СЫРЬЕВАЯ ФОРМОВОЧНАЯ СМЕСЬ

Сырьевая формовочная смесь, включающая каустический магнезит, отходы доменного производства, раствор бишофита плотностью 1,3 г/см3 и алюмосиликатную добавку, отличающаяся тем, что в качестве отходов доменного производства взяты молотый основной доменный гранулированный шлак и немолотые железосодержащие отходы доменного производства - колошниковая пыль или шлам газоочистки, а в качестве алюмосиликатной добавки взята муллито-кремнеземистая вата, при следующем соотношении компонентов, мас. %: Каустический магнезит - 25,2-27,0 Молотый основной доменный гранулированный шлак - 30,1-31,75 Немолотые железосодержащие отходы доменного производства (колошниковая пыль или шлам газоочистки) - 4,2-9,34 Раствор бишофита плотностью 1,3 г/см3 (в пересчете на безводный MgCl2) - 32,77-37,6 Муллито-кремнеземистая вата - 0,94-1,1 ...

Synthetic, refractory material for refractory products, and process for producing the product

hIGH-FIREPROOF MATERIAL

Procedure for the production of fireproof stones

PROCEDURE FOR THE PRODUCTION OF FIREPROOF MOLDED ARTICLES AS WELL AS FIREPROOF MOLDED ARTICLE

SYNTHETIC, FIREPROOF MATERIAL FOR FIREPROOF PRODUCTS AS WELL AS PROCEDURE FOR THE PRODUCTION OF THE PRODUCT

ALUMINA-MAGNESIA PRODUCT FOR GASIFIER OR FOR METALLURGICAL FURNACE

La présente invention concerne un produit réfractaire fondu et coulé présentant une composition chimique telle que, en pourcentages massiques sur la base des oxydes : AI2O3 : complément à 100%; - MgO : 26% à 45%; - ZrO2 0,5% à 10,0%; - B2O3 : < 1,5%; - SiO2 : = 0,5%; Na2O + K2O: = 0,3%; CaO : =1,0%; Fe2O3 + TiO2 : < 0,55%; autres espèces oxydes : < 1,0%; produit dans lequel le rapport massique élémentaire R de la teneur en Zirconium sur la teneur totale en Bore, en Fluor et en Silicium est compris entre 2 et 80.

СЫРЬЕВАЯ ФОРМОВОЧНАЯ СМЕСЬ

Изобретение относится к составам сырьевых формовочных смесей на основе магнезиального вяжущего и может найти применение в станкостроении при изготовлении деталей с металлическими корпусами типа борштанг, фрез и т.п., а также строительных изделий и конструкций, имеющих металлический корпус, во внутреннюю полость которых можно залить предлагаемую сырьевую формовочную смесь в виде литого раствора. Сырьевая формовочная смесь включает следующие компоненты, мас. %: каустический магнезит 25,2 - 27,0; молотый основной доменный гранулированный шлак 30,1 - 31,75; немолотые железосодержание отходы доменного производства (колошниковая пыль или шлам газоочистки) 4,2 - 9,34; раствор бишофита плотностью 1,3 г/см3 (в пересчете на безводный MgCl2) 32,77 - 37,6; муллито-кремнеземистая вата 0,94-1,1. При этом увеличивается прочность изделий при изгибе, а также смеси с поверхностью стали с сохранением прочности при сжатии и безусадочного эффекта при твердении. 1 ил., 2 табл.

Verfahren zur Herstellung eines basischen feuerfesten Stoffes

VERFAHREN ZUR BEHANDLUNG VON EINER AUS CHROM-MAGNESIUMOXID-SCHMELZE GEGOSSENEN, FEUERFESTEN STEINEN

CERAMIC MATERIAL, PROCEDURE, USE AND LAYER

IMPROVED REFRACTORY BRICK FOR STEEL LADLES

A magnesia-carbon brick comprised of about 50 to about 95% by weight magnesia and about 1 to about 20% by weight carbon, with or without metallic additions, such that the chemical analysis of the mixture of aggregates used in the brick will comprise, by chemical analysis, about 2 to about 15% SiO2, about 3 to about 50% Al2O3, and about 50 to about 95% MgO.

Molten and run refractory parts with very high content magnesia

hIGH-FIREPROOF MATERIAL

PRODUIT REFRACTAIRE FONDU DU TYPE SPINELLE

A.PRODUIT REFRACTAIRE FONDU DU TYPE SPINELLE. B.IL COMPREND UNE STRUCTURE CRISTALLINE CONSISTANT ESSENTIELLEMENT EN PLUS DE 50 EN POIDS D'UNE PHASE SPINELLE COMPOSITE EN UNE PHASE PERICLASE ET EN UNE PETITE QUANTITE D'UNE PHASE MATRICE DE VERRE ET IL CONTIENT ESSENTIELLEMENT LES CONSTITUANTS SUIVANTS, ANALYTIQUEMENT SUR UNE BASE EN POIDS: UN RAPPORT DE CRO A ALO DE 3,5 A 5,5; ET 20 A 40 DE MGO; 1,5 OU MOINS DE CAO; 15 OU MOINS DE FEO ET 5 OU MOINS DE SIO. C.UTILISATION DANS LES FOURS ELECTRIQUES, DE FUSION DES METAUX NON FERREUX, ETC.

Procedure for the production of a basic refractory material

MORE RESISTORKÖRNER FOR FIREPROOF MOLDED ARTICLES AND PROCEDURES FOR YOUR PRODUCTION

FUSED MAGNESIA, A BATCH COMPRISING FUSED MAGNESIA, A REFRACTORY CERAMIC PRODUCT COMPRISING FUSED MAGNESIA, AND A METHOD FOR PRODUCING FUSED MAGNESIA

The invention relates to fused magnesia, a batch comprising fused magnesia, a refractory ceramic product comprising said fused magnesia, and a method for producing fused magnesia.

A brush seal element

The production of low-loss, tunable composite ceramic materials with improved breakdown strengths is disclosed. The composite materials comprise ferroelectric perovskites such as barium strontium titanate or other ferroelectric perovskites combined with other phases such as low-loss silicate materials and/or other low-loss oxides. The composite materials are produced in sheet or tape form by methods such as tape casting. The composite tapes exhibit favorable tunability, low loss and tailorable dielectric properties, and can be used in various microwave devices.

REFRACTORY PRODUCTS CAST ONE BY ONE AND PROCESS FOR MAKING THE SAME

IMPROVED REFRACTORY BRICK FOR STEEL LADLES

A magnesia-carbon brick comprised of about 50 to about 95% by weight magnesia and about 1 to about 20% by weight carbon, with or without metallic additions, such that the chemical analysis of the mixture of aggregates used in the brick will comprise, by chemical analysis, about 2 to about 15% SiO2, about 3 to about 50% Al2O3, and about 50 to about 95% MgO.

Method for preparing magnesium-containing aluminum-zirconium spinel electrofusion magnesium sand by using electric arc furnace

Preparation method and device of magnesium-iron-aluminum composite refractory material

The invention relates to the field of refractory materials, in particular to a preparation method and device of a magnesium-iron-aluminum composite refractory material. After mixing, adding the mixture into high-temperature smelting equipment to be in a molten state; the raw materials in the molten state flow into a mold to be formed, and a blank is obtained; after the green body is dried, the green body is subjected to heat preservation for 3-7 hours at the temperature of 1200-1800 DEG C in a high-temperature kiln, and then the green body is taken out after being naturally cooled. The preparation method comprises the following steps: obtaining corresponding raw materials, mixing the raw materials according to a ratio, adding the mixed raw materials into smelting equipment, preparing the raw materials into a molten state under a high-temperature condition, conveniently pouring the raw materials into a mold for molding to obtain a blank body with a desired shape, and sintering the blank ...

CERAMIC MATERIAL, PRODUCTION, USAGE AND A LAYER OF THE SAME

The invention relates to a ceramic material (1) which is suitable for coating a body (9) using a thermal spraying method and which has a thermal longitudinal expansion coefficient that can be adapted to that of a metal. The ceramic material (1) contains between 10 and 95 wt. % MgAl2O4, between 5 and 90 wt. % MgO, up to 20 wt. % Al2O3 and a residue of conventional impurities. The material has grains (3) of MgO which are embedded in a MgAl2O4matrix (2).

Alumina-magnesia material for a gasifier

A molten and cast refractory material having a chemical composition, in weight percent on the basis of oxides, of: -Al2O3: the remainder up to 100%; -MgO: 28% to 50%; -CuO: 0.05% to 1.0%; -B2O3: @1.0%; -SiO2: <0.5%; -Na2O+K2O: <0.3%; -CaO: <1.0%; -Fe2O3+TiO2: <0.55%; -and other oxide species: <0.5%.

MELT MAGNESIA, BATCH COMPRISING THE MELT MAGNESIA, REFRACTORY CERAMIC PRODUCT COMPRISING THE MELT MAGNESIA AND A METHOD FOR THE PREPARATION OF MELT MAGNESIA

Die Erfindung betrifft eine Schmelzmagnesia, ein diese Schmelzmagnesia umfassender Versatz, ein diese Schmelzmagnesia umfassendes feuerfestes keramisches Erzeugnis sowie ein Verfahren zur Herstellung von Schmelzmagnesia.

SYNTHETIC, REFRACTORY MATERIAL FOR REFRACTORY PRODUCTS, AND PROCESS FOR PRODUCING THE PRODUCT

The invention relates to a material for refractory shaped bodies or compounds, wherein the material is a pleonaste and/or a spinel of the pleonaste type which, in addition to FeO x and Al2O3, also includes MgO, the ratio of the iron, calculated as Fe2O3:Al2O3 ranging from 30:70 to 60:40, and the material containing from 20 to 60% by mass of MgO, based on Fe2O3 + Al2O3.

Fused magnesia and preparation process thereof

GASEOUS TREATMENT OF FUSED CAST BASIC REFRACTORY TO PREVENT HYDRATION

METHOD AND DEVICE FOR REDUCING SHRINKAGE DURING SOLIDIFICATION OF METALS, ALLOYS, CERAMICS AND OTHER REFRACTORY [...] FUSED

FUSED GRAINS OF MAGNESIUM ALUMINATE MAGNESIUM RICH.

REFRACTORY PRODUCTS CAST ONE BY ONE AND PROCESS FOR MAKING THE SAME

Method for the preparation of a basic refractory substance

Refractory block casting process

Casting of high temp. refractory blocks for furnace linings etc. is effected through a funnel on top of a water cooled collapsible metal mould. The melt has a compn. which gives off gases during solidification. During the casting operation a fixed proportion of broken up solid refractory of the same compn. as the melt is introduced into the casting jet and mixed with the melt. The addition of the solid is carried out as long as the mould proper is being filled up. The cast block is removed from the mould whilst still hot, when only the surface has solidified and subjected to a controlled rate cooling cycle outside the mould. The process is intended particularly for MgO refractory pieces containing some Cr2O3. Both the gas formation on solidification and addition of solid material even out the cooling of the block after casting and prevent the formation of a central pipe type core hole.

REFRACTORY PRODUCT MELTED OF THE SPINEL TYPE

TREATMENT OF FUSED CAST BASIC REFRACTORY

... 1,212,799. Fused-cast chrome-magnesia. CORHART REFRACTORIES CO. 23 May, 1968 [31 May, 1967], No. 24591/68. Heading ClJ. The hydration resistance and strength of fused-cast basic refractory shapes are increased by exposure to gaseous carbon dioxide at 100- 815 psia. for 1-20 hours. The shapes can be sawed from a billet comprising by weight 56% MgO, 20% Cr 2 O 3 , 10.9% FeO, 8% Al 2 0 3 , 2.25% SiO 2 , 1.5% TiO 2 , 0.45% CaO and 0-3% fluorine.

SYNTHETIC, REFRACTORY MATERIAL FOR REFRACTORY PRODUCTS, AND PROCESS FOR PRODUCING THE PRODUCT

The invention relates to a material for refractory shaped bodies or compounds, wherein the material is a pleonaste and/or a spinel of the pleonaste type which, in addition to FeO x and Al2O3, also includes MgO, the ratio of the iron, calculated as Fe2O3:Al2O3 ranging from 30:70 to 60:40, and the material containing from 20 to 60% by mass of MgO, based on Fe2O3 + Al2O3.

Binding agent powder for magnesian castable and preparation method thereof

FUSED GRAINS OF MAGNESIUM ALUMINATE RICH IN MAGNESIUM.

ALUMINA-MAGNESIA PRODUCT FOR GASIFIER OR FOR METALLURGICAL FURNACE

The invention relates to a melted and cast refractory product having a chemical composition such that, in mass percentages on the basis of the oxides: AI2O3 : complement up to 100%; MgO : 26% to 45%; ZrO2 : 0.5% to 10.0%; B2O3 : < 1.5%; SiO2 : ≤ 0.5%; Na2O + K2O: ≤ 0.3%; CaO : ≤1.0%; Fe2O3 + TiO2 : < 0.55%; other oxide species : < 1,0%. In said product, the elementary mass ratio R of the zirconium content to the total boron, fluorine and silicon content is between 2 and 80.

Synthetisches, feuerfestes Material für feuerfeste Produkte sowie Verfahren zur Herstellung des Produkts

Die Erfindung betrifft ein Material für feuerfeste Formkörper oder Massen, wobei das Material ein Pleonast und/oder ein Spinell vom Pleonasttyp ist, der neben FeO¶x¶ und Al¶2¶O¶3¶ MgO aufweist, wobei das Verhältnis des Eisens gerechnet als Fe¶2¶O¶3¶ zu Al¶2¶O¶3¶ von 30 : 70 bis 60 : 40 reicht und 20 bis 60 M-% MgO, bezogen auf Fe¶2¶O¶3¶ + Al¶2¶O¶3¶, enthalten sind.

Electric melting magnesium-aluminum-chromium synthesis material and production method thereof

The invention relates to an electric melting magnesium-aluminum-chromium synthesis material and a production method thereof, wherein the electric melting magnesium-aluminum-chromium synthesis material comprises, by mass, 25-58% of Al2O3, 3-9% of Cr2O3, 29-65% of MgO and less than or equal to 4% of impurities. The steps comprise: taking chromium residue and light-burned magnesia as raw materials, carrying out crushing and mixing, adding to an electric arc furnace, carrying out electrifying heating to make the mixed material melt, cooling, solidifying into blocks, carrying out breaking sorting, removing the slag skull material, and carrying out sorting and magnetic separation to obtain the electric melting magnesium-aluminum-chromium synthesis material. According to the present invention, the process is simple, and Na2O and other impurities in the chromium residue can be effectively removed through electric melting, such that the product provides high erosion resistance for the molten slag ...

Method and device for reducing the contraction (shrink) cavity during solidification of electromelted metals, alloys, refractories and other ceramics obtained by melting

Method of manufacturing fireproof moulds and fireproof moulds

Die Erfindung betrifft einen feuerfesten, bei Sintertemperaturen über 1000°C, insbesondere bei Sintertemperaturen von 1700 bis 1750°C gebrannten Formkörper, der als eine feuerfeste Hauptkomponente aus einer erstarrten Schmelze zerkleinerte und fraktionierte Resistorkörnern aus Schmelzmagnesia aufweist, wobei die Resistorkörner hergestellt sind durch die folgenden Verfahrensschritte: - gemeinsames Schmelzen einer Mischung aus einer feuerfesten metalloxidischen MgO-Hauptkomponente oder einem üblichen Ausgangsstoff der Hauptkomponente und aus einem Spinell der Formel A2+B3+2O4 aus den Elementen A2+ = Fe, Mg und B3+ = Al bildenden Oxiden oder einem üblichen Ausgangsstoff der Oxide, wobei die Mischung den Spinellbildner in einer Menge dosiert zugesetzt enthält, dass seine Löslichkeit in der Schmelze überschritten wird und beim Abkühlen der Schmelze Entmischungsfelder von elastifizierenden Spinellen der genannten Formel A2+B3+2O4 punktförmig und relativ gleichmäßig verteilt in den Resistorkörnern ...

一种连续二步法生产电熔镁砂的方法

... 电熔镁砂连续二步法生产技术，将以菱镁矿石为原料用电弧炉熔炼生产电熔镁砂工艺中的分解熔炼分为二步进行。先将矿石破成8～12公分的块，并投入反射竖窑中在900～1100℃焙烧，以矿石烧透不碎为度。出窑物料温度为800～900℃，将其立即投入电弧炉中进行熔炼。电耗仅为2000～2200千瓦时/吨产品，周期短；7.5小时，成本低。 ...

PROCEDE ET DISPOSITIF POUR LA REDUCTION DE LA RETASSURE LORS DE LA SOLIDIFICATION DES METAUX, ALLIAGES, REFRACTAIRES ELECTROFONDUS ET AUTRES CERAMIQUES OBTENUES PAR FUSION

L'INVENTION CONCERNE UN PROCEDE ET UN DISPOSITIF PERMETTANT DE REDUIRE LA RETASSURE LORS DE LA SOLIDIFICATION DES METAUX ET DES REFRACTAIRES ELECTROFONDUS. POUR CELA, ON PROVOQUE, PAR UNE INJECTION DE GAZ INERTE FAITE AU MOYEN DE TUBES 1 TRAVERSANT LES PAROIS OU LE FOND DU MOULE 2, UNE VIVE AGITATION DU LIQUIDE AFIN D'OBTENIR COMME CONSEQUENCE DE SON REFROIDISSEMENT L'APPARITION DE NOMBREUX CRISTAUX. SIMULTANEMENT, ON RALENTIT LA SOLIDIFICATION A PARTIR DES PAROIS DU MOULE EN LIMITANT, SI POSSIBLE EN LES CALORIFUGEANT, LES DEPERDITIONS CALORIFIQUES PAR LESDITES PAROIS. LE TRAITEMENT EST POURSUIVI JUSQU'A CE QUE L'ON AIT UN MELANGE DE LIQUIDE ET DE CRISTAUX AUSSI RICHE QUE POSSIBLE EN CRISTAUX. A L'ARRET DU TRAITEMENT, IL N'Y A QUE PEU DE RETRAIT, D'OU UNE RETASSURE FAIBLE OU NULLE ET SITUEE A L'EXTREME TETE DU BLOC SOLIDIFIE. AU COURS DU TRAITEMENT, ON PEUT AJOUTER DES PARTICULES SOLIDES AFIN D'ACCELERER LA CRISTALLISATION.

