Wolfram-Verbundmaterial fuer die elektrischen Kontakte in Vakuumschaltvorrichtungen und Verfahren zu seiner Herstellung

CONTACT MATERIAL OF VACUUM INTERRUPTER AND MANUFACTURING PROCESS THEREFOR

Improvements in or relating to electrical contact members

... 534,832. Alloys; annealing. WESTING- HOUSE ELECTRIC INTERNATIONAL CO. Sept. 14,1939, No. 25829. Convention date, Sept. 14, 1938. [Classes 72 and 82 (i)] Electric contact members are made of material consisting of 45-75 per cent. of tungsten or molybdenum powder impregnated with 25-55 per cent. of an alloy of silver with 2-10 per cent. of copper. The material may be made by mixing the refractory metal powder with an organic binder such as shellac and alcohol which is driven off by heating at about 1000‹C. leaving a porous mass which is afterwards impregnated with the molten silver-copper alloy. The contact members may be heat-treated by quenching from 600- 775‹C. and reheating at 175-300‹C, whereby the impregnating alloy is hardened.

A composite metal member suitable for use as an electrical contact

A sintered composite metal body such as an electrical contact is made by unilaterally compacting a metal powder such as W,Re,Mo, or their alloys, sintering the compact so as to retain the density variation from one end of the compact to the other and then impregnating the sintered compact with a molten metal such as Cu, Ag or their alloys. The impregnating metal may also contain Ni, Co, Cr, Zn or Sn. Examples are given of the pressing of a powder mixture containing 98.5-93% W, 1-5% Cu and 0.5-2% Ni, a powder mixture containing 89%W, 10% Cu and 1% Ni, sintering at 1150 DEG -1350 DEG C. in vacuo, hydrogen or an inert gas and impregnation with Cu. In a separate embodiment, particularly for shallow compacts the metal powder may be pressed in several layers at the same pressure, or the first layer is pressed at the highest pressure and each succeeding layer is pressed at lower pressures. In this method the powder layers may be of the same or different metals to produce the infiltrated systems M1 -M2 or M1 -M2 -M3 where M1 is W, Re or Mo; M2 is Cu or Ag and M3 is Ni, Co or Cr.

High temperature material based on tantalum and/or niobium carbide

A high temperature material has a carbide phase based on niobium and/or tantalum carbide and a metal phase based on tungsten and/or molybdenum. The atomic percentages of the constituents are such that (a) is between 0 and 1, (b) is between 0 and 1, (c) C is between 5 and 40 and Ta + Nb is between U and V where U = 5.4 - 4.4 a - 5.15b + 0.94c + 5.15ab - 0.04 ac + 0.21 bc - 0.11 abc V = 56 - 5a - 37b + 5ab + 0.15 ac + 0.9 bc - 0.3 abc. Up to 90 mol per cent of the niobium or tantalum may be replaced by hafnium, zirconium or titanium or mixtures thereof. The carbide phase may also include up to 40 mol per cent tungsten and/or molybdenum carbide and the metal phase may include up to 60 at. per cent niobium and/or up to 30 at. per cent tantalum. Up to 5% by weight or iron group metals may be included. The material may be produced by pressing a powder including an iron group metal and vacuum sintering the compact e.g. at 1530-1650 DEG C. Alternatively ...

WOLFRAMUND MOLYBDENUM CONNECTIONS AND YOUR USE FOR THE CHEMICAL VAPOUR DEPOSITION (CVD)

SPRAYING POWDER AND PROCEDURE FOR ITS PRODUCTION

SPRAY POWDER, THERMAL SPRAYING PROCESS USING IT, AND SPRAYED COATING

A spray powder which has a particle size of from 6 to 63 .mu.m and which comprises from 75 to 95 wt% of a ceramic phase made of a WC powder and at least one chromium carbide powder selected from the group consisting of Cr3C2, Cr7C3 and Cr23C6, and from 5 to 25 wt% of a metal phase made of a Ni or Ni-based alloy powder, wherein the mean particle size of primary particles of the WC powder constituting the ceramic phase is from 5 to 20 .mu.m, and the mean particle size of primary particles of the chromium carbide powder is from 1 to 10 .mu.m.

SPRAY POWDER, THERMAL SPRAYING PROCESS USING IT, AND SPRAYED COATING

A spray powder which has a particle size of from 6 to 63 µm and which comprises from 75 to 95 wt% of a ceramic phase made of a WC powder and at least one chromium carbide powder selected from the group consisting of Cr3C2, Cr7C3 and Cr23C6, and from 5 to 25 wt% of a metal phase made of a Ni or Ni-based alloy powder, wherein the mean particle size of primary particles of the WC powder constituting the ceramic phase is from 5 to 20 µm, and the mean particle size of primary particles of the chromium carbide powder is from 1 to 10 µm.

CONTACT MATERIAL OF VACUUM INTERRUPTER AND MANUFACTURING PROCESS THEREFOR

LOW-FRICTION SURFACE COATINGS AND METHODS FOR PRODUCING SAME

A coated article system includes a substrate and a surface coating on the substrate. The surface coating is formed by depositing individual particles of a composite metal powder with sufficient energy to cause the composite metal powder to bond with the substrate and form the surface coating. The composite metal powder includes a substantially homogeneous dispersion of molybdenum and molybdenum disulfide sub-particles that are fused together to form the individual particles of the composite metal powder.

METALLIZED CERAMIC SUBSTRATE HAVING SMOOTH PLATING LAYER AND METHOD FOR PRODUCING THE SAME

A metallized ceramic substrate having a smooth plating layer, comprising a ceramic substrate comprising aluminum nitride as a main component; a tungsten- and/or molybdenum-based metallized layer formed on at least one face of the ceramic substrate and a nickel-based plating layer which is formed on the metallized layer and has a thickness of not greater than 2 .mu.m and a surface roughness (Ra) of not greater than 2 .mu.m. In another aspect, the plating layer may be constituted of a first nickel-based plating layer and a second gold-based plating layer in which the first plating layer and the second plating layer have a thickness of not greater than 2 .mu.m and a thickness of not greater than 1 .mu.m, respectively, and the surface roughness (Ra) of the second layer should be 2 .mu.m or less. These metallized substrates are produced by applying a metallizing paste of W and/or Mo onto a green A1N ceramic substrate, flattening, firing and forming the foregoing plating layer or layers.

Halbleiteranordnung mit einer Sperrschicht, welche einen Körper aus Germanium oder Silizium enthält, insbesondere Kristalldiode oder Transistor

Verfahren zur Herstellung eines Verbundmetalls

Verfahren zur Herstellung eines Verbundmetalls

Durchdringungsverbundmetall mit schichtweise verschiedener Zusammensetzung

Wolframcarbid enthaltender Sinterhartmetallkörper

Arc resistant contact material for high volt

Arc resistant contact material for high voltage power breakers.. Is comprised a penetration bonded composition of a copper impregnated sintered skeleton structure of tungsten-copper-nickel containing by weight 1/10% copper, 0.01/0.2% nickel remainder tungsten. The composition being of density 11.0/13.0 g/cm3.

Verbundmaterial

Discharge surface treating method comprises generating a pulsating discharge between an object to be surface treated and a discharge electrode containing a corrosion resistant material, e.g. chromium, in a working fluid

A pulsating discharge is generated between an object to be surface treated and a discharge electrode containing a corrosion resistant material, e.g. chromium, in a working fluid. The electrode wear fused substance of the discharge electrode produced by the energy of pulsating discharge is deposited on the surface of the object and a coating exhibiting corrosion resistance is formed on the surface of the object.