Refractory block casting process

BACKFILL FOR PRODUCING A BASIC HEAVY-CLAY REFRACTORY PRODUCT, SUCH A PRODUCT AND METHOD FOR PRODUCING SAME, LINING OF AN INDUSTRIAL FURNACE, AND INDUSTRIAL FURNACE

A dry backfill for producing a basic molded heavy-clay refractory product, to such a product and a method for producing the same, to a lining of an industrial furnace, and to an industrial furnace.

MOULDED REFRACTORY BODIES AND THEIR PRODUCTION

... 1325467 Casting refractory oxides L'ELECTRO-REFRACTAIRE 9 Oct 1970 [10 Oct 1969 28 May 1970] 48179/70 Heading B5A Refractory mouldings are formed by pouring into a cooled metal mould, a molten refractory oxide charge containing at least one gas generating substance, and solid fragments of a refractory oxide, preferably of the same composition, are introduced into the material poured into the mould as it is filled so as to distribute the fragments uniformly in the cast material, and the superficially solidified casting is removed to complete the cooling outside the mould, the mould being opened after a time long enough to avoid distortion but short enough to avoid cracking of the body. The oxides may be magnesia and chromite, the product thus containing magnesium oxide, chromium sesquioxide, silica, calcium oxide, ferrous oxide and alumina. The chromite may be at least partly Turkish chromite which evolves gases at the pouring temperature. After removal of the pouring funnel, a heavy plane ...

HOT REPAIRING MATERIALS FOR DC FURNACE'S BOTTOM

PURPOSE: Hot repairing materials for repairing the bottoms of DC furnace's are provided, which has electric conductivity, good transportation and storage, short time application and strong adhesion. CONSTITUTION: The hot repairing materials contain 85-92wt.% of magnesia clinker, 8-15wt.% of power type pitch and phenol resin as carbon materials, and 1-3pts.wt.(based on 100pts.wt. of raw materials) of liquid phenol resin as a moisturizer for easy production and storage. The pitch powder has a softening temperature of 105-125deg.C and size of less than 1mm. © KIPO 2003 ...

Material für feuerfeste Formkörper oder Massen, feuerfestes Produkt hieraus sowie Verfahren zur Herstellung eines feuerfesten Produkts

Material für feuerfeste Formkörper oder Massen, dadurch gekennzeichnet, dass das Material ein Pleonast und/oder ein Spinell vom Pleonasttyp ist, das neben FeOx und Al2O3 MgO aufweist, wobei das Gewichtsverhältnis des Eisens gerechnet als Fe2O3 zu Al2O3 von 30 zu 70 bis 60 zu 40 reicht, und wobei 20 bis 60 Gew.-% MgO, bezogen auf das eingesetzte Material, enthalten sind.

Refractory products

A composition, forming a melt having a wide solidification range and which is superheated in an electric furnace above the complete melting temperature and then cast in a mould in which solidification results in a crystallization particularly resistant to corrosion and erosion in a basic medium, contains in per cent by weight magnesia at least 90; alumina 1 to 6; lime 2 to 7; silica proportioned that the CaO/SiO2 ratio is from 0.2 to 1.9: 1; iron 0-3 (calculated as Fe2O3) and less than 0.5 of minor impurities.

Synthetic, refractory material for refractory products, and process for producing the product

Ceramic material, method for the production thereof, use of the ceramic material, and a layer of the ceramic material on a metallic or ceramic body

Method of making high density, fusion cast basic metallurgical refractory and the refractory itself

A novel method of making a refractory material is disclosed comprising the steps of providing an electrical arc metal furnace, charging that furnace with a charge of refractory oxide, and selecting voltage, amperage and electrode spacings to create novel "hum and scum" melt conditions. This hum and scum condition is maintained until said charge is substantially melted. The described technique is particularly useful for melting magnesia chrome materials to produce fusion cast refractory products which are highly reduced and quite dense. The elaboration of this product requires higher energy input per pound concurrent with an increased consumption of reducing materials compared with standard preparation conditions. The resulting product exhibits higher oxidation weight gains, higher densities, lower porosities, high cold crush strengths, more thermal shock resistance, and better corrosion-erosion resistance than similar magnesia chrome refractory products fused using prior "arc and bark" ...

RAW MELT MATERIAL FOR THE MANUFACTURE OF A REFRACTORY PRODUCT, A METHOD FOR PRODUCING THE RAW MELT MATERIAL, AND USE OF THE RAW MELT MATERIAL

COMPOSITION FOR PREPARING A GREEN BODY FOR THE MANUFACTURE OF A REFRACTORY CARBON-BONDED PRODUCT, METHOD FOR PREPARING SUCH A GREEN BODY AND GREEN BODY PREPARED THEREBY

The invention relates to a composition for preparing a green body for the manufacture of a refractory carbon-bonded product, a method for preparing such a green body and a green body prepared by such a method. 1. A composition for preparing a green body for the manufacture of a refractory carbon-bonded product , comprising the following components:at least one refractory raw material,at least one carbon carrier, and a resin, and', 'at least one initiator which initiates a curing reaction of the resin through ionizing radiation., 'at least one binder which comprises2. The composition according to having a proportion of refractory base material in the range of 60 to 98% by mass.3. The composition according to in which the percentage of binder is in the range from 0.5 to 10% by mass.4. The composition according to having a binder consisting of an ionically curable resin and a cationic photoinitiator.5. The composition according to having an ionically curable resin in the form of an epoxy resin.6. The composition according to having a cationic photoinitiator in the form of an onium salt.7. The composition according to with a binder consisting of a radically curable resin and a free radical photoinitiator.8. The composition according to with a radically curable resin in the form of acrylate resin.9. The composition according to having a free radical photoinitiator selected from the group: benzophenone claim 1 , aromatic phosphine oxides claim 1 , phosphonates claim 1 , peroxides or azo-compounds.10. A method for preparing a green body for the manufacture of a refractory carbon-bonded product claim 1 , comprising the following steps:providing a composition, the composition comprising the following components: at least one carbon carrier, and', a resin, and', 'at least one initiator which initiates a curing reaction of the resin through ionizing radiation,, 'at least one binder which comprises'}], 'at least one refractory raw material,'}exposing the composition to such an ...

노재 및 노재의 제조 방법

... 본 발명은 내리튬 반응성이 우수하며, 또한, 경량의 노재(爐材)를 제공하는 것을 과제로 한다. MgO의 함유율이 33∼99.5 질량％, MgO와 Al2O3의 합계 함유율이 MgO+Al2O3=95∼99.9 질량％, MgO와 Al2O3의 함유 비율이, 각 질량％비로, Al2O3/MgO=0.003∼2.1, 숭비중이 1.0∼2.5로 한다.

Ceramic Powder and Manufacturing Method for the Same

Feuerfester Förmkörper, Versatz und Verfahren zu seiner Herstellung und Verwendung des Versatzes

Versatz, insbesondere zum Herstellen eines feuerfesten Formkörpers, dessen Komponenten im Dreistoffsystem MgO-Al2O3-SiO2 liegen, aufweisend zumindest a) eine relativ grobkörnige Resistorkornkomponente, deren Zusammensetzung im Bereich des Zusammensetzungsdreiecks Periklas (MgO) – Spinell (MgAl2O4) – Forsterit (Mg2SiO4) einschließlich der Konoden liegt, wobei die Resistorkornkomponente eine Kornverteilung von 10–90 Gew.-% > 0,3 mm aufweist; b) einen Schmelzphasenbildner, dessen Zusammensetzung im Dreistoffsystem MgO-Al2O3-SiO2, jedoch außerhalb des Zusammensetzungsdreiecks Periklas (MgO) – Spinell (MgAl2O4) – Forsterit (Mg2SiO4), liegt, wobei der Schmelzphasenbildner ein Kornband aufweist, bei dem 5-70 Gew.-% < 0,2 mm vorliegen; c) eine feinkörnige feuerfeste Komponente einer Zusammensetzung, die im Dreistoffsystem MgO-Al2O3-SiO2 liegt und unter Einsatzbedingungen im wesentlichen nicht mit der aus dem Schmelzphasenbildner gebildeten Schmelze reagiert, wobei die feinkörnige feuerfeste Komponente ...

Preparation method of magnesium erbium cerium fused refractory profile

HOCHFEUERFESTES MATERIAL

Continuous two-step process for preparing magnesium sand by electric smelting

A continuous two-step process for preparing electrosmelted magnesia includes such steps as crushing the magnesite ore into 8-12 cm blocks, calcining at 900-1100 dge.c in vertical reflecting furnace, discharging the calcined until ore fully burnt but not broken, ore leaving furnace at 800-900 deg.c, and then immediately smelting in electric arc furnace. Its advantages include low electricity consumption (2000-2200 kw/ton), short period (7.5hr) and low cost.

IMPROVED REFRACTORY BRICK FOR STEEL LADLES

A magnesia-carbon brick comprised of about 50 to about 95% by weight magnesia and about 1 to about 20% by weight carbon, with or without metallic additions, such that the chemical analysis of the mixture of aggregates used in the brick will comprise, by chemical analysis, about 2 to about 15% SiO2, about 3 to about 50% Al2O3, and about 50 to about 95% MgO.

Method for manufacturing disk-substrates for magnetic recording media, disk-substrates for magnetic recording media, method for manufacturing magnetic recording media, magnetic recording media, and magnetic recording device

A method for manufacturing a magnetic recording medium disk substrate is provided for achieving a magnetic disk having a suitable surface roughness, a high in-plane magnetic anisotropy and a high S/N. The manufacturing method has a texturing process wherein the magnetic recording medium disk substrate is rotated in the circumferential direction while a polishing tape is pressed against the rotating substrate. The polishing tape includes polyester fiber having a fiber diameter of 400 nm to 950 nm, on the surface coming into contact with the substrate. All the while, slurry including abrasive grains including a cluster diamond is supplied to the surfaces of the substrate. The present invention relates to a magnetic recording medium disk substrate produced by the manufacturing method; and a magnetic recording medium at least comprising a magnetic layer on the magnetic recording medium disk substrate and manufacturing method of the magnetic recording medium.

MELT RAW MATERIAL FOR PRODUCING A REFRACTORY PRODUCT, A METHOD FOR PRODUCING THE MELT RAW MATERIAL, AND USE OF THE MELT RAW MATERIAL

The invention relates to a melt raw material for producing a refractory product, to a method for producing the melt raw material, and to a use of the melt raw material.

PRODUCT ON THE BASIS OF ALUMINA-MAGNESIA FOR GASIFIER

FURNACE REFRACTORY MATERIAL WITH THE EXCELLENT IN LITHIUM REACTIVITY, AND A PRODUCING METHOD THEREOF

PURPOSE: A furnace refractory material with the excellent in lithium reactivity, and a producing method thereof are provided to prevent the generation of a bonding layer of glass materials for effectively controlling the damage on the furnace refractory material. CONSTITUTION: A furnace refractory material contains 95~99.9mass% of mixture including MgO and Al2O3. The specific gravity of the furnace refractory material is 1~2.5. the producing method of the furnace refractory material comprises a step of mixing all materials including a pore forming agent, and a step of plasticizing the mixture at 1,400~1,700deg C. The furnace refractory material uses periclase or spinel with the average particle diameter of 0.8~2mm as an aggregate material. COPYRIGHT KIPO 2011 ...

raw material melt producing a product resistant to fire, a process for the production of the rawmaterial melting, as well as the use of the feedstock melting

Synthethic refractory material for refractory products and process for manufacturing the product

Material for fire-resistant molding or composition comprises pleonaste and/or spinel of pleonaste type containing iron oxide and alumina-magnesia A material for a fire-resistant molding or composition is a pleonaste and/or a spinel of the pleonaste type containing FeOx and Al2O3MgO. The ratio of iron calculated as Fe2O3:Al2O3 is 30:70-60:40 at 20-60 wt.% MgO referring to Fe2O3 + Al2O3. An Independent claim is also included for the production of a fire-resistant product comprising comminution of the above material as a solidified melt or sinter product, classification into corresponding grain sizes, and mixing with a fire-resistant, mineral, metal oxide main component (resistor). Preferred Features: The material is a melted synthetic spinel made from magnesia, alumina, or iron compounds, especially iron oxide such as magnetite of the pleonaste type. The elastifier is a synthetic spinel of the pleonaste type sintered from magnesia, alumina and magnetite.

Synthetic refractory material for refractory product and its production method

High-temperature heat-insulation material and method for preparing same

UNSHAPED REFRACTORY FOR HOT-REFAIRING USING WASTE REFRACTORY AND METHOD FOR AMNUFACTURING THE SAME

Synthetic, refractory material for refractory products, and process for producing the product

The invention relates to a material for refractory shaped bodies or compounds, wherein the material is a pleonaste and/or a spinel of the pleonaste type which, in addition to FeOx and Al2O3, also includes MgO, the ratio of the iron, calculated as Fe2O3:Al2O3 ranging from 30:70 to 60:40, and the material containing from 20 to 60% by mass of MgO, based on Fe2O3+Al2O3.

KERAMISCHER WERKSTOFF, VERFAHREN, VERWENDUNG UND SCHICHT

철강 래들용 충진재의 제조 방법 및 이에 의해 제조된 철강 래들용 충진재

... 본 발명은 철강 래들용 충진재의 제조방법 및 이에 의해 제조된 철강 래들용 충진재에 관한 것으로, 상기 충진재의 제조방법에 의해 탄소계 물질을 샌드 표면에 균일하게 코팅시킬 수 있으며, 상기 제조방법에 의해 제조된 래들용 충진재는 용강 배출시에 소결 또는 융착, 용강의 침투가 없고, 높은 개공률을 나타낸다.

REFRACTORY COMPOSITION AND SLIDE GATE PLATE FOR STEEL CASTING BY USING SAME

The present invention relates to a refractory composition and to a slide gate plate for steel casting manufactured with the same. A slide gate plate having a refractory material formed by sintering, which contains multiple components, contains a main component forming a base composition, wherein the main component contains 43 wt% or more and 77 wt% or less of electrofused magnesia; 10 wt% or more and 40 wt% or less of CaO stabilized zirconia; and 5 wt% or more and 10 wt% or less of carbon. The slide gate plate having a refractory material is manufactured to obtain a refractory composition with improved corrosion resistance and spalling resistance, thereby increasing resistance to chemically molten iron as for special steel casting like Nb, Mn, and Cr-added high oxygen steel. Therefore, the costs and time for maintenance of refractory material of a slide gate plate. Also, delay of casting work caused by unnecessary repair is controlled to improve productivity. COPYRIGHT KIPO 2015 (AA) Magnesia ...

СПОСОБ ИЗГОТОВЛЕНИЯ ФУТЕРОВКИ ПЛАВИЛЬНОЙ ПЕЧИ

Способ изготовления футеровки плавильной печи включает выполнение кладки из огнеупорного кирпича и создание защитного слоя в зоне, подверженной наибольшему воздействию расплава. Для создания защитного слоя используют песок кварцевый (SiO2), порошок периклазовый (MgO), калий крем нефтористый (K2SiF6), глинозем (Аl2О3) при следующем соотношении компонентов, об. %: песок кварцевый - 30-35, порошок периклазовый - 25-30, калий кремне фтористый - 20-25, глинозем - 8-10 путем их смешения, полученную шихту плавят в электродуговой печи в три этапа, за 5 минут до окончания литья в печь вводят легирующую добавку - карбид бора, заливают литейные формы расплавом при температуре от 1380°С до 1480°С, охлаждают до температуры не менее 700°С, выдерживают от 2 до 5 минут и проводят термическую обработку в обжиговой печи при температуре 900°С не менее двух часов. Охлажденные отливки укладывают в зоне плавильной печи, подверженной наибольшему воздействию расплава, ниже и выше этой зоны осуществляют кладку ...

Novel anti-fire and heat-protectable panel for constructure comprising of foam glass

PROCESS FOR OBTAINING

Preparation process of low-sodium corundum

SPUTTERING TARGET FOR FORMING HIGH STRENGTH OPTICAL RECORDING MEDIUM PROTECTION FILM

HEAT-PROFF AND EROSION-PROFF GUNITE AND PROCESS FOR APPLYING

Method of making high density, fusion cast basic metallurgical refractory and the refractory itself

A novel method of making a refractory material is disclosed comprising the steps of providing an electrical arc metal furnace, charging that furnace with a charge of refractory oxide, and selecting voltage, amperage and electrode spacings to create novel "hum and scum" melt conditions. This hum and scum condition is maintained until said charge is substantially melted. The described technique is particularly useful for melting magnesia chrome materials to produce fusion cast refractory products which are highly reduced and quite dense. The elaboration of this product requires higher energy input per pound concurrent with an increased consumption of reducing materials compared with standard preparation conditions. The resulting product exhibits higher oxidation weight gains, higher densities, lower porosities, high cold crush strengths, more thermal shock resistance, and better corrosion-erosion resistance than similar magnesia chrome refractory products fused using prior "arc and bark" ...

Refractory grains for refractory articles and process of manufacture thereof

VERFAHREN ZUR HERSTELLUNG VON HOCHSCHMELZENDEN GUSSTUECKEN

INCOMBUSTIBLE AND ADIABATIC FOAM GLASS PANEL FOR BUILDING CAPABLE OF MINIMIZING THE OCCURRENCE OF TOXIC GASES UPON FIRING OF A BUILDING, AND A MANUFACTURING METHOD THEREOF

PURPOSE: An incombustible and adiabatic foam glass panel for building is provided to have good mechanical strength and excellent fire retardancy and be strong against thermal shock. CONSTITUTION: A method for manufacturing an incombustible and adiabatic foam glass panel for building includes the steps of: grinding waste glass coarsely; melting the coarsely ground glass in a furnace at 1200-1600 °C for 7-9 hours; cooling the molten glass in an ambient-temperature circulation cooling water tank; grinding the cooled glass finely; and mixing the fine glass powder with 0.5-10wt% of silicon carbide(SiC) to form the mixture into a panel in a molding machine at 500-1100 °C. © KIPO 2008 ...