Electrode system barrier layer

METHODS FOR THE IMPLEMENTATION OF NANOCRYSTALLINE AND AMORPHOUS METALS AND ALLOYS AS COATINGS

Methods for the use of nanocrystalline or amorphous metals or alloys as coatings with industrial processes are provided. Three, specific, such methods have been detailed. One of the preferred embodiments provides a method for the high volume electrodeposition of many components with a nanocrystalline or amorphous metal or alloy, and the components produced thereby. Another preferred embodiment provides a method for application of a nanocrystalline or amorphous coatings in a continuous electrodeposition process and the product produced thereby. Another of the preferred embodiments of the present invention provides a method for reworking and/or rebuilding components and the components produced thereby.

THERMALLY APPLIED COATING FOR PISTON RINGS, CONSISTING OF MECHANICALLY ALLOYED POWDERS

The invention relates to a wear-resistant coating used for bearing surfaces and flanks of piston rings in internal combustion engines. The wear-resistant inventive coating is obtained by mechanically alloying powders which form a metallic matrix with hard material dispersoids and lubricant material dispersoids. The coating is then thermally applied to the workpieces, especially by means of high velocity oxygen fuel spraying (HVOF). The workpieces coated are bearing surfaces and parts of flanks pertaining to piston rings in internal combustion engines.

Contact material for vacuum interrupter and method for producing the same

A contact material for a vacuum interrupter including, a conductive component including at least Cu, and an arc-proof component including at least one selected from the group consisting of carbides of W, Zr, Hf, V and Ti. An amount of the conductive component in the contact material is 40-50 vol %, an amount of the arc-proof component in the contact material is 50-60 vol %, and a grain size of the arc-proof component is 3 mu m or less. A total amount of a sintering activator including at least one selected from the group consisting of Co, Fe and Ni melted in the conductive component is 0.1% or less of the amount of the conductive component.

Spray powder, thermal spraying process using it, and sprayed coating

A spray powder which has a particle size of from 6 to 63 mum and which comprises from 75 to 95 wt % of a ceramic phase made of a WC powder and at least one chromium carbide powder selected from the group consisting of Cr3C2, Cr7C3 and Cr23C6, and from 5 to 25 wt % of a metal phase made of a Ni or Ni-based alloy powder, wherein the mean particle size of primary particles of the WC powder constituting the ceramic phase is from 5 to 20 mum, and the mean particle size of primary particles of the chromium carbide powder is from 1 to 10 mum.

Swash-plate of swash-plate type compressor

The seizure resistance of an Al-based flame-sprayed layer formed on the swash plate of a swash-plate type compressor is increased to such a level comparable to that of a flame-sprayed bronze layer. The Al-based flame-sprayed layer of the present invention contains: from 12 to 60% of Si and granular Si particles dispersed in the matrix thereof, and at least one dispersing phase of graphite carbon, amorphous carbon and carbon, the crystallizing degree of which is between the graphite carbon and amorphous carbon, and MoS2.

Hartgesinterter Presskörper für Werkzeuge.

Thermal spray membrane contact material, contact member and contact part, and apparatuses to which they are applied

BEARINGS

Improvements in and relating to electric discharge devices

Porous refractory bodies of metals such as tungsten, molybdenum, tantalum and the like are exposed to alkaline-earth metals, particularly barium, in the molten state or as a vapour. The porous bodies are produced by pressing metal powders, and their porosity varied by a sintering treatment. The alkaline-earth metal permeates the body and the mixture is then completed by a heat treatment. Such bodies can be worked up mechanically if the barium content is not too great.ALSO:Alloys are produced by exposing porous refractory metal bodies to alkaline-earth metals, particularly barium, in the molten state or as a vapour. The porous bodies are produced by pressing metal powders, and their porosity varied by a sintering treatment to produce alloys with different alkaline-earth metal contents. The alkaline-earth metal is stated to permeate the porous body after which a heat treatment transforms the mixture into a homogeneous alloy. Alloys of barium with nickel or platinum having a barium content ...

Penetration compound metal with schichtweise different composition, in particular for high-duty electrical contacts

ROENTGENROEHREN ROTATING ANODE

SPRAY POWDER AND METHOD FOR ITS PRODUCTION

A spray powder to be used for forming a coating, which comprises from 80 to 97 wt%, based on the total weight, of a cermet powder and from 3 to 20 wt%, based on the total weight, of a metal powder, wherein the metal powder comprises Cr and Ni in a total amount of at least 90 wt%, based on the total weight of the metal powder, and the content of Cr is from 0 to 55 wt%, based on the total weight of the metal powder.

LOW-FRICTION SURFACE COATINGS AND METHODS FOR PRODUCING SAME

A coated article system includes a substrate and a surface coating on the substrate. The surface coating is formed by depositing individual particles of a composite metal powder with sufficient energy to cause the composite metal powder to bond with the substrate and form the surface coating. The composite metal powder includes a substantially homogeneous dispersion of molybdenum and molybdenum disulfide sub-particles that are fused together to form the individual particles of the composite metal powder.

Material for parts of friction operating in lubricated medium, and its process of obtaining

Ce matériau comporte des domaines distincts, de dimension maximale comprise entre 60 et 500 micromètres d'au moins deux substances ayant des duretés et des coefficients de frottement différents, la plus dure ayant le plus grand coefficient de frottement. De préférence, il se présente comme formé de grains de matière dure à coefficient de frottement élevé, ces grains étant liés entre eux par un matériau liant qui remplit la majeure partie des espaces intergranulaires, le reste de ces espaces constituant des porosités. Avantageusement, si le lubrifiant contient un additif du type borate ou sulfate, la matière dure est un acier passivable contenant un ou plusieurs des éléments suivants: Cr, Mo, V, W, Si, et la matière moins dure est de l'acier faiblement allié. This material comprises distinct domains, with a maximum dimension of between 60 and 500 micrometers, of at least two substances having different hardnesses and coefficients of friction, the harder having the greater coefficient of friction. Preferably, it is presented as formed of grains of hard material with a high coefficient of friction, these grains being linked together by a binder material which fills the major part of the intergranular spaces, the remainder of these spaces constituting porosities. Advantageously, if the lubricant contains an additive of the borate or sulfate type, the hard material is a passivable steel containing one or more of the following elements: Cr, Mo, V, W, Si, and the softer material is weak steel. ally.

Sintered compound material for electrical contacts and method for its production

AgCdO based contact elements are replaced in contactors and small circuit breakers with CdO-less type elements which exhibit little burn-off in the arc, a low welding force and minimal heating when carrying continuous current. However, known AgSnO2 contact materials do not have optimum values in all operationally important properties. In these contact materials a more firmly adhering oxide layer occurs as compared with AgCdO. The invention relates to a sintered compound material for electrical contacts, consisting of AgSnO2Bi2O3CuO and containing at least one other metal oxide additive which sublimes below the melting temperature of silver. The SnO2, Bi2O3 and CuO are globularly precipitated in silver material structure zones having a maximum diameter of 200 mu m, and the metal oxide additive is distributed on the surfaces of the boundary regions of these microscopic silver zones.

Coating containing dimolybdenum carbide precipitates and a self-fluxing NiCrFeBSi alloy

A thermal spray powder for producing high hardness, low friction, wear resistant coatings on friction surfaces, comprising a blend of an agglomerated molybdenum/dimolybdenum carbide powder and a self-fluxing NiCrFeBSi alloy powder.