RAPID FUSE CASTING REFRACTORY SHAPES IN LIQUID COOLED METAL MOLDS

Material for refractory former and composite, refratory product obtained form the material and preparation method of refractory product

Inorganic Fiber

Provided are inorganic fibers containing calcium and alumina as the major fiber components. According to certain embodiments, the inorganic fibers containing calcia and alumina are provided with a coating of a phosphorous containing compound on at least a portion of the fiber surfaces. Also provided are methods of preparing the coated and non-coated inorganic fibers and of thermally insulating articles using thermal insulation comprising the inorganic fibers. 1. A low shrinkage , high temperature resistant inorganic fiber having a use temperature of 1100° C. or greater , wherein at least 90 weight percent of said fiber consists essentially of a fiberization product of greater than 50 weight percent calcia , greater than 0 to less than 50 weight percent alumina , and about 10 weight percent or less silica.2. The inorganic fiber of claim 1 , wherein at least 90 weight percent of said fiber consists essentially of the fiberization product of greater than 50 to about 60 weight percent calcia and from about 40 to less than 50 weight percent alumina.3. The inorganic fiber of claim 1 , wherein at least 90 weight percent of said fiber consists essentially of the fiberization product of about greater than 50 to about 80 weight percent calcia and about 20 to less than 50 weight percent alumina.4. The inorganic fiber of claim 1 , wherein at least 90 weight percent of said fiber consists essentially of the fiberization product of about 60 to about 80 weight percent calcia and about 20 to about 40 weight percent alumina.5. The inorganic fiber of claim 1 , wherein at least 90 weight percent of said fiber consists essentially of the fiberization product of greater than 50 to about 70 weight percent calcia and about 30 to less than 50 weight percent alumina.6. The inorganic fiber of claim 1 , containing about 5 weight percent or less silica.7. The inorganic fiber of claim 1 , containing about 2 weight percent or less silica.8. The inorganic fiber of claim 1 , containing ...

MAGNESIUM OXIDE SPUTTERING TARGET AND METHOD OF MAKING SAME

A sintered compact magnesium oxide target for sputtering having a purity of 99.99 wt % or higher, a density of 3.58 g/cmor higher, and a transparency 10% or more. A sintered compact magnesium oxide target for sputtering having a purity of 99.99 wt % or higher, a density of 3.58 g/cmor higher, and an average crystal grain size of 50 μm or more. 1. A sintered compact magnesium oxide target for sputtering comprising:a purity of 99.99 wt % or higher;{'sup': '3', 'a density of 3.58 g/cmor higher; and'}a transparency 10% or more.2. The sintered compact magnesium oxide target for sputtering as in claim 1 , wherein the sintered compact magnesium oxide target for sputtering further includes raw material of pure MgO powder claim 1 , wherein said MgO powder includes a particle size of less than 10m and specific surface area of less than 15 10m/kg.3. The sintered compact magnesium oxide target for sputtering as in claim 1 , wherein the transparence is 10% or higher.4. The sintered compact magnesium oxide target for sputtering as in claim 1 , wherein variation in the transparence is within 1%.5. A sintered compact magnesium oxide target for sputtering comprising:a purity of 99.99 wt % or higher;{'sup': '3', 'a density of 3.58 g/cmor higher; and'}an average crystal grain size of 50 μm or more.6. The sintered compact magnesium oxide target for sputtering according to claim 5 , wherein said sintered compact magnesium oxide target further includes raw material of pure MgO powder claim 5 , wherein said MgO power includes a particle size of less than 10m and a specific surface area less than 15 10m/kg.7. The sintered compact magnesium oxide target for sputtering according to claim 5 , wherein the transparence is 10% or higher.8. The sintered compact magnesium oxide target for sputtering according to claim 5 , wherein the variation in the transparence is within 1%.9. A method for producing a sintered compact magnesium oxide target for sputtering claim 5 , the method comprising: ...

REFRACTORIES AND USE THEREOF

A refractory has the form of a dry, mineral batch of fire-resistant mineral materials combined in such a way that refractories which are long-term resistant to fayalite-containing slags, sulfidic melts (mattes), sulfates and non-ferrous metal melts and are used for refractory linings in industrial non-ferrous metal melting furnaces can be manufactured. The refractory at least contains:—at least one coarse-grained magnesia raw material as the main component;—magnesia (MgO) meal;—at least one fire-resistant reagent which, during the melting process, acts (in situ) in a reducing manner on non-ferrous metal oxide melts and/or non-ferrous metal iron oxide melts and converts same into non-ferrous metal melts. 1. Refractory product in the form of a dry , mineral batch of refractory mineral materials , composed , in terms of materials , in such a manner that refractory products for fire-side lining of industrial non-ferrous metal smelting furnaces that are resistant to fayalite slags , sulfidic melts (mattes) , sulfates , and non-ferrous metal melts , over the long term , can be produced from them , and having:at least one coarse-grained magnesia raw material as the main component,magnesia meal (MgO meal),at least one refractory reagent that acts to reduce non-ferrous metal oxide melts and/or non-ferrous metal iron oxide melts during the smelting process (in situ) and to convert them to non-ferrous metal melts.2. Product according to claim 1 , whereinthe reagent is fine-grained carbon, particularly graphite and/or carbon black and/or anthracite and/or coke, but preferably graphite.3. Product according to claim 1 ,comprising the following dry substance compositions:30 to 74, particularly 40 to 60 wt.-% coarse-grained magnesia, particularly with more than 90, particularly more than 95 wt.-% MgO,25 to 50, particularly 35 to 45 wt.-% magnesia meal, particularly with >90, particularly >95 wt.-% MgO,1 to 20, particularly 5 to 15 wt.-% reagent.4. Product according to claim 1 , ...

LOW ABSORPTION SPINEL FORMED BY ACIDIC AND BASIC TREATMENTS

A method of purifying a spinel powder includes contacting a spinel powder with an acid solution to form an acid-washed spinel composition and contacting the acid-washed spinel composition with a basic solution to form a purified composition. The purified powder is suited to formation of low-absorption shaped bodies, such as windows for high intensity laser devices. 1. A method of purifying a spinel powder , the method comprising:a) contacting a spinel powder with an acid solution to form an acid-washed spinel composition; andb) contacting the acid-washed spinel composition with a basic solution to form a purified composition.2. The method of claim 1 , wherein the contacting of the powder with an acid solution to form an acid-washed composition further comprises removing residual acid by at least one of:i) centrifuging the acid-washed spinel composition; andii) washing the acid-washed spinel composition with water.3. The method of claim 1 , wherein the acid solution has a pH of less than 6.4. The method of claim 1 , wherein the contacting with the acid solution comprises contacting at a temperature in a range of from 15° C. to a boiling point of the acid solution.5. The method of claim 1 , wherein the acid solution comprises at least one of nitric acid claim 1 , sulfuric acid claim 1 , hydrochloric acid claim 1 , and acetic acid.6. The method of claim 1 , wherein the acid solution comprises at least 0.001M acid.7. The method of claim 1 , wherein the contacting with the basic solution comprises:i) contacting the acid-washed composition with the base solution to form a base-washed spinel composition;ii) centrifuging the base-washed spinel composition; andiii) repeating steps i) and ii) until the base-washed spinel composition has a pH within a selected range.8. The method of claim 7 , wherein the selected pH range is from 7.0 to 8.5.9. The method of claim 1 , wherein the basic solution has a pH of at least 7.2.10. The method of claim 1 , wherein the basic solution ...

Melted magnesium aluminate grain rich in magnesium

A fused grain is essentially composed of a matrix of a magnesium aluminum oxide of MgAl2O4 spinel structure and/or of the MgO—MgAl2O4 eutectic structure, and of inclusions essentially composed of magnesium oxide. The grain has the following overall chemical composition, as percentages by weight, expressed in the form of oxides: more than 5.0% and less than 19.9% of Al2O3, Al2O3 and MgO together represent more than 95.0% of the weight of the grain. The cumulative content of CaO and of ZrO2 is less than 4000 ppm, by weight.

THERMOSET CERAMIC COMPOSITIONS, INORGANIC POLYMER COATINGS, INORGANIC POLYMER MOLD TOOLING, INORGANIC POLYMER HYDRAULIC FRACKING PROPPANTS, METHODS OF PREPARATION AND APPLICATIONS THERFORE

Thermoset ceramic compositions and a method of preparation of such compositions. The compositions are advanced organic/inorganic hybrid composite polymer ceramic alloys. The material combine strength, hardness and high temperature performance of technical ceramics with the strength, ductility, thermal shock resistance, density, and easy processing of the polymer. Consisting of a branched backbone of silicon, alumina, and carbon, the material undergoes sintering at 7 to 300 centigrade for 2 to 94 hours from water at a pH between 0 to 14, humidity of 0 to 100%, with or without vaporous solvents. 1. A composition of matter comprising:a polymer of aluminum, silicon, carbon, and oxygen wherein the aluminum, silicon, carbon, and oxygen are all in the polymer chain backbone.2. A composition of matter provided by the incipient materials:a. aluminum oxide,b. silicon oxide,c. carbon, and, a source ofd. divalent cations.3. A composition of matter as claimed in wherein the composition of matter is a gel.4. The composition as claimed in wherein the divalent cations are selected from the group consisting of calcium claim 2 , and magnesium.5. A composition of matter as claimed in wherein claim 2 , in addition claim 2 , metal claim 2 , is added.6. A composition of matter as claimed in wherein claim 2 , in addition claim 2 , fibers are added.7. A composition of matter as claimed in wherein claim 2 , in addition claim 2 , other metallic oxides are added.8. A method of preparation of a composition of claim 1 , said method comprising:a. providing a mixture of aluminum oxide and silicon oxide; i. water,', {'sup': '−', 'ii. a source of OH,'}, 'iii. carbon, and,', 'iv. a source of divalent cations;, 'b. providing a mixture, having a basic pH, in a slurry form, of'}c. mixing A. and B. together using shear force to form a stiff gel;d. exposing the product of C, to a temperature in the range of 140° F. to 250° F. for a period of time to provide a thermoset ceramic.9. The method as claimed in ...

JOINED BODY AND SURFACE ACOUSTIC WAVE DEVICE

Provided is a joined body including a piezoelectric substrate and a polycrystalline spinel substrate provided on one main surface of the piezoelectric substrate, wherein the polycrystalline spinel substrate has a porosity of 0.005% or more and 0.6% or less. 1. A joined body comprising:a piezoelectric substrate; anda polycrystalline spinel substrate provided on one main surface of the piezoelectric substrate, whereinthe polycrystalline spinel substrate has a porosity of 0.005% or more and 0.6% or less.2. The joined body according to claim 1 , whereinthe polycrystalline spinel substrate includes a plurality of crystal grains, andthe crystal grains have an average grain diameter of more than 1 μm and 60 μm or less.3. The joined body according to claim 2 , whereinthe polycrystalline spinel substrate includes the plurality of crystal grains, andthe crystal grains have an average grain diameter of 5 μm or more and 30 μm or less.4. The joined body according to claim 1 , wherein the piezoelectric substrate is made of lithium tantalate or lithium niobate.5. A surface acoustic wave device comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the joined body according to ; and'}an electrode provided on a main surface of the piezoelectric substrate opposite to the main surface provided with the polycrystalline spinel substrate. The present disclosure relates to a joined body and a surface acoustic wave device.Inside a mobile phone, an electronic component called a surface acoustic wave (SAW) filter for cutting the noise of electrical signals and transmitting/receiving only an electrical signal having a desired frequency is embedded. For the SAW filter, a piezoelectric substrate made of a material having a piezoelectric effect is used.On one surface of the piezoelectric substrate, a comb-shaped electrode having a pitch according to the wavelength of a transmission frequency band is formed. Due to an electrical signal inputted to the comb-shaped electrode, the ...

PHASE GRADIENT NANOCOMPOSITE WINDOW FABRICATION AND METHOD OF FABRICATING DURABLE OPTICAL WINDOWS

A unitary radome layer assembly is provided and includes a first nanocomposite formulation and a second nanocomposite formulation. The first and second nanocomposite formulations are provided together in a unitary radome layer with respective distribution gradients. 1. A unitary radome layer assembly method , comprising:designing a unitary radome layer with first and second portions, the first portions being more durable than the second portions and the second portions being more optically transparent than the first portions;providing first and second nanocomposite formulations together in a unitary radome layer mold, the second nanocomposite formulation having a hardener and a higher effective density than the first nanocomposite formulation; andgenerating respective distribution gradients for the first and second nanocomposite formulations prior to curing.2. The unitary radome layer assembly method according to claim 1 , wherein the generating of the respective distribution gradients comprises:defining the respective distribution gradients relative to a unitary radome layer axis;placing the unitary radome layer mold with the first and second nanocomposite formulations in a centrifuge; andactivating the centrifuge to rotate the unitary radome layer mold with the first and second nanocomposite formulations about the unitary radome layer axis.3. The unitary radome layer assembly method according to claim 1 , wherein the generating of the respective distribution gradients comprises:defining the respective distribution gradients relative to multiple unitary radome layer axes;placing the unitary radome layer mold with the first and second nanocomposite formulations in a centrifuge; andactivating the centrifuge to rotate the unitary radome layer mold with the first and second nanocomposite formulations about the multiple unitary radome layer axes.4. The unitary radome layer assembly method according to claim 1 , wherein the designing comprises designing the unitary ...

ELABORATION OF AN ADVANCED CERAMIC MADE OF RECYCLED INDUSTRIAL STEEL WASTE

A ceramic and a method of forming a ceramic including milling steel slag exhibiting a diameter of 5 mm of less to form powder, sieving the powder to retain the powder having a particle size in the range of 20 to 400 removing free iron from the powder with a magnet, heat treating the powder at a temperature in the range of 700° C. to 1200° C. for a time period in the range of 1 hour to 10 hours and oxidizing retained iron in the powder, compacting the powder at a compression pressure in the range of 20 MPa to 300 MPA, and sintering the powder at a temperature in the range of 700° C. to 1400° C. for a time period in the range of 0.5 hours to 4 hours to provide a ceramic. 1. A method of forming a ceramic from steel slag , comprising:milling steel slag exhibiting a diameter of 5 mm of less to form powder;sieving said powder to retain said powder having a particle size in the range of 20 μm to 400 μm;removing free iron from said powder with a magnet;heat treating said powder at a temperature in the range of 700° C. to 1200° C. for a time period in the range of 1 hour to 10 hours and oxidizing retained iron in said powder;compacting said powder at a compression pressure in the range of 20 MPa to 300 MPa; andsintering said powder at a temperature in the range of 700° C. to 1400° C. for a time period in the range of 0.5 hours to 4 hours to provide a ceramic.2. The method of claim 1 , further comprising preheating said powder prior to sintering wherein said green compact is preheated at a rate of 1 K/min to 10 K/min.3. The method of claim 1 , wherein said sintering is performed after compacting claim 1 , wherein said compression pressure is in the range of 30 MPa to 300 MPa claim 1 , and said sintering temperature is in the range of 800° C. to 1100° C.4. The method of claim 3 , wherein said compression pressure in the range of 120 MPa to 180 MPa.5. The method of claim 1 , wherein sintering is performed concurrently with said compacting.6. The method of claim 5 , wherein said ...

INORGANIC PHOSPHATE COMPOSITIONS AND METHODS

Disclosed and described are multi-component inorganic phosphate formulations of acidic phosphate components and basic oxide/hydroxide components. Also disclosed are high solids, atomizable compositions of same, suitable for spray coating. 1. An atomizable phosphate ceramic spray system comprising{'sup': 'm', 'sub': 2', '4', 'm', '2, 'a first component cartridge comprising an aqueous solution of an acid-phosphate of chemical formula A(HPO).nHO, where A is hydrogen ion, ammonium cation, metal cation, or mixtures thereof; where m=1-3, and n=0-6; the first component solution adjusted to a pH of about 2 to about 5;'}{'sup': '2m', 'sub': m', '2m, 'a second component cartridge comprising an aqueous solution of an alkaline oxide or alkaline hydroxide represented by BO, B(OH), or mixtures thereof, where B is an element of valency 2m (m=1, 1.5, or 2) the second component solution adjusted to a pH of between 9-14; and'}optionally, a rheology modifier/suspending agent in an amount capable of providing shear thinning of either the first component or the second component and further capable of suspending a high solids content of either the first component or the second component for atomization; andhigh shear dispersion blade; anda plural sprayer operably connected to a pump.2. The phosphate ceramic spray system of claim 1 , wherein the second component is at least one of magnesium hydroxide and calcium hydroxide claim 1 , and water.3. The phosphate ceramic spray system of claim 1 , wherein the first component comprises about 2 to about 10 wt % phosphoric acid claim 1 , water claim 1 , and at least one of mono potassium phosphate and mono calcium phosphate.4. The phosphate ceramic spray system of claim 1 , further comprising aluminum oxide present in an amount sufficient to increase the hardness of the phosphate ceramic.5. The phosphate ceramic spray system of claim 1 , wherein the rheology modifier/suspending agent is at least one of guar gum claim 1 , diutan gum claim 1 , welan ...