Metallisiertes Keramiksubstrat mit glatter Plattierungsschicht und Herstellungsverfahren

Verschleißfester Überzug zum Schutz einer Oberfläche,Verfahren zum Schützen einer Oberfläche und beschichteter Kolbenring

Verschleißfester Überzug zum Schutz einer Oberfläche, wobei der verschleißfeste Überzug mittels eines Auftrags eines Pulvers mit dem HVOF (high velocity oyxgen-fuel) Verfahren aufgebracht wird, und wobei das Pulver eine Mischung aus folgendem aufweist: 28 Gew.-% einer Nickel-Chrom-Legierung; 42 Gew.-% Chromcarbid; und 30 Gew.-% Molybdän.

SINTERED ALLOY

Improvements in and relating to powder metallurgy

... 1,130,995. Sintered tungsten - copper - titanium composites. MALLORY METALLURGICAL PRODUCTS Ltd. March 7, 1967 [March 11, 1966], No. 10586/67. Heading C7D. An infiltrated W-Cu-Ti composite suitable for use as a contact material in vacuum and electrical switching devices is made by infiltrating a W powder compact with a Cu-Ti alloy. A W powder, particle size 1 to 10 microns, is compacted at 20 to 35 t. s. i. and may optionally be presintered at 1250‹C. in hydrogen prior to infiltration with a Cu-Ti alloy containing 0À05 to 0.5% Ti, alternatively the green W compact may be infiltrated. Infiltration is carried out in a vacuum of 10-5 Torrat 1200‹-1450‹C. for 20 to 60 minutes. In an alternative embodiment the W may be coated with Ti either by electrolysis or vapour deposition and then infiltrated with Cu, the amount of Ti coating being sufficient to produce a Cu-Ti alloy containing 0.05 to 0.5% Ti.

Sintered iron-molybdenum-copper material

A sintered powdered metal matrix for a friction material comprises by weight 2,5%-82,5% copper. 10%-90% iron; 1%-50% molybdenum and 1%-28,5% of at least one of the group antimony, bismuth, cadmium and lead, some of the iron and molybdenum alloying to form a single phase. Graphite and inorganic non metallic friction materials such as calcined kyanite are added to the matrix composition, the constituent powders of particle size 80 mesh to 300 mesh being mixed together, compacted at 100,000 p.s.i. and sintered at 1700 DEG F. to 1800 DEG F. in a reducing atmosphere such as hydrogen or cracked ammonia. In the examples given the sintered material contains 10% graphite and 20% calcined kyanite. Specifications 740,820 and 865,143 are referred to.

High temperature material

POLYCRYSTALLINE DIAMOND CUTTING ELEMENT

A polycrystalline-diamond cutting clement (50) is disclosed for a drill bit of a downhole tool. The cutting element (50) includes a substrate (24) and a diamond table bonded to the substrate (24). The diamond table includes a diamond filler with at least one leached polycrystalline diamond segment (54) packed therein along at least one working surface thereof. The cutting element (50) may be formed by positioning the diamond table on the substrate (24) and bonding the diamond table onto the substrate (24) such that the polycrystalline diamond segment (54) is positioned along at least one working surface of the diamond table. A spark plasma sintering or double press operation may be used to bond the diamond table onto the substrate (24).

DISCHARGE SURFACE TREATING METHOD AND ELECTRODE FOR DISCHARGE SURFACE TREATMENT

A pulsating discharge is generated between an object to be surface treated and a discharge electrode containing a corrosion resistant material, e.g., chromium, in a working fluid. The electrode wear fused substance of the discharge electrode produced by the energy of pulsating discharge is deposited on the surface of the object and a coating exhibiting corrosion resistance is formed on the surface of the object. © KIPO & WIPO 2007 ...

METALLIZED CERAMIC SUBSTRATE HAVING SMOOTH PLATING LAYER AND METHOD FOR PRODUCING THE SAME

THERMALLY APPLIED COATING FOR PISTON RINGS, CONSISTING OF MECHANICALLY ALLOYED POWDERS

Spray powder and method for its production

MULTILAYER COMPOSITE SLIDING MATERIAL EXCELLENT IN SEIZING RESISTANCE

PURPOSE: To manufacture a multilayer composite sliding material excellent in seizing resistance by forming a copper-adhering layer contg. Sn, Pb and P on a steel sheet under specified conditions and, furthermore, forming a copper alloy layer contg. Sn and MoS2 thereon under specified conditions. CONSTITUTION: On a steel sheet or a steel sheet applied with surface plating by copper or the like, an adhesive layer of 0.05 to 0.5mm thickness is formed by powder sintering of, by weight, 5 to 16% Sn, zero to 15% Pb and zero to 0.5% P, and the balance Cu. Furthermore, on this surface, an alloy layer of 0.1 to 1.0mm thickness is formed by powder sintering of 5 to 16% Sn and 1 to 2% MoS2, and the balance Cu. In this way, the objective multilayer composite sliding material showing excellent seizing resistance even in a boundary lubricant state with severe lubricant conditions can be obtd. COPYRIGHT: (C)1993,JPO&Japio ...

Polycrystalline diamond cutting element

A polycrystalline-diamond cutting clement (50) is disclosed for a drill bit of a downhole tool. The cutting element (50) includes a substrate (24) and a diamond table bonded to the substrate (24). The diamond table includes a diamond filler with at least one leached polycrystalline diamond segment (54) packed therein along at least one working surface thereof. The cutting element (50) may be formed by positioning the diamond table on the substrate (24) and bonding the diamond table onto the substrate (24) such that the polycrystalline diamond segment (54) is positioned along at least one working surface of the diamond table. A spark plasma sintering or double press operation may be used to bond the diamond table onto the substrate (24).

An improved metal composition

Electrical contacts and welding electrodes are made from an alloy containing by weight W 32 to 36%, Mo 32 to 36%, Cu and impurities balance. In one example described the raw materials are 41% by weight each of Mo and W powders not over 5 microns in Fisher average particle size, and 18% by weight of Cu powder of minus 100 mesh. These are blended by ball milling, a binder added, and compacts of desired shape obtained by conventional pressing techniques. The compacts are then sintered at 1300-1350 DEG C. for 6-20 minutes in an inert or reducing atmosphere, followed by infiltration of the balance of the Cu at 1200-1275 DEG C. In a second example, the correct amounts of W, Mo and Cu to yield the desired composition are blended and fritted at 1100-1200 DEG C. into slightly sintered cakes which are then broken up, screened and the powder pressed and sintered in the range 1350-1425 DEG C. for not less than 30 minutes.

Improvements in or relating to semi-conductor devices

... 772,583. Semi-conductor devices. PHILIPS ELECTRICAL INDUSTRIES, Ltd. June 28, 1955 [July 1, 1954], No. 18648/55. Class 37. A semi-conductor device such as a transistor or crystal diode comprises germanium or silicon soldered to a carrier plate which consists of chromium, molybdenum or tungsten. The plates may be porous and obtained by sintering powder of the specified metal. The coefficients of expansion of the carrier plate and semiconductor may be matched and the thermal conductivity of the carrier plate improved by varying the volume of the pores and filling the pores with gold, silver or copper with or without a very small amount of germanium or silicon. In the crystal diode shown a germanium wafer 4 is soldered at 3 to a molybdenum plate 1 having a gold layer 2. The plate 1 is silver-soldered at 6 to a copper, aluminium, nickel or iron cooling plate 5. The plate 1 consists of sintered tungsten whose pores are filled with silver or other solder 3. The thin gold layer 2 enhances the ...

Improvements in electric contacts

537,866. Alloys. MALLORY METALLURGICAL PRODUCTS; Ltd. Jan. 5, 1940, No. 326. Convention date, Feb. 24, 1939. [A Specification was laid open to inspection under Sect. 91 of the Acts, July 6, 1940.] [Class 82 (i)] An alloy for electric contacts consists of silver, nickel, and tungsten, or of silver, nickel, tungsten, and molybdenum, with or without tin, zinc, cadmium, copper, manganese, and silicon as minor constituents. The silver content is preferably at least 60 per cent. and the nickel may be 10-40 per cent..and the tungsten or tungsten and molybdenum 1-40 per cent. Specification 537,865 is referred to. The Specification as open to inspection under Sect. 91 comprises also the subject-matter of of Specification 537,865. This subject-matter does not appear in the Specification as accepted.

SINTER COMPOSITE MATERIAL FOR ELECTRICAL CONTACTS AND PROCEDURE FOR ITS PRODUCTION.

ROENTGENROEHREN-DREHANODE

With cobalt bound, tungsten carbide of containing sintered hardmetal bodies, procedures for its production and procedures for the production of a tungsten carbide powder for the sintered compact

SPRAYING POWDER, PROCEDURE FOR THERMAL SQUIRTING AND SPRAYED COATING

POLYCRYSTALLINE DIAMOND CUTTING ELEMENT

... ²²A polycrystalline-diamond cutting clement (50) is disclosed for a drill bit of ²a downhole tool. The cutting element ²(50) includes a substrate (24) and a diamond table bonded to the substrate ²(24). The diamond table includes a diamond filler with ²at least one leached polycrystalline diamond segment (54) packed therein along ²at least one working surface thereof. The cutting ²element (50) may be formed by positioning the diamond table on the substrate ²(24) and bonding the diamond table onto the ²substrate (24) such that the polycrystalline diamond segment (54) is ²positioned along at least one working surface of the diamond ²table. A spark plasma sintering or double press operation may be used to bond ²the diamond table onto the substrate (24).² ...

Material for friction components operating in medium lubricated, and its process of manufacture.

Lining unit

The present invention relates to lining units used to protect surfaces exposed to intensive wear by solids, gases and liquids. The lining unit is a metallic shell formed with a pipe of rectangular cross section, containing a metallic plate and a wear-resistant composite material, the shell, the metallic plate and the composite material being diffusion-joined one to another.

SINTERED FILTER HAVING STRAIGHT HOLES THERETHROUGH

Sprayed-coated sliding material used for moving components, consists of molybdenum metal phase, or molybdenum metal phase and metal phase containing zinc, iron, nickel, cobalt, chromium and/or copper, and alloy phase

Sprayed-coated sliding material (28) consists of molybdenum metal phase or molybdenum metal phase (10 volume% or more) and metal phase containing zinc, iron, nickel, cobalt, chromium and/or copper, and an alloy phase. The sliding material further contains carbide of tungsten, titanium, chromium, molybdenum and/or vanadium, oxide, nitride or intermetallic compounds such as molybdenum-iron, aluminum-iron, titanium-iron, and titanium nitride, chromium nitride, silicon nitride (Si 3N 4), nickel oxide, copper oxide (Cu 2O), cobalt oxide, titania, silica and/or alumina. The sliding material further contains phosphorous, carbon, tin, copper, antimony, and magnesium, and lubricant such as calcium fluoride and molybdenum sulfide. Independent claims are included for the following: (1) sliding material; (2) moving component; (3) coupling device; (4) turbocharger apparatus; (5) valve apparatus for engines; (6) hydraulic piston pump and/or hydraulic piston motor apparatus; (7) wedge apparatus for base rock crushing; and (8) floating-seal apparatus.

BEI HOHEN TEMPERATUREN VERSCHLEISSFESTE SINTERLEGIERUNG

Thermisch aufgetragene Beschichtung für Kolbenringe aus mechanisch legierten Pulvern

Die vorliegende Erfindung betrifft eine verschleißfeste Beschichtung zur Verwendung für Laufflächen und Flanken von Kolbenringen in Verbrennungskraftmaschinen. Die erfindungsgemäße verschleißfeste Beschichtung wird erhalten durch mechanisches Legieren von Pulvern, die eine metallische Matrix bilden mit Hart- sowie Gleitstoffdispersoiden. Die Beschichtung wird thermisch dann auf die Werkstücke, inbesondere mittels Hochgeschwindigkeits-Flammspritzen (HVOF), aufgetragen. Bei den Werkstücken handelt es sich um die Laufflächen und Flankenteile von Kolbenringen in Verbrennungskraftmaschinen.

Thermal spray material

A thermal spray material containing a Mo metal phase is defined. The Mo metal phase can be at least 5 vol % and may also have an alloy phase containing one or more elements selected from the group consisting of Fe, Ni, Co, Cr, Cu and Zn. Carbides selected from the group including W, Ti, Cr, Mo and V may also be added in an amount of 10-50 vol %; nitrides, oxides and hard intermetallics may also be used. The thermal spray material may be used in a number of applications including: hydraulic pumps, bearing surfaces, valve apparatus, floating seal apparatus and rock wedge crushing apparatus.

PROCESS FOR THE SURFACE TREATMENT OF INORGANIC FIBERS FOR REINFORCING TITANIUM OR NICKEL

CONTACT MATERIAL OF VACUUM INTERRUPTER AND MANUFACTURING PROCESS THEREFOR

ABSTRACT Contact materials of a vacuum interrupter and producing process therefor are disclosed. The contact materials provide a contact which is much high in relatively large current and small lagging and leading current interrupting capabilities and dielectric strength while a little in an anti-welding capability down. The contact materials are composed of between 20 and 70 weight % copper, between 5 and 70 weight % molybdenum and between 5 and 70 weight % chromium. The contact material is produced by diffusion bonding a mixture of molybdenum powder and chromium powder into a porous matrix and infiltrating the matrix with copper. Alternatively, the contact materials may be produced by sintering a mixture of three metal powders.

用于真空断路器的触头材料

... 本发明涉及一种真空断路器的触头材料，其包括：含有Ag和Cu的导体组分，和含有至少一种选自由W、Zr、Hf、V和Ti的碳化物组成的组中的一种灭弧组分；所述触头材料中的导体组分的量为40-50体积％，所述触头材料中灭弧组分的量为50-60体积％，灭弧组分的粒径为3μm或更少；包括至少一种熔化在导体组分中的、选自由Co、Fe和Ni组成的组中的一种烧结加速剂元素的总量为导体组分的0.1％或更少，而且所述银的量为所述导体组分的30重量％或更低。 ...

PROCESS FOR THE SURFACE TREATMENT INORGANIC FIBRE FOR THE REINFORCEMENT OF TITANIUM OR NICKEL

Harter Schneidwerkzeug-Sinterkörper

Improvements in ball or roller bearings

... In a ball or roller bearing of the rolling-contact type comprising balls 10 and raceways 11, 12, a spacer 13 therefor may be an alloy of 99.5% Mo and 0.5% Ti. Specification 901,176 is referred to.

Bearings.

A multi-layer composite sliding material with improved seizure resistance has a steel plate optionally plated with copper; a bonding layer having a thickness of from 0.05 to 0.5 mm formed on the steel plate and made from a sintered powder material consisting of from 5 to 16% tin, from 0 to 15% lead, from 0 to 0.5% phosphorus and the balance being essentially copper; and an alloy layer having a thickness of from 0.1 to 1.0 mm formed on the bonding layer from a sintered powder material consisting of from 5 to 16% tin, from 1 to 12% MoS2 and the balance comprising copper. In preferred forms the alloy layer has no more than 20% lead, no more than 1% phosphorus and no more than 12% nickel. The MoS2 may be in the form of particles coated with copper and/or nickel.