Transparent Nanocomposite Ceramics Built From Core/Shell Nanoparticles

A method for making transparent nanocomposite ceramics and other solid bulk materials from nanoparticle powders and transparent nanocomposite ceramics and other solid bulk materials formed using that method. A nanoparticle powder is placed into a reaction chamber and is treated to produce a clean surface powder. The clean surface powder is coated with a second material by means of p-ALD to produce core/shell or core multi shell nanoparticles having a coating or coatings of a other material surrounding the nanoparticle. The core/shell nanoparticles are cleaned and formed into green compact which is sintered to produce a transparent nanocomposite ceramic or other solid bulk material consisting of nanoparticles or core/shell nanoparticles uniformly embedded in a matrix of a different material, particularly in a matrix of a different ceramic material, formed by outer shell of initial core/shell. All steps are performed without exposing the material to the ambient. 1. A process for making a transparent nanocomposite solid bulk material , the process including:providing a powder comprising a plurality of nanoparticles of at least one material;placing the powder inside an enclosure having a controlled gas atmosphere;{'sub': c1', 'c1, 'without exposing the powder to an ambient air, subjecting the powder to a first predetermined cleaning temperature Tfor a first predetermined cleaning time tto clean the nanoparticles and provide nanoparticles having a pristine surface;'}without exposing the cleaned powder to the ambient atmosphere, transferring the powder to a powder Atomic Layer Deposition (p-ALD) reactor and coating the cleaned nanoparticles with one or more nanolayers of the same or different materials to form a plurality of core/shell or core/multi-shell nanocomposite particles;{'sub': s', 's', 's, 'without exposing the nanocomposite particles to the ambient atmosphere, subjecting the nanocomposite particles to a predetermined pressure P and a predetermined sintering ...

Phase gradient nanocomposite window fabrication and method of fabricating durable optical windows

An optical window is provided and includes a core layer, a cladding layer and an electromagnetic interference (EMI) layer interposed between the core and cladding layers.

DIELECTRIC COMPOSITION AND ELECTRONIC COMPONENT

A dielectric composition containing a complex oxide represented by the formula of ABCO as the main component, wherein A represents Ba, B represents at least one element selected from the group consisting of Ca and Sr, C represents at least one element selected from the group consisting of Ta and Nb, and α, β and γ meet the following conditions, i.e., α+β+γ=1.000, 0.000<α≦0.375, 0.625≦β<1.000, 0.000≦γ≦0.375. 1. A dielectric composition characterized in comprising a complex oxide represented by a formula of ABCO as main component , wherein ,A represents Ba,B represents at least one element selected from the group consisting of Ca and Sr,C represents at least one element selected from the group consisting of Ta and Nb, andα, β and γ meet the following conditions,α+β+γ=1.000,0.000<α≦0.375,0.625≦β<1.000,0.000≦γ≦0.375.2. The dielectric composition of characterized in comprising the complex oxide as the main component claim 1 , wherein claim 1 ,in the formula, α, β and γ meet the following conditions,α+β+γ=1.000,0.000<α≦0.375,0.625≦β<1.000,0.000<γ≦0.375.3. The dielectric composition of characterized in comprising the complex oxide as the main component claim 1 , wherein claim 1 ,in the formula, α, ↑ and γ meet the following conditions,α+β+γ=1.000,0.100≦α≦0.375,0.625≦β≦0.900,0.000<γ≦0.275.4. The dielectric composition of characterized in comprisingthe complex oxide as the main component, wherein,in the formula, α, β and γ meet the following conditions,α+β+γ=1.000,0.000≦α≦0.180,0.770≦β<1.000,0.000<γ≦0.050.5. The dielectric composition of characterized in comprising the complex oxide as the main component claim 1 , wherein claim 1 ,in the formula, α, β and γ meet the following conditions,α+β+γ=1.000,0.000<α≦0.215,0.770≦β<1.000,0.000<γ≦0.015.6. The dielectric composition of characterized in comprising the complex oxide as the main component claim 1 , wherein claim 1 ,in the formula, α, β and γ meet the following conditions,α+β+γ=1.000,0.100≦α≦0.180,0.805≦β≦0.900,0.000<γ≦0.015. ...

FUSED GRAINS OF MAGNESIUM-RICH MAGNESIUM ALUMINATE

A fused grain is essentially composed of a matrix of a magnesium aluminum oxide of spinel structure MgAlOand/or of the MgO—MgAlOeutectic, the matrix including inclusions essentially composed of magnesium oxide, the grain exhibiting the following overall chemical composition, as percentages by weight, expressed in the form of oxides: more than 20.0% and less than 50.0% of AlO, AlOand MgO together represent more than 95.0% of the weight of the grain, wherein the cumulative content of CaO and ZrOis less than 4000 ppm by weight. 1. A fused grain essentially composed of a matrix of a magnesium aluminum oxide of spinel structure MgAlOand/or of the MgO—MgAlOeutectic , said matrix comprising inclusions essentially composed of magnesium oxide , said grain exhibiting the following overall chemical composition , as percentages by weight , expressed in the form of oxides:{'sub': 2', '3, 'more than 20.0% and less than 50.0% of AlO,'}{'sub': 2', '3', '2, 'AlOand MgO together represent more than 95.0% of the weight of said grain, wherein a cumulative content of CaO and ZrOis less than 4000 ppm by weight.'}2. The fused grain as claimed in claim 1 , wherein the cumulative content of CaO and ZrOis less than 3000 ppm.3. The fused grain as claimed in claim 1 , wherein the cumulative content of CaO and ZrOis less than 2500 ppm.4. The fused grain as claimed in claim 1 , wherein the fused grain does not comprise an alumina AlOphase.5. The fused grain as claimed in claim 1 , wherein impurities in the fused grain are essentially CaO claim 1 , ZrO claim 1 , FeO claim 1 , SiO claim 1 , NaO and MnO.6. The fused grain as claimed in claim 1 , comprising less than 2000 ppm of CaO.7. The fused grain as claimed in claim 1 , comprising less than 200 ppm of ZrO.8. The fused grain as claimed in claim 1 , wherein AlOand MgO together represent more than 99.0% of the weight of said grain.9. The fused grain as claimed in claim 1 , wherein the matrix is composed of separate regions of spinel structure and ...

INORGANIC PHOSPHATE COMPOSITIONS AND METHODS

Disclosed and described are multi-component inorganic phosphate formulations of acidic phosphate components and basic oxide/hydroxide components. Also disclosed are high solids, atomizable compositions of same, suitable for spray coating. 1. An atomizable phosphate ceramic spray system comprising{'sup': 'm', 'sub': 4', 'm', '2, 'a first component cartridge comprising an aqueous solution of an acid-phosphate of chemical formula A(HPO).nHO, where A is hydrogen ion, ammonium cation, metal cation, or mixtures thereof; where m=1-3, and n=0-6; the first component solution adjusted to a pH of about 2 to about 5;'}{'sup': '2m', 'sub': m', '2m, 'a second component cartridge comprising an aqueous solution of an alkaline oxide or alkaline hydroxide represented by BO, B(OH), or mixtures thereof, where B is an element of valency 2m (m=1, 1.5, or 2) the second component solution adjusted to a pH of between 9-14; and'}optionally, a rheology modifier/suspending agent in an amount capable of providing shear thinning of either the first component or the second component and further capable of suspending a high solids content of either the first component or the second component for atomization; andhigh shear dispersion blade; anda plural sprayer operably connected to a pump.2. The phosphate ceramic spray system of claim 1 , wherein the second component is at least one of magnesium hydroxide and calcium hydroxide claim 1 , and water.3. The phosphate ceramic spray system of claim 1 , wherein the first component comprises about 2 to about 10 wt % phosphoric acid claim 1 , water claim 1 , and at least one of mono potassium phosphate and mono calcium phosphate.4. The phosphate ceramic spray system of claim 1 , further comprising aluminum oxide present in an amount sufficient to increase the hardness of the phosphate ceramic.5. The phosphate ceramic spray system of claim 1 , wherein the rheology modifier/suspending agent is at least one of guar gum claim 1 , diutan gum claim 1 , welan gum ...

DIELECTRIC CERAMIC COMPOSITION AND CERAMIC ELECTRONIC COMPONENTS

Provided is a dielectric ceramic composition including a first component and a second component, wherein the first component comprises an oxide of Ca of 0.00 mol % to 35.85 mol % an oxide of Sr of 0.00 mol % to 47.12 mol %, an oxide of Ba of 0.00 mol % to 51.22 mol %, an oxide of Ti of 0.00 mol % to 17.36 mol %, an oxide of Zr of 0.00 mol % to 17.36 mol %, an oxide of Sn of 0.00 mol % to 2.60 mol %, an oxide of Nb of 0.00 mol % to 35.32 mol %, an oxide of Ta of 0.00 mol % to 35.32 mol %, and an oxide of V of 0.00 mol % to 2.65 mol %, and the second component includes at least (a) an oxide of Mn of 0.005% by mass to 3.500% by mass and (b) an oxide of Cu and/or an oxide of Ru. 1. A dielectric ceramic composition comprising:a first component; anda second component, wherein{'sub': 2', '2', '2', '2', '5', '2', '5', '2', '5, 'as a content ratio relative to a total number of moles of the first component when converted into following oxides, the first component comprises an oxide of Ca of 0.00 mol % to 35.85 mol % in terms of CaO, an oxide of Sr of 0.00 mol % to 47.12 mol % in terms of SrO, an oxide of Ba of 0.00 mol % to 51.22 mol % in terms of BaO, an oxide of Ti of 0.00 mol % to 17.36 mol % in terms of TiO, an oxide of Zr of 0.00 mol % to 17.36 mol % in terms of ZrO, an oxide of Sn of 0.00 mol % to 2.60 mol % in terms of SnO, an oxide of Nb of 0.00 mol % to 35.32 mol % in terms of NbO, an oxide of Ta of 0.00 mol % to 35.32 mol % in terms of TaO, and an oxide of V of 0.00 mol % to 2.65 mol % in terms of VO;'}{'sub': 2', '2', '2', '2', '5', '2', '5', '2', '5, 'the first component comprises at least one oxide selected from the oxide of Ca, the oxide of Sr, and the oxide of Ba, at least one oxide selected from the oxide of Ti and the oxide of Zr, and at least one oxide selected from the oxide of Nb and the oxide of Ta as essential components, and a total content ratio of the oxide of Ca in terms of CaO, the oxide of Sr in terms of SrO, and the oxide of Ba in terms of BaO is ...

DIELECTRIC COMPOSITION AND ELECTRONIC COMPONENT

A dielectric composition includes a main phase and a Ca—Si—P—O segregation phase. The main phase includes a main component expressed by ABO. “A” includes at least one selected from calcium and strontium. “B” includes at least one selected from zirconium, titanium, hafnium, and manganese. The Ca—Si—P—O segregation phase includes at least calcium, silicon, and phosphorus. 1. A dielectric composition comprising a main phase and a Ca—Si—P—O segregation phase , wherein{'sub': '3', 'the main phase includes a main component expressed by ABO,'}“A” includes at least one selected from calcium and strontium,“B” includes at least one selected from zirconium, titanium, hafnium, and manganese, andthe Ca—Si—P—O segregation phase includes at least calcium, silicon, and phosphorus.3. The dielectric composition according to claim 1 , wherein the Ca—Si—P—O segregation phase has an orthorhombic crystal system.4. The dielectric composition according to claim 2 , wherein the Ca—Si—P—O segregation phase has an orthorhombic crystal system.5. The dielectric composition according to claim 1 , further comprising a Ca—Zr—O based segregation phase.6. The dielectric composition according to claim 2 , further comprising a Ca—Zr—O based segregation phase.7. The dielectric composition according to claim 3 , further comprising a Ca—Zr—O based segregation phase.8. The dielectric composition according to claim 4 , further comprising a Ca—Zr—O based segregation phase.9. The dielectric composition according to claim 1 , wherein the Ca—Si—P—O segregation phase has a circle equivalent diameter of 0.02-1 μm.10. The dielectric composition according to claim 2 , wherein the Ca—Si—P—O segregation phase has a circle equivalent diameter of 0.02-1 μm.11. The dielectric composition according to claim 3 , wherein the Ca—Si—P—O segregation phase has a circle equivalent diameter of 0.02-1 μm.12. The dielectric composition according to claim 5 , wherein the Ca—Si—P—O segregation phase has a circle equivalent diameter ...

FIRE-RESISTANT CERAMIC PRODUCT

The invention relates to a fire-resistant ceramic product. 1. A refractory ceramic product whose microstructure has the following features:a matrix composed of at least one first material;grains of at least one second material are embedded in the matrix;the grains of the second material have a coating composed of at least one third material on at least part of their surface;the first and second material have a different coefficient of thermal expansion;the third material is stable during use of the product.2. The product as claimed in in the form of a sintered product.3. The product as claimed in claim 1 , wherein the first material is based on one or more of the following oxides or compounds: MgO claim 1 , AlO claim 1 , FeO claim 1 , SiO claim 1 , CaO claim 1 , CrO claim 1 , ZrO claim 1 , MnO claim 1 , TiOor one or more of the compounds magnesia spinel claim 1 , hercynite claim 1 , galaxite or forsterite.4. The product as claimed in claim 1 , wherein the second material is based on one or more of the following oxides or compounds thereof: AlO claim 1 , MgO claim 1 , SiOor ZrO.5. The product as claimed in claim 1 , wherein the third material is based on at least one of the following materials: gahnite claim 1 , magnesia spinel claim 1 , forsterite claim 1 , mullite claim 1 , calcium zirconate or ABO(where A=Al claim 1 , Cr or Fe and B=Mg claim 1 , Zn claim 1 , Fe claim 1 , Mn or Ni).6. The product as claimed in claim 1 , wherein the thickness of the coating is in the range from 5 to 300 μm.7. The product as claimed in claim 1 , wherein the first material is in the form of grains sintered to one another.8. The product as claimed in claim 1 , wherein the coefficient of thermal expansion of the second material is at least 10% greater or less than the coefficient of thermal expansion of the first material claim 1 , based on the coefficient of thermal expansion of the first material.9. The product as claimed in claim 1 , wherein the particle size of the grains of the ...

Ceramic material and sputtering target member

A ceramic material of the present invention contains magnesium, zirconium, lithium, and oxygen as main components. The crystal phase of a solid solution obtained by dissolving zirconium oxide and lithium oxide in magnesium oxide is a main phase. The XRD peak of a (200) plane of the solid solution with CuKα rays preferably appears at 2θ=42.89° or less which is smaller than an angle at which a peak of a cubic crystal of magnesium oxide appears. The XRD peak more preferably appears at 2θ=42.38° to 42.89° and further preferably at 2θ=42.82° to 42.89°. In the ceramic material, the molar ratio Li/Zr of Li to Zr is preferably in the range of 1.96 or more and 2.33 or less.

SUBSTRATE FOR SEMICONDUCTOR DEVICE

A substrate includes a ceramic sintered body, a first circuit plate and a second circuit plate. The ceramic sintered body contains Al, Zr, Y and Mg. In the ceramic sintered body, the Mg content in terms of MgO is S1 mass % and the Zr content in terms of ZrOis S2 mass %, a following formula (1) is established. When a thickness of the first circuit plate is T1 mm, a thickness of the second circuit plate is T2 mm, and a thickness of the ceramic sintered body is T3 mm, following formulas (2), (3), and (4) are established. Formula (1): −0.004×S2+0.171 Подробнее

CALCIUM OXIDE-BASED CERAMIC CORE AND PREPARATION METHOD THEREOF

This invention publishes a method to prepare CaO-based ceramic cores used in investment casting applications. This method claims to use the rare earth oxide to coat the CaO core surface; later the coated cores are shaped then sintered to get the final products. CaO based core was made by 5˜15 wt % plasticizer, 0.001˜20 wt % mineralizer and the rare earth-coated CaO powders to balance for total 100%. This preparation method can solve the CaO core water absorption problems during core manufacturing, shipping and storage process while improve the core chemical inertness and mechanical properties. 1. A CaO-based ceramic core , consisting materials as follows: 5˜15 wt % plasticizer with the rare earth oxides-coated CaO powders for balance.2. The CaO-based ceramic core according to claim 1 , further consisting of 0.01˜20 wt % mineralizer in the raw material.3. The CaO-based ceramic core according to claim 2 , characterized in that the mineralizers are made of zirconia claim 2 , yttiria claim 2 , or zirconia and yttiria mixed in any weight ratio.4. The CaO-based ceramic core according to claim 1 , characterized in that the plasticizer consists of 50˜80 wt % paraffin wax claim 1 , 10˜40 wt % beeswax and 5˜10 wt % oleic acid.5. The CaO-based ceramic core according to claim 1 , characterized in that the rare earth oxides-coated CaO powders are CaO coated on the outside with rare earth oxides zirconia claim 1 , yttiria claim 1 , or zirconia mixed with yttiria.6. A method of making the CaO-based ceramic core according to claim 1 , characterized in that the method includes the following steps:Step 1: prepare rare earth oxides coated CaO powder;Step 2: stirring while heating the rare earth oxides-coated CaO powders with plasticizer to 50˜130° C. to make rare earth oxides-coated CaO-based ceramic cores; stirring while heating rare earth oxides-coated CaO powders, plasticizer and mineralizer to 50˜130° C. to make rare earth oxides-coated CaO-based ceramic cores;Step 3: shaping then ...

Method for Producing Magnesium Aluminate Spinels

A process for producing a magnesium aluminate spinel comprising the steps of: i) preparing a magnesium suspension containing a magnesium compound; ii) preparing an aluminum suspension containing an aluminum compound; iii) feeding the magnesium suspension and aluminum suspension independently into a spray dryer nozzle to form a mixed magnesium, aluminum suspension; iv) feeding the mixed magnesium, aluminium suspension from the spray dryer nozzle into a spray dryer to form a mixed magnesium and aluminum compound; and v) calcining the mixed magnesium and aluminum compound to generate a magnesium aluminate spinel. 1. A process for producing a magnesium aluminate spinel comprising the following steps:i) preparing a magnesium suspension containing a magnesium compound;ii) preparing an aluminum suspension containing an aluminum compound;iii) feeding the magnesium suspension and aluminum suspension independently into a spray dryer nozzle to form a mixed magnesium, aluminum suspension;iv) feeding the mixed magnesium, aluminium suspension from the spray dryer nozzle into a spray dryer to form a mixed magnesium and aluminum compound; andv) calcining the mixed magnesium and aluminum compound to generate a magnesium aluminate spinel.2. The process according to claim 1 , wherein the magnesium suspension and the aluminum suspension are fed into the spray dryer by a spray dryer nozzle comprising at least two inlets that allows the magnesium suspension and the aluminum suspension to be fed independently into the spray dryer nozzle where they are combined and fed out into the spray dryer as a mixed magnesium aluminum suspension.3. The process according to wherein a pump system is used to feed the magnesium and aluminum suspensions independently into the spray dryer nozzle.4. The process according to claim 1 , wherein the aluminum compound comprises aluminum oxyhydroxide claim 1 , aluminum oxide claim 1 , aluminum hydroxide claim 1 , or mixtures thereof.5. The process according to ...

MAGNESIUM ALUMINATE-BASED SINTERED BODY AND SEMICONDUCTOR MANUFACTURING APPARATUS MEMBER

A magnesium aluminate-based sintered body and a member for a semiconductor manufacturing apparatus. The magnesium aluminate-based sintered body contains magnesium aluminate as a main crystal phase. The magnesium aluminate-based sintered body also contains Zn and K such that a sum of zinc content in terms of ZnO and potassium content in terms of KO is in a range of 30 ppm to 500 ppm relative to the total mass of oxides calculated from the contents of all constituents. The member for a semiconductor manufacturing apparatus includes the magnesium aluminate-based sintered body.

Ceramic Composition

A ceramic composition which can be used as a sintering aid includes 1-2 mol % of magnesium oxide (MgO), 5-15 mol % of aluminum oxide (AlO), 25-40 mol % of silicon dioxide (SiO), 40-55 mol % of calcium oxide (CaO), 0.1-8 mol % of ferric oxide (FeO), 0.1-2 mol % of sulfur trioxide (SO) and 0.1-2 mol % of titanium oxide (TiO). Alternatively, the ceramic composition includes 1-8 mol % of MgO, 5-15 mol % of AlO, 25-40 mol % of SiO, 40-55 mol % of CaO, 0.1-8 mol % of FeO, 0.1-2 mol % of SOand 0.9-2 mol % of TiO. 1. A ceramic composition comprising 1-8 mol % of magnesium oxide , 5-15 mol % of aluminum oxide , 25-40 mol % of silicon dioxide , 40-55 mol % of calcium oxide , 0.1-8 mol % of ferric oxide , 0.1-2 mol % of sulfur trioxide and 0.1-2 mol % of titanium oxide.2. The ceramic composition as claimed in claim 1 , wherein sum of mole percentages of magnesium oxide and ferric oxide is larger than 4 mol %.3. The ceramic composition as claimed in claim 1 , wherein the ceramic composition comprises 0.1-5 mol % of an alkali metal oxide.4. The ceramic composition as claimed in claim 3 , wherein the alkali metal oxide is selected from potassium oxide claim 3 , sodium oxide claim 3 , rubidium oxide claim 3 , or cesium oxide.5. A ceramic composition comprising 1-8 mol % of magnesium oxide claim 3 , 5-15 mol % of aluminum oxide claim 3 , 25-40 mol % of silicon dioxide claim 3 , 40-55 mol % of calcium oxide claim 3 , 0.1-8 mol % of ferric oxide claim 3 , 0.1-2 mol % of sulfur trioxide and 0.9-2 mol % of titanium oxide.6. The ceramic composition as claimed in claim 5 , wherein sum of mole percentages of magnesium oxide and ferric oxide is larger than 4 mol %.7. The ceramic composition as claimed in claim 5 , wherein the ceramic composition comprises 0.1-5 mol % of an alkali metal oxide.8. The ceramic composition as claimed in claim 7 , wherein the alkali metal oxide is selected from potassium oxide claim 7 , sodium oxide claim 7 , rubidium oxide claim 7 , or cesium oxide. The ...

SINTERED COMPACT MAGNESIUM OXIDE TARGET FOR SPUTTERING, AND METHOD FOR PRODUCING SAME

A sintered compact magnesium oxide target for sputtering has a purity of 99.99 wt % or higher excluding C, a density of 3.57 g/cmor higher, and a whiteness of 60% or less. To uniformly deposit a magnesium oxide film, a magnesium oxide target having a higher purity and a higher density is demanded. An object is to provide a target capable of realizing the above and a method for producing such a target. While a magnesium oxide sintered compact sputtering target is produced by hot-pressing a raw material powder, there is a problem in that color shading occurs in roughly φ60 (within a circle having a diameter of 60 mm) at the center part of the target. Conventionally, no particularly attention was given to this problem. However, in recent years, it has become necessary to investigate and resolve this problem in order to improve the deposition quality. 1{'sub': 3', '3, 'adding raw material powder of MgCOin an amount of 5 wt % or more and less than 30 wt % to raw material powder of magnesium oxide (MgO), the raw material powders of magnesium oxide (MgO) and MgCOhaving a purity of 99.99 wt % or higher excluding C and an average grain size of 0.5 μm or less;'}{'sub': '3', 'mixing the raw material powder of MgCOwith the raw material powder of magnesium oxide (MgO) to produce a mixture; and'}{'sup': 2', '3, 'hot pressing the mixture at a temperature of 1500° C. or less and an applied pressure of 300 kgf/cmor more to obtain a sintered compact of magnesium oxide having a purity of 99.99 wt % or higher excluding C, a density of 3.57 g/cmor higher, and a whiteness of 60% or less.'}. A method for producing a sputtering target comprising a sintered compact of magnesium oxide, comprising the steps of: This application is a divisional of co-pending U.S. application Ser. No. 14/356,395 which is a 371 National Stage of International Application No. PCT/JP2012/083391, filed Dec. 25, 2012, which claims the benefit under 35 USC 119 of Japanese Application No. 2011-285757, filed Dec. 27, ...

LOW TEMPERATURE CO-FIRED CERAMIC MATERIAL AND PREPARATION METHOD THEREFOR

A low temperature co-fired ceramic powder has a chemical composition of xRO-yR′O-zMO-wM′O, wherein R is Li, Na and/or K, R′ is Mg, Ca, Sr, Ba, Zn and/or Cu, M is B, Al, Ga, In, Bi, Nd, Sm, and/or La, M′ is Si, Ge, Sn, Ti, and/or Zr, x≧0, y≧0, z≧20%, w≧15%, and x+y+z+w=1. The preparation method comprises: weighing constituent powders according to the composition of the ceramic powder, and uniformly mixing these powders as a raw material powder; and presintering the raw material powder in a muffle furnace followed by grinding, the presintering comprising gradiently heating the raw material powder to a maximum temperature of 950° C. by first rising to 350-450° C. and staying thereat for a period, then staying at intervals of 50-100° C. for a period. 1. A preparation method for a low temperature co-fired ceramic powder which has a chemical composition of xRO-yR′O-zMO-wM′O , wherein R is selected from at least one of Li , Na , and K , R′ is selected from at least one of Mg , Ca , Sr , Ba , Zn , and Cu , M is selected from at least one of B , Al , Ga , In , Bi , Nd , Sm , and La , M′ is selected from at least one of Si , Ge , Sn , Ti , and Zr , x , y , z , and w represent weight percentages , x≧0 , y≧0 , z≧20% , w≧15% , and x+y+z+w=1 , the preparation method comprising the steps of:{'sub': 2', '2', '3', '2, '1) weighing RO powder, r′O powder, MOpowder, and M′Opowder according to the composition of the low temperature co-fired ceramic powder, and uniformly mixing these powders as a raw material powder; and'}2) presintering the raw material powder in a muffle furnace followed by grinding to give the low temperature co-fired ceramic powder, the presintering comprising gradiently heating the raw material powder to a maximum temperature of not higher than 950° C., during which a furnace temperature first rises to 350-450° C. and stays thereat for a period, then, as the temperature rises, stays at each interval of 50-100° C. thereabove for a period.2. The preparation method ...

HIGH PERFORMANCE CERAMICS FROM COLD SINTERED NANOSCALE POWDERS

The invention relates to a process for making a ceramic body that comprises providing particles of a metal salt precursor material wetted by a liquid medium. The particles are characterized by a grain size of below 600 nm, and the precursor material has a solubility in the liquid medium of at least 10mol/L. A pressure of ≥100 MPa is applied at a temperature of below 100° C., rendering a material of high theoretical density values previously unattainable at low temperatures. The invention further relates to a calcium carbonate ceramic material of the vaterite isomorph having a density of the material ≥1.76 g/cm3 and a Modulus of rupture ≥30 MPa, and to a calcium phosphate ceramic material consisting of the monetite isomorph with ≥2.5 g/cm3 density and a Modulus of rupture ≥18 MPa. 1. A process for making a ceramic body , comprising the steps of i. said precursor material is a metal salt;', 'ii. said particles are characterized by a grain size of below 600 nm, even more particularly below 100 nm, or even at 50 nm or less, and', {'sup': '−5', 'iii. said precursor material has a solubility in said liquid medium of at least 10mol/L;'}], 'a. providing a precursor composition consisting of particles of a precursor material wetted by a liquid medium, wherein'} i. a pressure of ≥100 MPa, particularly ≥150 MPa, ≥200 MPa, ≥300 MPa, ≥400 MPa, or even more particularly ≥500 MPa,', 'ii. at a temperature of ≤100° C., particularly at a temperature below 80° C., even more particularly below 60° C. or even at room temperature (approx. 25° C.), 'b. applying'}to said precursor composition, resulting in a product ceramic body.2. The process of claim 1 , wherein said particles are characterized by a grain size of below 100 nm.3. The process of claim 1 , wherein said particles are characterized by a grain size of 50 nm or less.4. The process of claim 1 , wherein the pressure is applied at room temperature.5. The process of claim 1 , wherein said pressure is applied for longer than 300 s ...

TRANSPARENT CERAMIC MATERIAL

A transparent ceramic material and the use thereof, wherein the transparent ceramic has an RIT>75%, measured on a 2 mm-thick, polished disk with light with a wave length of 600 nm, and average particle sizes in the range of >10 to =<100 micrometer, preferably >10 to 50 micrometer, more preferably >10 to 20 micrometer. The transparent ceramic material is, for example, Mg—Al spinel, ALON, aluminum oxide, yttrium aluminum garnet, yttrium oxide or zirconium oxide. 111.-. (canceled)12. A transparent ceramic having an RIT>75% , measured on a 2-mm-thick polished disk with light of the wavelength of 600 nm , and an average grain size in the range of >10 to ≦100 μm.13. The transparent ceramic of claim 12 , wherein the transparent ceramic has a high optical quality.14. The transparent ceramic according to claim 12 , wherein the average grain size ranges from >10 to 50 μm.15. The transparent ceramic according to claim 12 , wherein the average grain size ranges from >10 to 20 μm.16. The transparent ceramic according to having a speck frequency of <10%.17. The transparent ceramic according to claim 13 , wherein the transparent ceramic comprises a second phase having a maximum size of less than 2000 μm.18. The transparent ceramic according to claim 12 , wherein the ceramic comprises at least one oxide selected from the group consisting of zirconium oxide claim 12 , aluminum oxide claim 12 , magnesium oxide claim 12 , yttrium oxide claim 12 , zinc oxide claim 12 , tin oxide claim 12 , calcium oxide claim 12 , titanium oxide claim 12 , gallium oxide claim 12 , indium oxide claim 12 , hafnium oxide claim 12 , scandium oxide claim 12 , cerium oxide claim 12 , europium oxide and barium oxide.19. The transparent ceramic according to claim 12 , comprising at least one member selected from the group consisting of Mg—Al spinel claim 12 , AlON claim 12 , aluminum oxide claim 12 , yttrium aluminum garnet claim 12 , yttrium oxide and zirconium oxide.20. The transparent ceramic according to ...

DIELECTRIC FILM AND ELECTRONIC COMPONENT

A dielectric film containing an alkaline earth metal oxide having a NaCl type crystal structure as a main component, wherein the dielectric film has a (111)-oriented columnar structure in a direction perpendicular to the surface of the dielectric film, and in a Cu—Kα X-ray diffraction chart of the dielectric film, a half width of the diffraction peak of (111) is in a range of from 0.3° to 2.0°. 1. A dielectric film , comprising an alkaline earth metal oxide having a NaCl type crystal structure as a main component , whereinthe dielectric film has a (111)-oriented columnar structure in a direction perpendicular to the surface of the dielectric film, andin a Cu—Kα X-ray diffraction chart of the dielectric film, a half width of the diffraction peak of (111) is in a range of from 0.3° to 2.0°.2. The dielectric film according to claim 1 , whereinthe dielectric film contains at least one element selected from the group consisting of Ta, Nb, V, Hf, Zr, Ti and Zn as a subcomponent.3. The dielectric film according to claim 2 , whereinwhen the total content of the subcomponents is set as x, the x is in the range of 0 mol % Подробнее

AMORPHOUS DIELECTRIC FILM AND ELECTRONIC COMPONENT

The present invention aims to provide an amorphous dielectric film and an electronic component in which the relative permittivity and the temperature coefficient of electrostatic capacitance can be maintained and the withstand voltage can be increased even if the dielectric film is further thinned. The amorphous dielectric film of the present invention is characterized in that it is a dielectric film composed of an amorphous composition with A-B—O as the main component, wherein A contains at least two elements selected from the group consisting of Ba, Ca and Sr, and B contains Zr. When the main component of the dielectric film is represented by (BaCaSr)—B—O, x, y and z meet the conditions of 0≦x≦1, 0≦y≦1, 0≦z≦1, respectively, x+y+z=1 and at least any two of x, y and z are 0.1 or more. When A/B is represented by α, 0.5≦α≦1.5. 1. An amorphous dielectric film consisting of an amorphous composition with A-B—O as the main component , wherein ,{'sub': x', 'y', 'z', 'σ, 'A contains at least two elements selected from the group consisting of Ba, Ca and Sr, B contains Zr, when the main component of said dielectric film is represented by (BaCaSr)—B—O, x, y and z meet the condition of 0≦x≦1, 0≦y≦1, 0≦z≦1, respectively, x+y+z=1, and at least any two of x, y and z are 0.1 or more,'}and when A/B is represented by α, 0.5≦α≦1.5.2. The amorphous dielectric film of claim 1 , wherein claim 1 ,{'sub': x', 'y', 'z', 'α', '1-w', 'w, 'B which contains Zr further contains Ti, and when the main component of said dielectric film is represented by (BaCaSr)-(TiZr)—O, 0.4≦w≦1.'}3. An electronic component comprising the amorphous dielectric film of .4. An electronic component comprising the amorphous dielectric film of . The present invention relates to an amorphous dielectric film and an electronic component.As an example of the electronic component which uses dielectric films, the thin film capacitor, the thin film filter for high frequency or the like can be listed. These components are ...

Sintering-free inorganic ceramic brick-plate and its preparation method

A sintering-free inorganic ceramic brick-plate and its preparation method are disclosed. The sintering-free inorganic ceramic brick-plate includes following components by mass parts: 25-40 parts of magnesium oxide; 20-35 parts of magnesium chloride; 20-30 parts of fumed silica; 10-20 parts straw powders; 0.1-0.3 parts of graphene powders with a particle size of 2000 meshes; and 0.2-0.4 parts of airgel powders with a particle size of 100 nm. Compared with the prior art, the present invention utilizes a variety of raw natural non-toxic natural mineral raw materials, namely, the graphene powders with the particle size of 2000 meshes and the airgel powders with the particle size of 100 nm for mixing, and then the mixed raw materials can be solidified at room temperature and form sheets, and then the surface of the sheets is processed through printing or spraying glaze, so as to achieve the effect of high-grade tiles and natural marble. 2. The sintering-free inorganic ceramic brick-plate claim 1 , as recited in claim 1 , wherein: the sintering-free inorganic ceramic brick-plate comprises following components by mass parts: 32 parts of the magnesium oxide claim 1 , 28 parts of the magnesium chloride claim 1 , 25 parts of the fumed silica claim 1 , 14.5 parts of the straw powders claim 1 , 0.2 parts of the graphene powders with the particle size of 2000 meshes claim 1 , and 0.3 parts of the airgel powders with the particle size of 100 nm.3. A preparation method of a sintering-free inorganic ceramic brick-plate claim 1 , comprising steps of:(S1) stirring after placing magnesium chloride and water in a blending tank, completely dissolving the magnesium chloride, obtaining a mixed solution, and then pumping the mixed solution through a first water pump into a first sealing iron can;(S2) pumping magnesium oxide into a second sealing iron can through a second water pump;(S3) evenly stirring graphene powders with a particle size of 2000 meshes, airgel powders with a particle ...

BATCH FOR PRODUCTION OF A REFRACTORY MAGNESIA-CARBON PRODUCT OR A REFRACTORY ALUMINA-MAGNESIA-CARBON PRODUCT, A PROCESS FOR THE PRODUCTION OF A PRODUCT OF THIS TYPE, A PRODUCT OF THIS TYPE AS WELL AS THE USE OF A PRODUCT OF THIS TYPE

The invention concerns a batch for the production of a refractory magnesia-carbon product or a refractory alumina-magnesia-carbon product, a process for the production of a refractory magnesia-carbon product or a refractory alumina-magnesia-carbon product, a refractory magnesia-carbon product or a refractory alumina-magnesia-carbon product as well as the use of a magnesia-carbon product or a refractory alumina-magnesia-carbon product. 1. A batch for the production of a refractory carbon-bonded product , comprising the following components in the following proportions by weight , respectively with respect to the total weight of the product:70% to 97% by weight of a base component;1.0% to 2.3% by weight of a binder component in the form of at least one resol;1.5 to 3% by weight of a binder component in the form of at least one pitch;1.0% to 28% by weight of a carbon component in the form of at least one of the following carbon sources: graphite or carbon black.2. The batch as claimed in claim 1 , having a binder component in the form of at least one pitch in the form of coaltar pitch.3. The batch as claimed in claim 1 , having a base component formed by a magnesia component or an alumina-magnesia component.4. The batch as claimed in claim 3 , having a magnesia component in the form of at least one of the following MgO-based raw materials: fused magnesia or sintered magnesia.5. The batch as claimed in claim 3 , having an alumina-magnesia component in the form of at least one of the following MgO- or AlO-based raw materials: fused corundum claim 3 , sintered corundum claim 3 , bauxite claim 3 , magnesia spinel claim 3 , sintered magnesia or fused magnesia claim 3 , wherein the raw materials comprise MgO as well as AlO.6. The batch as claimed in claim 1 , having a proportion of solid resin of less than 0.5% by weight.7. A process for the production of a refractory carbon-bonded product claim 1 , comprising the following steps: 70% to 97% by weight of a base component;', ...