Polycrystalline diamond cutting element

Contact for vacuum interrupter

A contact for a vacuum interrupter has excellent characteristics of high withstand voltage, low melt bonding property, large current durability and low chopping current and is prepared by uniformly distributing, in a copper matrix, two kinds of high melting point metal powders having a melting point of higher than 1450 DEG C. which have different particle diameters of (1) 80-300 mu m and (2) less than 30 mu m. The low chopping current characteristic is imparted by incorporating more than 10 wt. % of the high melting point metal powder. The high melting point metal powder can be selected from the group consisting of Cr, W, Mo, Ir and Co.

Contact for vacuum interrupter

A contact for a vacuum interrupter has excellent characteristics of high withstand voltage, large current durability and low chopping current and is prepared by infiltrating copper into a skeleton obtained by sintering a specific tungsten powder having an average diameter of less than 1 mu m. The skeleton is preferably prepared by a vacuum sintering process and the copper is infiltrating into the skeleton in hydrogen atmosphere or in vacuum.

CONTACT FOR VACUUM INTERRUPTER

SINTERED FILTER HAVING STRAIGHT HOLES THERETHROUGH AND METHOD OF MAKING SAME

BRAZE MATERIAL FOR JOINING CERAMIC AND METAL SURFACES AND JOINED CERAMIC TO METAL ARTICLE

An improved active metal braze filler material is provided in which the coefficient of thermal expansion of the braze filler is more closely matched with that of the ceramic and metal, or two ceramics, to provide ceramic to metal, or ceramic to ceramic, sealed joints and articles which can withstand both high temperatures and repeated thermal cycling without failing. The braze filler material comprises a mixture of a material, preferably in the form of a powder, selected from the group consisting of molybdenum, tungsten, silicon carbide and mixtures thereof, and an active metal filler material selected from the group consisting of alloys or mixtures of nickel and titanium, alloys or mixtures of nickel and zirconium, alloys or mixtures of nickel, titanium, and copper, alloys or mixtures of nickel, titanium, and zirconium, alloys or mixtures of niobium and nickel, alloys or mixtures of niobium and zirconium, alloys or mixtures of niobium and titanium, alloys or mixtures of niobium, titanium ...

SWASH PLATE OF SWASH PLATE COMPRESSOR

A swash plate for a swash plate compressor, wherein aluminum alloy containing 12 to 60 % of Si and, as required, 0.1 to 30 % of Sn is sprayed onto the iron or aluminum base plate of the swash plate compressor to form a seizure-resisting and abrasion-resisting surface layer dispersed with granulated Si. © KIPO & WIPO 2007 ...

RESISTANT COVERING TO THE CONSUMING, RING OF SEGMENT AND METHOD TO PROTECT SURFACE

Rotatable anode for an X-ray tube composed of a coated, porous body

A rotatable anode for an X-ray tube comprising a body composed of a porous, difficult to melt material enclosed in a sealed fashion within an enveloping layer of a difficult to melt material, characterized by the porous body being of a material having a good thermal conductivity and a good thermal capacity and said porous body having its pores filled with a material having a good thermal conductance and being a good conductor of heat. The porous body is preferably a sintered porous body. The material of the porous body as well as the material of the enclosing layer are selected from a group consisting of tungsten, molybdenum, niobium, chromium, vanadium, titanium, carbon, alloys of these materials, and compounds of these materials. The filler material is preferably a metal selected from a group consisting of silver, gold, copper, aluminum, and alloys of these elements containing not less than a predominant proportion of at least one of these metals. The enveloping layer may be in the form ...

Perforated plates for cryogenic regenerators and method of fabrication

Perforated plates (10) having very small holes (14) with a uniform diameter throughout the plate thickness are prepared by a "wire drawing" process in which a billet of sacrificial metal is disposed in an extrusion can of the plate metal, and the can is extruded and restacked repeatedly, converting the billet to a wire of the desired hole diameter. At final size, the rod is then sliced into wafers, and the wires are removed by selective etching. This process is useful for plate metals of interest for high performance regenerator applications, in particular, copper, niobium, molybdenum, erbium, and other rare earth metals. Er3Ni, which has uniquely favorable thermophysical properties for such applications, may be incorporated in regions of the plates by providing extrusion cans (20) containing erbium and nickel metals in a stacked array (53) with extrusion cans of the plate metal, which may be copper. The array is heated to convert the erbium and nickel metals to Er3Ni. Perforated plates ...

Welding auxiliary material

Wolfram- und Molybdän-Verbindungen und ihre Verwendung für die Chemical Vapour Deposition (CVD)

Die vorliegende Erfindung betrifft spezielle, neue Wolfram- und Molybdänverbindungen, DOLLAR F1 deren Verwendung zur Abscheidung wolfram- bzw. molybdänhaltiger Schichten mittels Chemical Vapor Deposition sowie die gemäß diesem Verfahren hergestellten wolfram- bzw. molybdänhaltigen Schichten.

SINTERED ALLOY FOR VALVE SEAT

SINTERED FILTER HAVING STRAIGHT HOLES THERETHROUGH AND METHOD OF MAKING SAME

Improvements with the metallurgy of the powders

NOVEL TUNGSTEN AND MOLYBDENUM COMPOUNDS NOT REQUIRING LITHIUM ALKYL OR AMIDE DURING SYNTHESIS THEREOF AND CAPABLE OF PREVENTING UNDESIRABLE INCORPORATION OF CARBON INTO SUBSTRATE COATING, AND METHOD FOR DEPOSITING TUNGSTEN-CONTAINING OR MOLYBDENUM-CONTAINING LAYER THROUGH CHEMICAL VAPOR DEPOSITION

PURPOSE: A novel tungsten or molybdenum containing compound is provided to be prepared without requiring expensive lithium alkyls or amides, reduce the risk of undesirable incorporation of carbon into the substrate coating due to the introduction of a DAD ligand as a CVD-suitable leaving group for W(III) or Mo(III) layers, and be able to specifically change the layer composition in the CVD in combination with N starting materials. CONSTITUTION: The compound is represented by the formula(1), wherein M is W or Mo, each R^1 and R^2 is independently unsubstituted or substituted C1-12 alkyl, unsubstituted or substituted C5-12 cycloalkyl, unsubstituted or substituted C6-10 aryl, 1-alkenyl, 2-alkenyl, 3-alkenyl, triorganosilyl -SiR3 or amino NR2(wherein R is C1-4 alkyl), each R^3 and R^4 is independently unsubstituted or substituted C1-8 alkyl radical, unsubstituted or substituted C5-10 cycloalkyl, unsubstituted or substituted C6-14 aryl, SiR3 or NR2, and each R^5 and R^6 is independently H or ...

Welding auxiliary material

An improved welding auxiliary material for producing welded joints between refractory metal parts of high-wattage electric light sources is described. The characteristic feature of the invention is that the welding auxiliary material has a porous structure surface layer sintered from a refractory metal powder having a melting point of above 2000 DEG C.

Method of reclaiming and reusing metallic scrap mixtures

Material for friction components designed to operate in a lubricated environment and a procedure for obtaining it

PCT No. PCT/ES93/00097 Sec. 371 Date Jul. 22, 1994 Sec. 102(e) Date Jul. 22, 1994 PCT Filed Dec. 3, 1993 PCT Pub. No. WO94/13846 PCT Pub. Date Jun. 23, 1994.A material for friction components made by a process including the steps of providing a first powder consisting of grains of a comparatively harder material with a comparatively higher coefficient of friction and an average grain size of from 60 to 100 microns, and a second powder consisting of grains of comparatively softer material with a comparatively lower coefficient of friction and an average grain size of from 60 to 100 microns; mixing the first powder and the second powder to form a powder mixture having a total volume; and subjecting the powder mixture to a pressure and temperature sufficient for the grains of the first powder to be intermixed with the comparatively softer material of the second powder so that the comparatively harder material substantially fills an intergranular space between the grains of the first powder ...

Methods for the implementation of nanocrystalline and amorphous metals and alloys as coatings

Methods for the use of nanocrystalline or amorphous metals or alloys as coatings with industrial processes are provided. Three, specific, such methods have been detailed. One of the preferred embodiments provides a method for the high volume electrodeposition of many components with a nanocrystalline or amorphous metal or alloy, and the components produced thereby. Another preferred embodiment provides a method for application of a nanocrystalline or amorphous coatings in a continuous electrodeposition process and the product produced thereby. Another of the preferred embodiments of the present invention provides a method for reworking and/or rebuilding components and the components produced thereby.

Thermal spraying powder material, and thermal spraying method and sprayed coating film using the same

(57)【要約】 【課題】 各種産業機械や一般向け機械の金属製部品に は、耐食性、耐摩耗性、耐熱性など求められる特性は用 途にあわせて多岐にわたっており、その解決手段として 溶射技術が採られるケースが多い。しかし、溶射皮膜 は、靭性及び耐衝撃性が低いことが問題となっている。 【解決手段】 本発明は、粒径６〜６３μｍであって、 ＷＣ粉末とクロムカーバイド粉末からなるセラミックス 相７５〜９５重量％と、ＮｉまたはＮｉ基合金粉末５〜 ２５重量％からなる金属結合相とを含み、セラミックス 相を構成するＷＣ粉末の一次粒子の平均粒径が５〜２０ μｍ、クロムカーバイド粉末の一次粒子の平均粒径が１ 〜１０μｍである、ＷＣ／クロムカーバイド／Ｎｉまた はＮｉ基合金の複合溶射粉末材、及びそれを用いた溶射 方法並びに溶射皮膜により、これを解決するものであ る。

Multi-layer composite sliding material with excellent seizure resistance

FRITTED IMPREGNATED RAW MATERIAL FOR ELECTRICAL CONTACT PARTS AND ITS PREPARATION PROCESS

Matière première imprégnée frittée pour pièces de contacts électriques et son procédé de préparation. On prépare cette matière à partir d'un mélange pulvérulent constitué par du tungstène, de l'argent et/ou du cuivre et d'un métal facilitant le mouillage, et 2 à 5 % en poids de graphite, mélange qu'on granule par voie thermique et on ajoute au granulat encore 1 à 6 % en poids de graphite. On comprime ensuite ce mélange en une structure qu'on imprègne avec de l'argent et/ou du cuivre. Cette matière est caractérisée par le fait qu'elle contient du carbone en partie sous forme combinée (carbure de tungstène) et en partie à l'état de carbone libre dans un rapport de 0,2 à 5. Utilisation de cette matière pour fabriquer des pièces de contacts électriques ayant une faible force de soudure et une faible perte au feu. Sintered impregnated raw material for electrical contact parts and its preparation process. This material is prepared from a powdery mixture consisting of tungsten, silver and / or copper and a metal which facilitates wetting, and 2 to 5% by weight of graphite, a mixture which is granulated by thermally and a further 1 to 6% by weight of graphite is added to the aggregate. This mixture is then compressed into a structure which is impregnated with silver and / or copper. This material is characterized by the fact that it contains carbon partly in combined form (tungsten carbide) and partly in the free carbon state in a ratio of 0.2 to 5. Use of this material to manufacture electrical contact parts with low welding force and low ignition loss.

Powder for thermal spraying and high-speed flame spraying method using the same

SINTERED METALLIC MATERIAL WITH ORIENTATED POROSITY COMPRISING AT LEAST ONE FERROMAGNETIC PART AND METHOD OF MANUFACTURING

ROTATING ANODE FOR X-RAY TUBE

PROCESS FOR SURFACE TREATMENT OF INORGANIC FIBERS FOR REINFORCING TITANIUM OR NICKEL

PROCEDE POUR LE TRAITEMENT DE SURFACE DE FIBRES INORGANIQUES POUR LE RENFORCEMENT DU TITANE OU DU NICKEL. CE PROCEDE CONSISTE A ENDUIRE LA SURFACE DES FIBRES INORGANIQUES AVEC UNE SOLUTION AQUEUSE OU UNE SOLUTION D'UN SOLVANT ORGANIQUE CONTENANT UN TITANATE, UN BORATE ET UN HYDROXYDE DE TETRALKYLAMMONIUM, ET A EXPOSER A UN TRAITEMENT THERMIQUE LES FIBRES INORGANIQUES AINSI ENDUITES, A 1300-1700C DANS UNE ATMOSPHERE INERTE OU NON OXYDANTE. L'INVENTION CONCERNE EGALEMENT LE TITANE OU LE NICKEL AINSI RENFORCE. PROCESS FOR THE SURFACE TREATMENT OF INORGANIC FIBERS FOR THE REINFORCEMENT OF TITANIUM OR NICKEL. THIS PROCESS CONSISTS OF COATING THE SURFACE OF THE INORGANIC FIBERS WITH AN AQUEOUS SOLUTION OR A SOLUTION OF AN ORGANIC SOLVENT CONTAINING A TITANATE, A BORATE AND A TETRALKYLAMMONIUM HYDROXIDE, AND EXPOSING THE INORGANIC AINSI FIBER 1300 TO A THERMAL TREATMENT, 1300 AINSI. 1700C IN AN INERT OR NON-OXIDIZING ATMOSPHERE. THE INVENTION ALSO CONCERNS TITANIUM OR NICKEL THUS REINFORCED.

Patent FR2349953B1

Powder for spray and its manufacturing method

一种用于形成涂层的喷雾用粉末,以其总重量为基准,它包含80－97%(重量)的金属陶瓷粉末和3－20%(重量)金属粉末,金属粉末包含Cr和Ni,它们的总量为金属粉末总重量的至少90%,Cr含量为金属粉末总重量的0－55%(重量)。

Wear resistant coating for piston rings

A wear resistant coating for protecting surfaces undergoing sliding contact is disclosed. The wear resistant coating is applied by high velocity oxygen-fuel (HVOF) deposition of a powdered blend of the coating constituents. The powdered blend includes a nickel-chromium alloy, chromium carbide, and molybdenum. The disclosed coating should find use as a bearing surface on piston rings, cylinder liners, and other components of a power cylinder assembly of an internal combustion engine.

Refractory metal-containing bodies

1449978 Refractory metal containing bodies PR MALLORY & CO Inc 4 Oct 1974 [23 Oct 1973] 43151/74 Heading C7D A body comprising a major amount by weight of particles of Ta, Mo or W or a refractory compound thereof (e.g. a carbide) in a minor amount by weight of a metal matrix comprising Ta, Mo or W and one or more of Ni, Fe, Co, Cu, Cr the average particle size of the particles being substantially the same as their average particle size prior to the formation of the body. The body may be prepared by forming a porous shaped skeleton of the refractory metal particles (e.g. by pressing at 10 t.s.i. and sintering at 1460‹C in hydrogen for 4 hours) and adding the matrix alloy in an amount in excess of that required to fill the voids in the porous skeleton and heating the skeleton and matrix alloy in a hydrogen atmosphere to 1,000-1100‹C for one hour at 1,000-1100‹C followed by ¢ hour at 1450-1480‹C, cooling and machining off the excess matrix alloy from the body. The Examples include the use of W and Mo particles and matrix alloys of composition:- 40% Mo 20% Fe 40% Ni; 40% W 20% Fe 40% Ni; 28.5% Mo, 28.5% Cu 28.5% Ni 14.5% Fe; 40% Mo 40% Co 20% Fe. The product may be used in aircraft counterbalances, radiation shielding, gyroscopic inertia members and die casting dies.