Salt Inert/Resistant Barrier Compositions and Their Industrial Application

The present invention provides for a solid body composition that is able to withstand penetration and/or reaction with salts or salt compositions in one or more states of matter (solid, liquid, gas). The composition comprises at least one aggregate and at least one binder. The aggregate may be chosen based on its thermodynamic stability compared to a salt composition. The binder comprises a resol resin or a novolac resin, or a combination of one or more of a resol resin and one or more of a novolac resin. The resin binder sets to provide initial strength then is pyrolized to form a glassy carbon which acts as a barrier to a salt phase or phases of an industrial process. 1. A composition comprising at least one aggregate and at least one phenolic resin , wherein said phenolic resin is pyrolyzed to result in the formation of a condensed ring glassy carbon , wherein said glassy carbon is a bonding matrix of the resulting composition.2. The composition of wherein said aggregate is at least one selected from the group consisting of LiF claim 1 , ZrF claim 1 , MgF claim 1 , KF claim 1 , MnF claim 1 , NaF claim 1 , YF claim 1 , BaF claim 1 , CaF claim 1 , BaO claim 1 , AlO claim 1 , SiO2 claim 1 , CaO claim 1 , TiO claim 1 , TiO claim 1 , TiO claim 1 , TiO claim 1 , ZrO claim 1 , YO claim 1 , MgO carbon compounds claim 1 , graphite claim 1 , SiC claim 1 , BC (BC) claim 1 , WC claim 1 , AlN claim 1 , BN claim 1 , a rare earth oxide claim 1 , an alkali halide claim 1 , and an alkaline halide claim 1 , and combinations thereof.3. The composition of including wherein said aggregate is CaO plus AlO.4. The composition of including wherein said aggregate is one of CaO-2AlO(CaAlO) claim 2 , CaO—AlO claim 2 , or CaO-6AlO claim 2 , or combinations of one or more of CaO-2AlO(CaAlO) claim 2 , CaO—AlO claim 2 , and CaO-6AlO.5. The composition of wherein said aggregate is a mixture of at least two or more of said aggregates.6. The composition of wherein said alkali halide is at least ...

Magnesium oxide based dielectric ceramics with ultrahigh dielectric breakdown strength and its preparation method

The present application relates to a magnesium oxide based dielectric ceramics with ultrahigh dielectric breakdown strength and a preparation method thereof. The composition of the magnesium oxide based dielectric ceramic material comprises: (1−x)MgO-xAl2O3, wherein 0<x≤0.12 and x is a mole percentage. The material has a specific composite structure with magnesium aluminate spinel acting as a second phase surrounding a principal crystalline phase, MgO.

TOUGHENED CERAMIC AND METHODS OF TOUGHENING CERAMIC

Disclosed is a ceramic composition comprising a plurality of at least semi-coherent particles with an average diameter ranging from 1 nm to 50 nm included within a matrix, wherein the matrix comprises one metal carbonate salt, metal oxide or metalloid oxide, the particles and the matrix share at least one metal element and the metal element is 10% to 80% of the total content of said matrix, and the composition has a lattice mismatch of less than 5%. Disclosed are also an article and methods for making the ceramic composition of the present invention. 1. A ceramic composition comprising a plurality of at least semi-coherent particles with an average diameter ranging from 1 nm to 50 nm included within a matrix , wherein:a. said matrix comprises one metal carbonate salt, metal oxide or metalloid oxide;b. said particles and said matrix share at least one metal element and said metal element is 10% to 80% of the total content of said matrix; andc. said composition has a lattice mismatch of less than 5%.2. The composition of claim 1 , wherein said matrix is crystal matrix.3. The composition of claim 1 , having a Young's modulus of at least 50 GPa.4. The composition of claim 1 , having a hardness of at least 1 GPa.5. The composition of claim 1 , wherein said matrix comprises a calcium rich matrix and said nanoparticles are magnesium richparticles.6. the composition of claim 5 , wherein the concentration of magnesium in said particles is in the range of 5 mol % to 40 mol %.7. The composition of claim 1 , wherein said matrix comprises calcium carbonate.8. The composition of claim 1 , wherein said matrix comprises magnesium.9. The composition of claim 8 , wherein the concentration of magnesium in said matrix is in the range of 0 mol % to 90 mol %.10. The composition claim 1 , wherein said nanoparticles have an average diameter in the range of 1 nm to 20 nm.11. The composition of claim 1 , wherein said nanoparticles have an average diameter in the range of 1 nm to 9 nm.12. The ...

TRANSPARENT SPINEL CERAMICS AND METHOD FOR THE PRODUCTION THEREOF

Transparent spinel ceramics, as they can be used, for example, as protective ceramics, and to a method for the production thereof. 1. Spinel ceramics which are transparent in wavelength ranges of infrared light , composed of sintered magnesium aluminum spinel having an average structural grain size of ≦10 μm and having maximally 0.5 mass % overall of homogeneously distributed additives of calcium and/or strontium and/or barium which are present in a concentration , expressed respectively as an oxide , of 0.005 to <0.2 mass % CaO and/or 0.005 to <0.5 mass % SrO and/or 0.005 to <0.5 mass % BaO.2. Spinel ceramics which are transparent in wavelength ranges of visible light , composed of sintered magnesium aluminum spinel having an average structural grain size of ≦10 μm and having maximally 0.3 mass % overall of homogeneously distributed additives of calcium and/or strontium and/or barium which are present in a concentration , expressed respectively as an oxide , of 0.005 to <0.2 mass % CaO and/or 0.005 to <0.3 mass % SrO and/or 0.005 to <0.25 mass % BaO.3. Transparent spinel ceramics according to in which the average structural grain size of the sintered magnesium aluminum spinel is <5 μm claim 1 , advantageously <2.5 μm claim 1 , more advantageously <1 μm.4. Transparent spinel ceramics according to in which maximally 0.3 mass % overall of homogeneously distributed additives are present.5. Transparent spinel ceramics according to in which maximally 0.2 mass % overall of homogeneously distributed additives are present.6. Transparent spinel ceramics according to in which calcium is present as an additive in a concentration claim 1 , expressed as CaO claim 1 , of 0.01 to 0.1 mass %.7. Transparent spinel ceramics according to in which strontium and/or barium are present as additives in a concentration claim 1 , expressed as SrO and/or BaO claim 1 , of 0.01 to 0.4 mass % of SrO and/or 0.01 to 0.4 mass % of BaO claim 1 , wherein maximally 0.3 mass % of additives of strontium ...

REFRACTORIES AND USE THEREOF

A refractory has the form of a dry, mineral batch of fire-resistant mineral materials combined in such a way that refractories which are long-term resistant to fayalite-containing slags, sulfidic melts (mattes), sulfates and non-ferrous metal melts and are used for refractory linings in industrial non-ferrous metal melting furnaces can be manufactured. The refractory at least contains: —at least one coarse-grained olivine raw material as the main component; —magnesia (MgO) meal; —at least one fire-resistant reagent which, during the melting process, acts (in situ) in a reducing manner on non-ferrous metal oxide melts and/or non-ferrous metal iron oxide melts and converts same into non-ferrous metal melts. 1. Refractory product in the form of a dry , mineral batch of refractory mineral materials , composed , in terms of materials , in such a manner that refractory products for fire-side lining of industrial non-ferrous metal smelting furnaces that are resistant to fayalite slags , sulfidic melts (mattes) , sulfates , and non-ferrous metal melts , over the long term , can be produced from them , and having:at least one coarse-grained olivine raw material as the main component,magnesia meal (MgO meal),at least one refractory reagent that acts to reduce non-ferrous metal oxide melts and/or non-ferrous metal iron oxide melts during the smelting process (in situ) and to convert them to non-ferrous metal melts.2. Product according to claim 1 , whereinthe reagent is fine-grained carbon, particularly graphite and/or carbon black and/or anthracite and/or coke, but preferably graphite.3. Product according to claim 1 , 15 to 74, particularly 30 to 65 wt.-% olivine raw material, particularly with more than 70, particularly more than 75 wt.-% forsterite,', '25 to 55, particularly 30 to 50 wt.-% magnesia meal, particularly with >90, particularly >95 wt.-% MgO,', '1 to 30, particularly 5 to 20 wt.-% reagent., 'comprising the following dry substance compositions4. Product according ...

HIGH-PURITY CALCIUM CARBONATE SINTERED BODY AND PRODUCTION METHOD THEREOF, AND HIGH-PURITY CALCIUM CARBONATE POROUS SINTERED BODY AND PRODUCTION METHOD THEREOF

A high-purity calcium carbonate sintered body containing less impurities and available for biological and like applications, a production method, a high-purity calcium carbonate porous sintered body containing less impurities and available for biological and like applications, and a production method. A method for producing a high-purity calcium carbonate sintered body includes the steps of: compaction molding calcium carbonate with a purity of 99.7% by mass or more to make a green body; and sintering the green body to produce a calcium carbonate sintered body. A method for producing a high-purity calcium carbonate porous sintered body according to the present invention includes the steps of: preparing a dispersion liquid containing calcium carbonate with a purity of 99.7% by mass or more; adding a foaming agent to the dispersion liquid, followed by stirring until foamy to make a foam; and sintering the foam to produce a calcium carbonate porous sintered body. 1. A high-purity calcium carbonate sintered body containing 99.7% by mass or more calcium carbonate and having a relative density of 90% or more.2. A method for producing a high-purity calcium carbonate sintered body , the method comprising the steps of:compaction molding calcium carbonate with a purity of 99.7% by mass or more to make a green body; andsintering the green body to produce a calcium carbonate sintered body.3. The method for producing a high-purity calcium carbonate sintered body according to claim 2 , wherein the green body contains calcium carbonate only.4. The method for producing a high-purity calcium carbonate sintered body according to claim 2 , wherein the green body is sintered at 420 to 600° C.5. The method for producing a high-purity calcium carbonate sintered body according to claim 2 , wherein the compaction molding is uniaxial molding.6. The method for producing a high-purity calcium carbonate sintered body according to claim 2 , wherein the green body is sintered in air.7. A high- ...

Method of obtaining organomagnesium oxane yttrium oxane aluminoxanes, binding and impregnation materials based thereon

FIELD: chemistry. SUBSTANCE: invention relates to a method of producing organomagnesium oxane yttrium oxane aluminoxanes of general formula [(R**O)MgO] k •[Al(OR)l(OR*) x (OH)zOy] m •[(R**O) s Y(OH) t O r ] p (1), where k, p=0.1–6, m=3–12; k/m+l+x+2y+z=3; s+t+2r=3; R – C n H 2n+1 , n=2–4; R* – C(CH 3 )=CHC(O)OC 2 H 5 ; R** – C(CH 3 )=CHC(O)CH 3 . Method comprises reacting polyalkoxyaluminoxanes with a yttrium acetylacetonate hydrate of formula {[CH 3 (O)CCH=C(CH 3 )O] 3 Y⋅2.5H 2 O} and magnesium acetylacetonate [CH 3 (O)CCH=C(CH 3 )O] 2 Mg, or reacting organoyttrium oxane aluminoxanes with magnesium acetylacetonate, or reacting organomagnesium oxane aluminoxanes with a yttrium acetylacetonate hydrate, or reacting organoyttrium oxane aluminoxanes with organomagnesium oxane aluminoxanes in an organic solvent at temperature of 30–70 °C, followed by distilling off the solvent first at atmospheric pressure, and then under reduced pressure and temperature of up to 150 °C. Binders and impregnating compositions are disclosed. EFFECT: organomagnesium oxane yttrium oxane aluminoxanes can be used as precursors for the preparation of components of high-purity ceramic composites based on aluminum, yttrium and magnesium oxides. 2 cl, 3 dwg, 2 tbl, 4 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 644 950 C1 (51) МПК C07F 19/00 (2006.01) C04B 35/443 (2006.01) C08G 79/14 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C07F 19/00 (2006.01); C07F 19/005 (2006.01); C04B 35/443 (2006.01); C08G 79/14 (2006.01) (21)(22) Заявка: 2017104275, 09.02.2017 (24) Дата начала отсчета срока действия патента: Дата регистрации: 15.02.2018 (45) Опубликовано: 15.02.2018 Бюл. № 5 Адрес для переписки: 105118, Москва, Шоссе Энтузиастов, 38, НИПЛО, временному генеральному директору А.П. Стороженко (73) Патентообладатель(и): Акционерное общество "Государственный Ордена Трудового Красного Знамени научно-исследовательский институт химии и технологии ...

无机宽波远红外复合环保材料

本发明属于远红外复合材料,具体地是一种无机宽波远红外复合环保材料。现有的远红外材料的缺点是：材料单一、远红外波段狭窄，功能局限性大；有的复合材料配方不合理，含有对人体有害成分。本发明由和田玉25重量份、泗水砭石25重量份、磁石25重量份、托玛琳25重量份组成。制备步骤为：将各原料分别粉碎至6000目，混合、加适量水搅拌均匀；压制成型；常温晾干；高温1000℃煅烧24小时；常温冷却。压制的型状为粉状、粒状、片状、圆柱状。本发明优点是：选用的材料全部为中药材，无毒；远红外波段宽、功能多、应用广泛；能持久发射宽波远红外线；一次使用，长期受益，使用成本低。

Phase gradient nanocomposite window fabrication and method of fabricating durable optical windows

An optical window is provided and includes a core layer, a cladding layer and an electromagnetic interference (EMI) layer interposed between the core and cladding layers.

Direct-bonded periclase refractories and process of preparing same

Method for producing high-temperature co2 sorbents

FIELD: composite materials.SUBSTANCE: invention relates to the production of composite materials based on calcium oxide and zirconium dioxide and can be used to obtain high-temperature CO2sorbents for cleaning the exhaust gases of industrial enterprises from carbon dioxide. Disclosed is a method of obtaining a powder composite material using a zirconium-containing mineral raw material - baddeleyite concentrate including mixing calcium carbonate with baddeleyite concentrate in the ratio, wt%: baddeleyite concentrate - 11-27, calcium carbonate - 73-89, followed by grinding the mixture to a nanosized state in a bead mill in an aqueous medium using stabilized zirconia beads and heat treatment. As a result of heat treatment in a nitrogen atmosphere at a temperature of 800 °C, a high-temperature regenerating chemisorbent is obtained consisting of calcium oxide and calcium zirconate.EFFECT: preservation of the sorption capacity of the material during high-cycle use.3 cl, 2 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 745 486 C1 (51) МПК C04B 35/057 (2006.01) B01J 20/04 (2006.01) B01J 20/30 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C04B 35/057 (2021.01); B01J 20/0211 (2021.01); B01J 20/043 (2021.01); C04B 2235/3208 (2021.01); C04B 2235/3244 (2021.01); C04B 2235/5454 (2021.01) (21)(22) Заявка: 2020118599, 27.05.2020 27.05.2020 25.03.2021 Приоритет(ы): (22) Дата подачи заявки: 27.05.2020 2 7 4 5 4 8 6 R U Адрес для переписки: 392000, г. Тамбов, ул. Интернациональная, 33, Федеральное государственное бюджетное образовательное учреждение высшего образования "Тамбовский государственный университет имени Г.Р. Державина" (56) Список документов, цитированных в отчете о поиске: US 2010/0196259 A1, 05.08.2010. RU 2167128 С2, 20.05.2001. RU 2451542 C2, 27.05.2012. RU 2229335 C1, 27.05.2004. UA 17417 A, 06.05.1997. EP 1629886 A1, 01.03.2006. US 2010/ 0158791 A1, 24.06.2010. (54) СПОСОБ ПОЛУЧЕНИЯ ВЫСОКОТЕМПЕРАТУРНЫХ ...

Method for making lime slurry with high-speed agitation

A manufacturing method of lime slurry is provided to manufacture lime slurry of the high quality using a simple method in a short time by proceeding hydration and crushing together at a high temperature using a frictional heat due to high speed-mixing and a reaction heat. A manufacturing method of lime slurry comprises steps of: mixing water 70~80 weight% and quicklime 20~30 weight% into a hydration tank; mixing a mixture for 10-30 minutes at 1,500 to 2,700 rpm and hydrating and crushing the mixture and obtaining the lime slurry; distributing the hydrated and pulverized lime slurry through sheave of 200~325 mesh.

Phosphate coated inorganic fiber and methods of preparation and use

Method of producing ceramic gradient material

FIELD: metallurgy. SUBSTANCE: invention relates to production of gradient ceramic materials based on powders of metal oxides. Method comprises obtaining polydispersed ceramic powder metal oxide or mixture of powders of metal oxides by spraying aqueous solutions of metal salts or mixtures of metal salts into high-frequency discharge plasma through slot nozzle of variable cross-section from 0.1 to 100 mcm, then adding organic binder to said powder, mixing moulding mixture, poured into a mould, holding moulding mixture for demixing thereof into fractions and sintering obtained workpiece with isothermal holding. Polydispersed ceramic powder may be powder of following oxides: Al 2 O 3 , ZrO 2 , CaO, Y 2 O 3 , MgO. Moulding mixture can have following ratio of components: powder of metal oxide or mixture of powders of metal oxides 80-85 wt%, organic binder - balance. Organic binder used can be paraffin, or wax, or a mixture of paraffin and wax in ratio of 9:1. EFFECT: obtaining ceramic gradient material with a structure ensuring uniform change of mechanical properties along section of article and having high resistance to thermal effects - not less than 200 cycles at temperature 1,600 °C. 8 cl, 4 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 592 652 C2 (51) МПК B22F 3/10 (2006.01) C22C 29/12 (2006.01) C04B 35/64 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2014151346/02, 29.03.2013 (24) Дата начала отсчета срока действия патента: 29.03.2013 (43) Дата публикации заявки: 10.07.2016 Бюл. № 19 (45) Опубликовано: 27.07.2016 Бюл. № 21 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 17.12.2014 (86) Заявка PCT: 2 5 9 2 6 5 2 (56) Список документов, цитированных в отчете о поиске: RU 2454297 C1, 27.06.2012. RU 2164260 C1, 20.03.2001. RU 2252817 C1, 27.05.2005. JP 2002180107 A, 26.06.2002. CN 101418391 A, 29.04.2009. (73) Патентообладатель(и): Федеральное государственное бюджетное учреждение науки ...

Insulative ceramic compact

절연성 세라믹 조성물은 (A) MgAl 2 O 4 , Mg 3 B 2 O 6 및/또는 Mg 2 B 2 O 5 세라믹 분말, 및 (B) 산화 실리콘을 SiO 2 환산으로 약 13 내지 50중량 %, 산화 붕소를 B 2 O 3 환산으로 8 내지 60중량 %, 산화 알루미늄을 Al 2 O 3 환산으로 약 20중량 %이하, 및 산화 마그네슘을 MgO 환산으로 10 내지 55중량 %을 함유한 유리(glass) 분말의 소성 합성물로 구성되어 있다. 절연성 세라믹 조성물은 약 1000℃이하의 저온에서 소성하여 얻을 수 있고, Ag 또는 Cu로 소결하여서 얻을 수도 있으며, 유전율이 낮고 Q값이 높으며, 그리고 고주파 용도에 적합하다. The insulating ceramic composition comprises (A) MgAl 2 O 4 , Mg 3 B 2 O 6 and / or Mg 2 B 2 O 5 ceramic powder, and (B) about 13 to 50% by weight of silicon oxide in terms of SiO 2 , boron oxide Firing of glass powder containing 8 to 60% by weight in terms of B 2 O 3 , about 20% by weight or less in terms of Al 2 O 3 , and 10 to 55% by weight of magnesium oxide in terms of MgO It is composed of composites. The insulating ceramic composition may be obtained by firing at a low temperature of about 1000 ° C. or lower, or may be obtained by sintering with Ag or Cu, has a low dielectric constant, a high Q value, and is suitable for high frequency applications.

Nanocomposite for Infrared Laser Ceramic materials with High Power and Manufacturing method of the Same

본 발명은 고출력 적외선 레이저 세라믹 소재용 나노복합체 및 그의 제조방법에 관한 것으로, 보다 상세하게는 높은 도핑 농도에도 불구하고 우수한 기계적, 열적 특성을 나타내어 고출력 레이저로 활용 가능한 산화 이트륨-산화 마그네슘 나노복합체 및 이를 제조하는 방법에 관한 것이다. The present invention relates to a nanocomposite for a high-power infrared laser ceramic material and a manufacturing method thereof, and more particularly, to a yttrium oxide-magnesium oxide nanocomposite that can be used as a high-power laser by showing excellent mechanical and thermal properties despite a high doping concentration. It relates to a method of manufacturing.

A kind of calcium oxide-based ceramic-mould fast preparation method for complex parts manufacture

本发明公开了一种用于复杂零件制造的氧化钙基陶瓷铸型快速制备方法，属于快速精密铸造领域。采用碳酸钙粉体和适量矿化剂为原料制造陶瓷铸型素坯，将素坯脱脂后，和适量金属钙一起放入真空烧结炉中进行反应烧结，最后再将铸型放入大气烧结炉中终烧。金属钙单质与碳酸钙分解产生的二氧化碳反应生成氧化钙，提高了陶瓷铸型的致密度。适量的矿化剂促进了陶瓷铸型的烧结，提高了陶瓷铸型的抗水化性。使用上述方法制得的氧化钙基整体式陶瓷铸型具有优良的高温综合性能，解决了氧化铝基陶瓷铸型脱芯难、废品率高的技术难题，尤其适用于复杂零件的快速制造。

Porous thermal insulation coating layer and preparing method for the same

The present invention relates to a method for manufacturing a porous thermal insulation coating layer, and a porous thermal insulation coating layer securing low thermal conductivity, securing a low volume thermal capacity, and applied to an internal combustion engine to have increased durability. The present invention comprises: a ceramic-based binder; and a porous ceramic composite.

Magnesium-calcium material and preparation method thereof

本发明涉及一种镁钙材料及其制备方法。其技术方案是：将60～70wt％的镁钙砂颗粒、20～30wt％的镁钙砂细粉、2～5wt％的磷酸铈和3～6wt％的磷钛酸酯混合，搅拌均匀，压制成形，自然干燥20～30小时；再于110℃条件下干燥8～16小时，然后在1500～1700℃条件下烧成2～5小时，冷却，制得镁钙材料。其中：所述镁钙砂的MgO含量均≥40wt％，镁钙砂颗粒的粒径为0.2～11mm，所述镁钙砂细粉的粒径为3～200μm；所述磷酸铈的粒径为3～200μm；所述磷钛酸脂中的P 2 O 5 含量≥1wt％，TiO 2 的含量≥1wt％。本发明工艺简单、成本低和环境友好，所制备的镁钙材料抗水化能力优异和净化金属熔体效果显著，适合于纯净化冶炼用耐火材料。

A kind of preparation method of magnesia synthetic material

本发明公开一种镁质合成材料的制备方法，包括如下步骤：将轻烧镁钙粉充分细磨，得到轻烧钙镁粉细粉，另外将铁红充分细磨；将得到的细粉与细磨铁红粉进行共磨，在共磨过程中均匀添加活性纳米碳酸钙；向共磨细粉加水，放入碾压机中搅拌轮碾，待搅拌均匀、压起热温度≥40℃；将湿粉加入压球机压密、压球过程制成球坯；将得到的球坯，自然干燥；将得到的干坯放入窑中进行烧制，烧成温度为1600～1700℃，保温2～6小时，得到镁质合成材料。本发明的制备方法可以在相对较低的烧成温度、较短的烧成时间内制得镁质合成料，既有效地降低煤耗、控制生产成本，又保证镁质合成料的充分烧结，提高镁质合成料烧结致密性。

The production method of fused alumina/titanium oxide composite material

本发明涉及一种耐火材料和热喷涂材料的生产方法，具体涉及一种电熔氧化铝/氧化钛复合材料的生产方法。所述的电熔氧化铝/氧化钛复合材料的生产方法，采用高纯度Al 2 O 3 和高纯度TiO 2 作为熔料，进行高温电弧熔化，控制电极与熔料面不接触，电极与熔料面的距离为：0cm＜距离≤2cm，高温电弧熔化后自然冷却形成低碳黑色晶体状熔块，经破碎形成粒度砂。本发明采用电弧为长弧操作，避免电极与氧化粉体接触，避免了碳的引入；生产的氧化铝/氧化钛纯度高，气孔率低，体积密度高，具有较高的高温强度及耐磨度，耐腐蚀、高温体积稳定性好；能在热喷涂行业得到广泛应用，有利于获得更好的热喷涂设备和配件，提高设备和配件的使用寿命。

Finely divided oxide powder and use of the same

Magnesium aluminate spinel reinforced magnesium oxide base foamed ceramic filter and preparation method thereof

本发明公开了一种能在低温下实现烧结的、化学稳定性和抗热震性优异的镁铝尖晶石增强氧化镁基泡沫陶瓷过滤器及其制备方法，制备方法包括：(1)将10％～20％纳米铝溶胶，0.8％～1.5％流变剂，其余为含纳米氧化铝烧结助剂的氧化镁陶瓷粉料进行配料，添加去离子水经球磨混合均匀，然后经真空排气制成固含量为60％～70％的陶瓷浆料；(2)将聚氨酯泡沫塑料模版浸入到上述的陶瓷浆料中，通过辊压机挤压聚氨酯泡沫塑料模版去除多余的浸挂浆料后制成素坯，然后将素坯在加热到80℃～120℃进行烘干；(3)将干燥的素坯放入烧结炉内，升温至1400℃～1600℃温度下进行高温烧结，随炉冷却至室温得到氧化镁基泡沫陶瓷过滤器。

Sintering process for electrical feedthroughs

The invention relates to a process for producing a sintered workpiece, which comprises sintering of a ceramic material at a temperature of at least 1000°C and in an atmosphere, in the case of which the partial pressure of atmospheric air is reduced to less than 10 -6 -times, based on the ambient air at the same temperature under equilibrium conditions.

Sintering process for electrical feedthroughs

Die Erfindung betrifft ein Verfahren zur Herstellung eines gesinterten Werkstücks, welches Sintern eines keramischen Materials bei einer Temperatur von mindestens 1000 °C und in einer Atmosphäre, bei dem der Partialdruck atmosphärischer Luft auf weniger als das 10-6-fache, bezogen auf die Umgebungsluft bei derselben Temperatur unter Gleichgewichtsbedingungen, reduziert wird, umfasst. The invention relates to a method for producing a sintered workpiece, which sinters a ceramic material at a temperature of at least 1000° C. and in an atmosphere in which the partial pressure of atmospheric air is less than 10-6 times that of the ambient air same temperature under equilibrium conditions.

Cured without heating binding agent composition and method of moulding piece production with its use

Изобретение относится к отверждающейся без нагрева композиции связующего, способной смешиваться и отверждаться в условиях без нагрева. Описана отверждающаяся без нагрева композиция связующего, содержащая в качестве ее главных компонентов трифункциональный или тетрафункциональный фенол, несущий одну или две электронодонорные группы на бензольном кольце фенола, сшивающий агент и катализатор, причем у трифункционального или тетрафункционального фенола три или четыре углеродных положения бензольного кольца способны взаимодействовать с сшивающим агентом, где сшивающим агентом является альдегид или ксиленгликоль, и содержание катализатора составляет от примерно 10 -5 до 0,3 молей на моль трифункционального или тетрафункционального фенола. Также описан набор для получения отверждающегося без нагрева связующего (варианты); описан способ получения формованного изделия из фенольной смолы, содержащую указанную выше отверждающуюся без нагрева композицию; формованное изделие из фенольной смолы, получаемое указанным выше способом; способ получения песочной формы для литья, содержащий стадии: (А) смешения формовочного песка, растворителя и указанной выше отверждающейся без нагрева композиции связующего, и (В) литья полученной смеси в формовочную форму и формования и отверждения в условиях без нагревания; песочная форма для литья, получаемая указанным выше способом; способ получения пористого керамического формованного изделия, содержащий стадии: (С) смешения керамического порошка, поверхностно-активного вещества, растворителя, фосфата и указанной выше отверждающейся без нагрева композиции связующего, (D) литья полученной смеси в формовочную форму и формования и отверждения в условиях без нагревания, и (Е) отжига полученного отвержденного изделия при температуре 600-1900°С; пористое керамическое формованное изделие, получаемое указанным выше способом: способ получения керамического формованного изделия, содержащий стадии: (F) смешения керамического порошка, фосфата (или его гидрата ...

Fireproof mass

A kind of method that calcium oxide-based ceramic-mould is prepared by chemical vapor deposition means

本发明公开了一种通过化学气相沉积手段制备氧化钙基陶瓷铸型的方法，属于基于光固化成型技术快速铸造领域。采用的技术方案为：从基体材料氧化钙粉末着手，采用水基凝胶配方，通过在氧化钙粉末表面化学沉积C涂层，防止氧化钙在水基凝胶配方中发生水解，完成浆料的配制。同时，通过对铸型进行化学气相渗透，降低氧化钙基陶瓷铸型的孔隙率，提高铸型的强度，制得完整的氧化钙基陶瓷铸型。本发明针对氧化钙基陶瓷铸型，从陶瓷铸型材料前处理以及铸型强度提高两方面着手，方法设计合理，操作简便，大大提高了铸型制造的效率，适用于实际生产。

Deposition film

고분자재료로 실질적으로 이루어지는 기재와 세라믹으로 실질적으로 이루어지는 증착층을 갖고, 기재는, 증착층을 증착하기 전에, 홀로 애노드 플라즈마 처리기를 사용하여 플라즈마 전처리되어 있는 증착 필름. 가스 배리어성, 플라즈마, 레토르트 처리, 홀로 애노드, 냉각 드럼, 무기 산화물, 금속 알콕시드. The vapor deposition film which has a base material which consists of a polymeric material substantially, and a vapor deposition layer which consists of ceramics, and a base material is plasma preprocessed using an anode plasma processor alone before depositing a vapor deposition layer. Gas barrier properties, plasma, retort treatment, holo anodes, cooling drums, inorganic oxides, metal alkoxides.

Ceramic board for construction and flame retardant veneer panel

Preparation method of calcium carbonate-bismuth oxide composite solid electrolyte ceramic chip

一种碳酸钙‑氧化铋复合固体电解质陶瓷片的制备方法，涉及固体电解质陶瓷材料制备技术领域。利用乙二醇润湿，将碳酸钙和氧化铋进行固相湿法球磨共混复合，得到碳酸钙‑氧化铋复合固体电解质。碳酸钙与氧化铋的复合重量比为4：6。固相湿法球磨共混时间为2小时。本发明制备的复合电解质材料对合成温度要求较低、比较容易烧结成功、成本相比而言比较低，通过SEM图片可以看出，Bi 2 O 3 基的气孔很少，较为容易烧结成功。利用固相湿法球磨共混法成功的制备出了立方结构的掺杂Bi 2 O 3 粉末，基本完成从高温区稳定到低温区。抑制Bi 2 O 3 的晶型发生转变，防止了立方向菱方相变的出现，这就使复合电解质材料能够具有良好的电导率。

Oxide sintered body and method for producing oxide sintered body

【課題】比較的良好な耐プラズマ性を有するとともに、比較的低コストで製造することが可能な酸化物焼結体を提供する。【解決手段】酸化物焼結体であって、導電性マイエナイト化合物を含み、平均結晶粒径が５μｍ～４０μｍの範囲であり、相対密度が９８％以上である、酸化物焼結体。また、酸化物焼結体の製造方法であって、（１）酸化カルシウムと酸化アルミニウムとを、１３：６～１１：８（ＣａＯ：Ａｌ２Ｏ３に換算したモル比）の割合で含む仮焼粉を準備する工程と、（２）前記仮焼粉を含む被処理体を、還元剤とともに容器内に入れ、前記被処理体を５０ｋｇｆ／ｃｍ２以上のプレス圧力で加圧する工程と、（３）前記容器内を減圧した状態で、前記被処理体を１２８０℃～１３３０℃の範囲に保持し、熱処理を実施する工程を有する、製造方法。【選択図】図１

Calx lightweight through hole haydite

本发明公开了一种石灰轻质通孔陶粒，其技术方案的要点是，石灰轻质通孔陶粒由石灰、高粘凹凸棒石粘土、粉状石灰发泡剂、活性白土废渣、漂珠、轻质氧化镁、硫酸亚铁、膨胀珍珠岩和膨胀蛭石组成。将石灰轻质通孔陶粒的配料进行搅拌混合、挤压造粒、烘干、焙烧、保温、筛分后密封包装为石灰轻质通孔陶粒。石灰轻质通孔陶粒具有比表面积大、堆积密度小、吸水率高、透气性能优越、外观造型美观无异味、轻质强度好、微孔和大孔为一体的特点。用于培育或种植各种苗木、花草和蔬菜时，植物的根部将会从石灰轻质通孔陶粒里吸收水或液态肥的营养成分，确保植物生长发育好，成活率高和寿命更长，石灰轻质通孔陶粒适用于配制无土栽培基质和营养土。

Sintered body and use thereof

FIELD: chemistry. ^ SUBSTANCE: invention relates to chemically stable materials, particularly used for lining reaction vessels, reactors, mills, die moulds etc, which are used in making anodes of electrolytic capacitors with solid electrolyte. Described is a sintered body which contains from 30 to 100 mol % NbOx, where 0.5<x<1.5, and up to 70 mol % MgO, characterised by porosity of less than 30 vol. %. The sintered body preferably consists of microstructures which include homogeneous regions rich in niobium superoxide or magnesium oxide with maximum size of 1.5 mcm and preferable maximum size of 1.0 mcm. ^ EFFECT: improved mechanical properties and chemical stability of the material. ^ 8 cl, 1 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 378 226 (13) C2 (51) МПК C04B 35/495 (2006.01) C04B 35/053 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ, ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21), (22) Заявка: 2004129683/03, 14.10.2004 (24) Дата начала отсчета срока действия патента: 14.10.2004 (72) Автор(ы): ШНИТТЕР Кристоф (DE), ВЕТТИНГ Герхард (DE) R U (73) Патентообладатель(и): Х.К. Штарк ГмбХ (DE) (30) Конвенционный приоритет: 14.10.2003 DE 10347702.0 (43) Дата публикации заявки: 27.03.2006 2 3 7 8 2 2 6 (45) Опубликовано: 10.01.2010 Бюл. № 1 Адрес для переписки: 105064, Москва, а/я 88, ООО "Квашнин, Сапельников и партнеры", пат.пов. В.П.Квашнину, рег.№ 4 C 2 C 2 (56) Список документов, цитированных в отчете о поиске: US 6592740 B2, 15.07.2003. US 6416730 B1, 09.07.2002. RU 2002128349 A1, 27.02.2004. DE 19831280 A1, 20.01.2000. GB 1505920 A, 05.04.1978. (57) Реферат: Изобретение относится к химически устойчивым материалам, в частности, применяемым для облицовки реакционных сосудов, реакторов, мельниц, пресс-форм и т.п., которые используют при производстве анодов для электролитических конденсаторов с твердым электролитом. Технический результат изобретения повышение механических свойств и химической устойчивости материала. Описано ...