Process for hard facing a substrate

PROCESS FOR HARD FACING A SUBSTRATE ABSTRACT OF THE DISCLOSURE A hard facing alloy is applied to a surface of a substrate by making a mixture of at least two constituents whose net composition is the desired hard facing alloy composition. The constituents have different solidus temperatures, at least one of which is above a processing temperature of the substrate and another of which is below the processing temperature of the substrate. In one preferred approach, the mixture is prepared by pressing and lightly sintering the constituents in the form of powders, so that the mixture retains its shape and can be attached to the substrate surface. Then the substrate is heated to the processing temperature and maintained for a time sufficient to permit interdiffusion of the several different phases toward a homogeneous hard facing alloy composition uniformly through a major portion of the volume.

Sintered alloy for valve seat

A sintered alloy for a valve seat comprising, in weight percent, 0.5 to 1.7% C, 0.5 to 2.5% Ni, 3.0 to 8.0% Cr, 0.1 to 0.9% Mo, 1.0 to 3.8% W and 4.5 to 8.5% Co, the balance being substantially Fe provided by a base atomized powder; said alloy containing 8 to 14% by volume of 250 mesh or less C-Cr-W-Co-Fe and Fe-Mo hard grains and 6 to 13% by volume of cells, with the continuous cells being infiltrated by a copper alloy.

Patent FR2382758B1

Swash plate of swash plate compressor

A swash plate for a swash plate compressor, wherein aluminum alloy containing 12 to 60 % of Si and, as required, 0.1 to 30 % of Sn is sprayed onto the iron or aluminum base plate of the swash plate compressor to form a seizure-resisting and abrasion-resisting surface layer dispersed with granulated Si.

Low-friction surface coatings and methods for producing same

Perforated plates for cryogenic regenerators and method of fabrication.

Perforated plates (10) having very small holes (14) with a uniform diameter throughout the plate thickness are prepared by a 'wire drawing' process in which a billet of sacrificial metal is disposed in an extrusion can of the plate metal, and the can is extruded and restacked repeatedly, converting the billet to a wire of the desired hole diameter. At final size, the rod is then sliced into wafers, and the wires are removed by selective etching. This process is useful for plate metals of interest for high performance regenerator applications, in particular, copper, niobium, molybdenum, erbium, and other rare earth metals. Er3Ni, which has uniquely favorable thermophysical properties for such applications, may be incorporated in regions of the plates by providing extrusion cans (20) containing erbium and nickel metals in a stacked array (53) with extrusion cans of the plate metal, which may be copper. The array is heated to convert the erbium and nickel metals to Er3Ni. Perforated plates having two sizes of perforations (38, 42), one of which is small enough for storage of helium, are also disclosed.

Welding auxiliary product

Tappet for engine excellent in abrasion resistance and its manufacture

(57)【要約】 （修正有） 【課題】 耐久性と耐磨耗性の優れたエンジン用タペッ ト及びその製造方法を提供する。 【解決手段】 ５０〜１００ｗｔ％のニッケル粉末、０ 〜４５ｗｔ％のＣｒ、０〜３５ｗｔ％のＭｏ、０〜１０ ｗｔ％のＡｌ、０〜２５ｗｔ％のＣｏ、０〜１０ｗｔ％ のＣｕ、及び仕方なく混合される不純物から構成される 結合材の材料と；炭化物、窒化物、及び硼化物から構成 されるグループの中から選ばれた一つ以上の化合物から 構成される硬質粒子からできている焼結体をタペット５ の表面に形成させる。又、ＷＣ４４〜８８ｗｔ％、Ｃｏ ４〜１０ｗｔ％、Ｎｉ１５〜５０ｗｔ％、Ｃｒ５〜２０ ｗｔ％、Ｂ０．５〜４ｗｔ％、Ｆｅ２〜４ｗｔ％、Ｓｉ ０．５〜４ｗｔ％、Ｃ１．０ｗｔ％以下及び仕方なく含 まれる不純物から構成される合金粉末材料をタペット５ の表面にコーティングさせた。

Methods for the implementation of nanocrystalline and amorphous metals and alloys as coatings

Methods for the use of nanocrystalline or amorphous metals or alloys as coatings with industrial processes are provided. Three, specific, such methods have been detailed. One of the preferred embodiments provides a method for the high volume electrodeposition of many components with a nanocrystalline or amorphous metal or alloy, and the components produced thereby. Another preferred embodiment provides a method for application of a nanocrystalline or amorphous coatings in a continuous electrodeposition process and the product produced thereby. Another of the preferred embodiments of the present invention provides a method for reworking and/or rebuilding components and the components produced thereby.

Composite nanofiber, composite nanofiber mass, composite structure, and processes for producing these

Silica nanofibers are derived from crystalline polymer filaments comprising a polymer which has a linear polyethyleneimine skeleton and can form a water-insoluble crystalline structure in the presence of water molecules at room temperature. The crystalline polymer filaments in the silica concentrate metal ions, whereby composite nanofibers can be realized in which the silica contains a metal or metal ions inside. The composite nanofibers can be easily produced by fixing, within silica, a polymer structure serving as a scaffold for metal ions and either concentrating metal ions on the scaffold or reducing the metal ions. Furthermore, metal-containing silica nanofibers can be easily obtained by removing the polymer ingredient from the composite nanofibers or from a mass or structure of the composite nanofibers. These nanofibers can be aggregated or gathered. The mass or structure obtained through aggregation or gathering can have various shapes.

Solid solution matrix cathode

An impregnated thermionic cathode includes a porous matrix of sintered tungsten-alloy particles containing less than six percent iridium and/or other platinum-group metal. The pores of the matrix are impregnated with a temporary process impregnant such as molten copper or an organic monomer, and upon solidification is machined to a desired shape. Thereafter the temporary process impregnant is removed, and the matrix pores again infiltrated with a barium oxide such as molten barium aluminate, or other alkaline earth. A thin, iridium-rich surface activating layer, preferably of about 50% iridium, is then applied to the emitting surface. The diffusion of surface activating iridium is substantially blocked; superior emission and lifetime is provided; and the cathode is relatively low cost and easy to fabricate.

Contact material of vacuum interrupter and manufacturing process therefor

Contact materials of a vacuum interrupter and producing process therefor are disclosed. The contact materials provide a contact which is much high in relatively large current and small lagging and leading current interrupting capabilities and dielectric strength while a little in an anti-welding capability down. The contact materials are composed of between 20 and 70 weight % copper, between 5 and 70 weight % molybdenum and between 5 and 70 weight % chromium. The contact material is produced by diffusion bonding a mixture of molybdenum powder and chromium powder into a porous matrix and infiltrating the matrix with copper. Alternatively, the contact materials may be produced by sintering a mixture of three metal powders.

SINTER COMPOSITE FOR ELECTRICAL CONTACTS AND METHOD FOR THE PRODUCTION THEREOF

AgCdO based contact elements are replaced in contactors and small circuit breakers with CdO-less type elements which exhibit little burn-off in the arc, a low welding force and minimal heating when carrying continuous current. However, known AgSnO2 contact materials do not have optimum values in all operationally important properties. In these contact materials a more firmly adhering oxide layer occurs as compared with AgCdO. The invention relates to a sintered compound material for electrical contacts, consisting of AgSnO2Bi2O3CuO and containing at least one other metal oxide additive which sublimes below the melting temperature of silver. The SnO2, Bi2O3 and CuO are globularly precipitated in silver material structure zones having a maximum diameter of 200 mu m, and the metal oxide additive is distributed on the surfaces of the boundary regions of these microscopic silver zones.