Sintered body

烧结体，其包含锌、镁和氧作为构成元素，锌相对于锌和镁的总计的原子比[Zn/(Zn+Mg)]为0.20~0.75，镁相对于锌和镁的总计的原子比[Mg/(Zn+Mg)]为0.25~0.80，X射线衍射测定的结果是包含单一的晶体结构。

Fire-proof ceramic product, charge for manufacture of such product, as well as method for manufacture of such product

FIELD: metallurgy. SUBSTANCE: invention relates to a fire-proof ceramic product, which can be used for fire-proof lining of metallurgical industry aggregates, glass-making furnaces and furnaces of non-metallurgical industry. The fire-proof ceramic product has MgO fraction of at least 75% by weight, as well as ceramic bond, while it has a sulfur fraction in the range from 0.01 to 0.20% by weight and has a SiO 2 fraction of less than 1.5%. The product is manufactured by sintering a charge, in which the main component contains one or several of the following raw materials based on magnesium oxide: sintered magnesium oxide, fused magnesium oxide, sintered calcined dolomite or fused calcined dolomite, as well as one or several components containing aluminum oxide, aluminum-magnesium spinel, sintered corundum, fused corundum, calcined alumina, galaxite, hercynite or pleonast. The specified sulfur amount is provided by introducing sulfur-containing compounds into the charge, including crushing the lining of concrete furnaces. EFFECT: obtaining products resistant to hydration without worsening fire-proof properties. 14 cl, 2 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 754 151 C2 (51) МПК C04B 35/04 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C04B 35/443 (2021.05); C04B 35/04 (2021.05); C04B 2235/3206 (2021.05); C04B 2235/448 (2021.05); C04B 2235/726 (2021.05) (21)(22) Заявка: 2019107504, 23.08.2017 23.08.2017 Дата регистрации: 30.08.2021 17.11.2016 EP 16199243.3 (43) Дата публикации заявки: 17.12.2020 Бюл. № 35 (45) Опубликовано: 30.08.2021 Бюл. № 25 (86) Заявка PCT: EP 2017/071200 (23.08.2017) C 2 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 17.06.2019 (56) Список документов, цитированных в отчете о поиске: US 3879208 A1, 22.04.1975. US 5001092 A1, 19.03.1991. DE 1571601 B1, 15.04.1971. RU 2443657 C1, 27.02.2012. JP 1038072 B, 10.08.1989. SU 530014 A1, 30.09.1976. SU 1038321 A1, 30.08. ...

Phase Gradient Nanocomposite Window Fabrication and Method of Fabricating Durable Optical Windows

광학 윈도우가 제공되고, 광학 윈도우는 코어층, 클래딩층, 및 상기 코어층과 클래딩층 사이에 삽입되는 전자기 간섭(EMI) 층을 포함한다. An optical window is provided, the optical window comprising a core layer, a cladding layer, and an electromagnetic interference (EMI) layer interposed between the core layer and the cladding layer.

Patent JPS5123525B1

Preparation of ceramic doughs through coagulation, for green machining

The present invention proposes a mixture comprising a linear copolymer comprising acrylic acid and 2-acrylamido-2-methyl propane sulfonic acid, water and one or more metal oxide ceramic nanoparticles with a mean particle size of up to 100 nanometers, preferably up to 60 nanometers, more preferably within the range between 20 nanometers and 60 nanometers, e.g., 40 nm. The mixture can be used in formation of doughs which are suitable for green machining. Molar ratio between acrylic acid and 2-acrylamido-2-methyl propane sulfonic acid in the copolymer can optionally be within the range between 0.8:1 and 1:0.8. In the mixture, the linear copolymer can be present at a concentration within an optional range between 1 wt.% and 2 wt.% based on total solid content. In the mixture, the one or more metal oxide ceramic nanoparticles can be present at a concentration within an optional range between 60 wt.% and 70 wt.%. The present invention further proposes a method for obtaining such mixture.

Vapor-deposited film

A vapor-deposited film having a substrate consisting essentially of a polymer material and a vapor-deposited layer consisting essentially of a ceramic, the substrate being subjected to plasma pre-treatment using a hollow anode plasma treatment device, prior to vapor deposition of the vapor-deposited layer.

Synthetic dolomite briquette production from dead burned dolomite

Ground dead burned dolomite is mixed with an additive containing 0.1-0.8 wt.% Fe2O3, 0.07-0.3 wt.% SiO2, and 0.5-10.0 wt.% Mg(OH)2 or Ca(OH)2. The mixture is compacted to a density of 2-2.5 g/cm<3>, and then sintered.

Oxygen Steel Fabrication Furnace Liner Refractory Material

Manufacturing process for bricks and highly refractory linings, in dolomite

Transparent optical element - prodn from magnesia - alumina spinel an lithium fluoride by hot-pressure moulding

High temp-resistant optical element transparent in visible and infra-red wave ranges of electromagnetic spectrum, useful as casing-windows for ionised alkali vapour lamps, is produced by heating material of 1 mu particle size, contg. equimolar amounts of MgO and Al203 and evenly mixed with 0.2-4, pref. 2, wt.% powdered LiF, in vacuo to 800-1250 degrees C, and then exerting a pressure of >=980, pref. >1050, kg/cm2 on material for 30-60 min. after its temp. has been raised to 1300-1600 degrees C.

CERAMIZED COMPOSITE MATERIALS WITH HIGH MECHANICAL AND THERMAL RESISTANCE AND THEIR PREPARATION

L'INVENTION CONCERNE DES MATERIAUX COMPOSITES CERAMISES COMPORTANT UN SUBSTRAT FORME DE FIBRES CERAMIQUES TISSABLES A PROPRIETES THERMOMECANIQUES ELEVEES ET UNE MATRICE FORMEE D'UN OXYDE MECANIQUE CHOISI DANS LE GROUPE COMPRENANT LA SILICE, L'OXYDE DE CHROME ET L'OXYDE DE MAGNESIUM, LA COHESION DES PARTICULES D'OXYDE ETANT TELLE QU'ELLE PERMET, SOUS CONTRAINTE, UNE MICROFISSURATION QUI PROGRESSE JUSQU'AU NIVEAU DES FIBRES. THE INVENTION CONCERNS CERAMIC COMPOSITE MATERIALS INCLUDING A SUBSTRATE IN THE FORM OF WEAVABLE CERAMIC FIBERS WITH HIGH THERMOMECHANICAL PROPERTIES AND A MATRIX FORMED BY A MECHANICAL OXIDE CHOSEN FROM THE GROUP INCLUDING SILICA, OXIDE OF CHROME AND OESIDE COHESION OF THE OXIDE PARTICLES BEING SUCH AS IT ALLOWS, UNDER CONSTRAINT, MICROFISSURATION WHICH PROGRESSED UP TO THE FIBER LEVEL.

ALUMINUM-MAGNESIA PRODUCT FOR GASIFIER

Process for the manufacture of lime bricks and rammed earth

Patent FR2163566A1

Fired bricks

Patent FR2077365A1

FINELY DIVIDED OXIDE POWDER.

L'invention concerne une poudre d'oxyde finement divisée, en particulier à base de magnésium et d'aluminium, avec un degré d'hydratation maximal de 10 % en poids, dans laquelle les particules d'oxyde individuelles sont pourvues d'un revêtement mince, empêchant une plus forte hydratation. Le produit est caractérisé par les étapes suivantes: 1.1 préparation d'une suspension aqueuse à partir d'une poudre d'oxyde et d'un agent de revêtement, 1.2 homogénéisation de la suspension, 1.3 ensuite exposition de la suspension à un séchage par pulvérisation, à une température à laquelle le revêtement reste stable. Application à la fabrication de pièces façonnées et de masses céramiques de densité élevée. The invention relates to a finely divided oxide powder, in particular based on magnesium and aluminum, with a maximum degree of hydration of 10% by weight, in which the individual oxide particles are provided with a coating. thin, preventing stronger hydration. The product is characterized by the following steps: 1.1 preparation of an aqueous suspension from an oxide powder and a coating agent, 1.2 homogenization of the suspension, 1.3 then exposure of the suspension to spray drying , at a temperature at which the coating remains stable. Application to the manufacture of shaped parts and ceramic masses of high density.

DIELECTRIC CERAMIC COMPOSITION FOR HIGH FREQUENCY

COMPOSITION DE CERAMIQUE DIELECTRIQUE POUR HAUTES FREQUENCES, EXPRIMEE PAR LA FORMULE GENERALE: XMGO- YALO- ZSIO OU X, Y ET Z SONT DES POURCENTAGES MOLECULAIRES DES CONSTITUANTS RESPECTIFS, XY Z 100, 55 92, 1 Y 15, ET 7 Z 44. LA COMPOSITION PEUT CONTENIR 0,1 A 10,0 EN POIDS DE LIO COMME ADDITIF. LA COMPOSITION A UN GROUPE DE X, Y ET Z TOMBANT DANS UNE ZONE DEFINIE PAR UN POLYGONE ABCD ENTOURE PAR LES POINTS A, B, C ET D SUR LA FIGURE 1, LES GROUPES DE X, Y ET Z AUX SOMMETS A, B, C ET D DU POLYGONE ETANT COMME SUIT: X Y Z A 55 1 44 B 55 15 30 C 78 15 7 D 92 1 7

Tar-bonded dolomite-magnesite bricks

Tar contg. >90% pitch is added to mixt. of dolomite and magnesia-clinker; the material is kneaded and baked at 250-200 degrees C. Bricks obtained have high abrasion-resistance.

Method for producing magnesium aluminate spinels

REFRACTORY WEAR PIECE FOR CONTAINERS CONTAINING FUSION METAL

Pièce d'usure réfractaire, telle que busette d'entrée ou de sortie, plaque coulissante 34 ou plaque de fond 32, d'un organe de fermeture pour récipients contenant du métal en fusion. Au moins la couche superficielle de la zone Z32, Z34 la plus exposée à l'usure est fondue, donc densifiée, par un rayon laser. Refractory wear part, such as inlet or outlet nozzle, slide plate 34 or bottom plate 32, a closure member for containers containing molten metal. At least the surface layer of the zone Z32, Z34 most exposed to wear is melted, and therefore densified, by a laser beam.

Process for the manufacture of refractory castings of fired dolomite, as well as products obtained by the present process or similar process.

Basic castings, refractory, containing chromium

MgO-C Refractory Brick Having High Resistance Against Heating Stress

본 발명은 고열응력 저항성용 마그네시아-카본질 벽돌에 관한 것으로서, 본 발명은 마그네시아 내화재 75~95중량% 및 흑연 5~25중량%로 이루어지는 원료 100중량%에 대하여, 지르콘(ZrO 2 ·SiO 2 ) 및 Ca-Si합금중 선택된 1종 이상으로 이루어지는 첨가물 1~5중량%와, 산화방지제로서 금속 Al, Mg-Al이 단독 또는 복합으로 1~6중량% 혼합된 배합물에 폐놀계 화합물 결합제 5중량%를 첨가하여 이루어지는 것을 특징으로 하는 고열응력 저항성용 마그네시아-카본질 벽돌을 제공한다. The present invention relates to a high thermal stress-resistant magnesia-carbon brick, the present invention relates to zircon (ZrO 2 · SiO 2 ) with respect to 100% by weight of the raw material consisting of 75 to 95% by weight of magnesia refractory material and 5 to 25% by weight graphite And 5% by weight of a phenolic compound binder in a blend of 1 to 5% by weight of an additive consisting of at least one selected from Ca-Si alloys and 1 to 6% by weight of metal Al and Mg-Al as an antioxidant, alone or in combination. It provides a high thermal stress resistance magnesia-carbonaceous brick, characterized in that the addition is made. 이러한 본 발명은 마그네시아-카본질 벽돌에 적정량의 지르콘(ZrO 2 ·SiO 2 ) 및/또는 Ca-Si합금을 첨가하여 벽돌내의 구조적 응력분산 효과와 내산화성을 향상시키고, 지르콘(ZrO 2 ·SiO 2 ) 및/또는 Ca-Si합금의 첨가에 따른 내식성 및 열간강도 저하 등의 부작용을 방지할 수 있도록 Al, Mg-Al 등의 산화방지제를 첨가한 것이다. The present invention adds an appropriate amount of zircon (ZrO 2 · SiO 2 ) and / or Ca-Si alloy to the magnesia-carbon brick to improve the structural stress dispersion effect and oxidation resistance in the brick, and zircon (ZrO 2 · SiO 2 ) And / or antioxidants such as Al and Mg-Al are added to prevent side effects such as corrosion resistance and decrease in hot strength due to addition of Ca-Si alloy.

Patent RU2019107504A3

РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2019 107 504 A (51) МПК C04B 35/04 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2019107504, 23.08.2017 (71) Заявитель(и): РИФРЭКТОРИ ИНТЕЛЛЕКТЧУАЛ ПРОПЕРТИ ГМБХ УНД КО. КГ (AT) Приоритет(ы): (30) Конвенционный приоритет: 17.11.2016 EP 16199243.3 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 17.06.2019 R U (43) Дата публикации заявки: 17.12.2020 Бюл. № 35 (72) Автор(ы): КЛИЧ Михаэль (AT), ГАЙТ Мартин (AT), КАР Фридрих (AT), КЁНИГСХОФЕР Зандра (AT) (86) Заявка PCT: (87) Публикация заявки PCT: WO 2018/091156 (24.05.2018) R U (54) ОГНЕУПОРНОЕ КЕРАМИЧЕСКОЕ ИЗДЕЛИЕ, ШИХТА ДЛЯ ИЗГОТОВЛЕНИЯ ТАКОГО ИЗДЕЛИЯ, А ТАКЖЕ СПОСОБ ИЗГОТОВЛЕНИЯ ТАКОГО ИЗДЕЛИЯ (57) Формула изобретения 1. Огнеупорное керамическое изделие, включающее в себя следующие признаки: изделие имеет керамическую связку, изделие имеет долю MgO по меньшей мере 75% по массе, изделие имеет долю серы в диапазоне от 0,01 до 0,20% по массе. 2. Изделие по п. 1, имеющее долю серы в диапазоне от 0,01 до 0,05% по массе. 3. Изделие по п. 1 или 2, причем изделие имеет долю MgO в диапазоне от 75 до 97% по массе. 4. Изделие по одному из пп. 1-3, причем изделие имеет долю Al2O3 в диапазоне от 1 до 20% по массе. 5. Изделие по одному из пп. 1-4, причем изделие имеет долю СаО в диапазоне от 0,5 до 3,0% по массе. 6. Изделие по одному из пп. 1-5, причем изделие имеет долю SiO2 менее 1,5% по массе. 7. Изделие по одному из пп. 1-6, причем изделие имеет долю Fe2O3 менее 10% по массе. 8. Изделие по одному из пп. 1-7, причем изделие имеет долю Na2O менее 0,5% по массе. 9. Изделие по одному из пп. 1-8, причем изделие имеет долю K2O менее 0,2% по массе. Стр.: 1 A 2 0 1 9 1 0 7 5 0 4 A Адрес для переписки: 105082, Москва, пер. Спартаковский, 2, стр. 1, секция 1, этаж 3, ЕВРОМАРКПАТ 2 0 1 9 1 0 7 5 0 4 EP 2017/071200 (23.08.2017) A 2 0 1 9 1 0 7 5 0 4 R U A 2 0 1 9 1 0 7 5 0 4 R U 10. Изделие по одному из пп. 1-9, причем ...

PROCESS FOR THE MANUFACTURE OF HIGH PERFORMANCE MAGNESIUM ALUMINATE SPINEL PARTS, PARTICULARLY TRANSPARENT PARTS IN THE INFRARED AND VISIBLE FIELD

Refractory composition and method for producing it

Fired bricks

Process for manufacturing refractory bricks of sintered dolomite or of refractory materials behaving in a similar manner

SUBSTRATE FOR A HIGH TEMPERATURE REMOVER CONDUCTIVE AND METHOD OF MANUFACTURE

Comme substrat pour l'application de films minces et de films épais de supraconducteurs à haute température conviennent des monocristaux de Mg0, qui toutefois sont de fabrication coûteuse pour les grandes la surfaces et exigent une température de frittage >= 1650 deg.C. Si à la fine poudre de départ de Mg0 on ajoute comme auxiliaire de frittage du Cu0, de sorte qu'il en résulte un substrat de composition (Mg1-x Cux )0, avec 0,06 =< x =< 0,08, on obtient une poudre de départ, qui peut être frittée à une température de frittage comprise entre 1050 deg.C à < 1350 deg.C et qui n'aggrave pas les propriétés des supraconducteurs du type Bia Srb Cac Cud 0, qui sont fabriqués en tant que couches minces ou couches épaisses suivant le procédé de fusion. La granulométrie moyenne des cristallites du substrat ainsi fabriqué se situe entre 1 mum et 3 mum. Comme matières de départ on utilise une solution aqueuse de Cu(N03 )2 et une suspension de fine poudre Mg(0H)2 dans l'eau. La forme voulue du substrat peut être réalisée par coulée en bande ou coulée en barbotine où coulée par injection ou par pressage uniaxial et isostatique. As a substrate for the application of thin films and thick films of high temperature superconductors are suitable single crystals of Mg0, which however are expensive to manufacture for large areas and require a sintering temperature> = 1650 deg. C. If Cu0 is added to the starting fine powder of Mg0 as a sintering aid, so that a substrate of composition (Mg1-x Cux) 0 results, with 0.06 = <x = <0.08, a starting powder is obtained, which can be sintered at a sintering temperature of between 1050 deg.C to <1350 deg.C and which does not worsen the properties of superconductors of the type Bia Srb Cac Cud 0, which are manufactured in as thin layers or thick layers depending on the fusion process. The average particle size of the crystallites of the substrate thus manufactured is between 1 μm and 3 μm. As starting materials ...

Patent FR1597533A

Process for the manufacture of refractory castings of fired dolomite, as well as products obtained by the present process or similar process.