Ceramic Metallized Substrate with Smooth Plating Layer and Manufacturing Method Thereof

본 발명은 질화알루미늄을 주성분으로 하는 세라믹기판과, 상기 세라믹기판의 적어도 한 면상에 형성된 텅스텐-및/또는 몰리브덴계 메탈라이즈층과, 상기 메탈라이즈층상에 형성되고 두께가 2㎛이하, 표면조도(Ra)가 2㎛이하인 니켈계도금층으로 이루어진 평활한 도금층을 지닌 세라믹메탈라이즈기판에 관한 것이다. 다른 형태로 상기 도금층은 제1도금층과 제2도금층의 두께가 각각 2㎛이하, 1㎛이하이고 제2도금층의 표면조도(Ra)가 2㎛이하인 제1니켈계도금층 및 제2금계도금층으로 구성해도 된다. 이들 메탈라이즈기판은 그린 A1N세라믹기판상에 W 및/또는 Mo의 메탈라이즈페이스트를 도포, 평탄화처리, 소성하고, 전술한 도금층을 형성하는 것에 의해 제조된다.

Swash-plate of swash-plate type compressor

The seizure resistance of an Al-based flame-sprayed layer formed on the swash plate of a swash-plate type comressor is increased to such a level comparable to that of a flame-sprayed bronze layer. The Al-based flame-sprayed layer of the present invention contains: from 12 to 60% of Si and granular Si particles dispersed in the matrix thereof, and at least one dispersing phase of graphite carbon, amorphous carbon and carbon, the crystallizing degree of which is between the graphite carbon and amorphous carbon, and MoS 2 .

Material for friction products working under lubrication and its manufacture

SINTERED MATERIAL IMPREGNATED FOR ELEMENTS OF ELECTRICAL CONTACT AND PROCEDURE FOR ITS PRODUCTION.

Bearing combination

PROCESS FOR MANUFACTURING A PENETRATING COMPOSITE METAL

Material for friction parts for operation in a lubricated environment and process for obtaining said material

Coated reinforcing fibers, composites and methods

Fiber-reinforced titanium alloy and intermetallic matrix composites having improved stability and tensile strength properties at elevated temperatures. The base reinforced fibers are pre-coated with a tailorable tri-layer coating, such as Ti--TiN--Ti. Preferably the TiN layer is graded so as to have metal-rich outer surfaces, such as titanium-rich TiN, providing excellent bonding affinity for the base titanium layer, bonded to the surface of the fibers, such as silicon carbide, and for the outer titanium layer, bonded to the titanium aluminum matrix, and a compound core, such as stoichiometric TiN, providing a stable interfacial barrier against chemical reactions, whereby the tensile strength and resistance to cracking of the composite is preserved even at elevated temperatures of 900° C. or higher.

Patent JPS5919982B2

Ceramic metallized substrate having smooth plating layer and method of manufacturing the same

METHOD FOR TREATING THE SURFACE OF INORGANIC FIBERS

Swash plate of swash plate compressor

본 발명은, 사판식컴프레서의 철 혹은 알루미늄기판에, Si를 12∼60% 및 필요에 의해 Sn을 0.1∼30% 함유하는 알루미늄합금을 용사함으로써, Si가 입자형상으로 분산한 눌어붙음내성 및 마모내성을 겸비한 표면층을 형성하는 것을 특징으로 한 것이다. In the present invention, by pressing the aluminum alloy containing 12 to 60% of Si and 0.1 to 30% of Sn as necessary to the iron or aluminum substrate of the swash plate compressor, the crush resistance and wear resistance of Si dispersed in the form of particles It is characterized by forming a surface layer having both resistance.

Composite nanofiber, composite nanofiber association, complex structure, and production method thereof

A silica nanofiber is derived from a crystalline polymer filament of a polymer including straight chain polyethyleneimine backbones, which is capable of forming a water-insoluble crystal in the presence of water molecules at room temperature, and the crystalline polymer filament in the silica concentrates metal ions, thereby realizing a composite nanofiber including metals or metal ions in the silica. Furthermore, the composite nanofiber of the present invention can be easily produced by fixing a polymer structure in the silica as the scaffold for metal ions and concentrating metal ions at the scaffold or reducing the metal ions. Furthermore, a metal-containing silica nanofiber can be easily obtained by removing a polymer component from the composite nanofiber, the composite nanofiber association, and the complex nanofiber structure. These nanofibers can be assembled and integrated, and the assembled or integrated association or structure can realize various shapes.

Polycrystalline diamond cutting element

A polycrystalline-diamond cutting element for a drill bit of a downhole tool. The cutting element includes a substrate and a diamond table bonded to the substrate. The diamond table includes a diamond filler with at least one leached polycrystalline diamond segment packed therein along at least one working surface thereof. The cutting element may be formed by positioning the diamond table on the substrate and bonding the diamond table onto the substrate such that the polycrystalline diamond segment is positioned along at least one working surface of the diamond table. A spark plasma sintering or double press operation may be used to bond the diamond table onto the substrate.

Patent JPS5539601B1

The contact materials for gas circuit breaker and methods of the same

적어도 Cu를 호함하는 전도성 성분, 및 W, Zr, Hf, V 및 Ti의 카바이드(carbide)로 구성되는 그룹으로부터 선택된 적어도 하나를 포함하는 내아크 성분(arc-proof component)을 포함하는 진공 차단기(vacuum interrupter)용 접점 재료 (contact material). 접점 재료에서의 전도성 성분의 양은 40-50%이고, 접점 재료에서의 내아크 성분의 양은 50-60%이며, 내아크 성분의 입자 크기(grain size)는 3㎛ 이하이다. 전도성 성분에 녹아 있는 Co, Fe 및 Ni로 구성되는 그룹으로부터 선택된 적어도 하나를 포함하는 소결 활성제(sintering activator)의 총량은 전도성 성분의 0.1%이하이다. Vacuum barrier comprising an arc-proof component comprising at least Cu-conductive component and at least one selected from the group consisting of carbides of W, Zr, Hf, V and Ti contact material for interrupters. The amount of conductive component in the contact material is 40-50%, the amount of arc resistant component in the contact material is 50-60%, and the grain size of the arc resistant component is 3 μm or less. The total amount of sintering activator comprising at least one selected from the group consisting of Co, Fe and Ni dissolved in the conductive component is 0.1% or less of the conductive component.

Impregnated sintered material for electrical contacts and method for its production

An impregnated sintered material for making electrical contact members which have a low fusing force and little burning in which a powder mixture of W, Ag and/or Cu, a wetting promoting metal, and 2 to 5 percent by weight graphite is granulated thermically, and another 1 to 6 percent by weight graphite admixed to the granules, after which the mixture is compacted to form a skeleton and impregnated with Ag and/or Cu. The carbon contained in the finished material is partly in bound form as WC and partly free carbon in a 1:5 to 5:1 ratio.

Spark plug electrode

Thermal spray membrane contact material, contact member and contact part, and apparatuses to which they are applied

To provide a thermal spray membrane contact material, contact member and contact part and an apparatus to which they are applied, showing excellent seizure resistance and wear resistance even under high surface pressure/low speed sliding, high speed/high temperature sliding, or high surface pressure/high speed sliding. In a bucket connecting apparatus connecting an arm and a bucket by a work implement connecting pin, the above-mentioned work implement connecting pin comprises a base material made of steel having an axis function and a contact surface formed of a thermal spray membrane contact material film-formed on the base material, said contact surface being placed at least on a supported surface site of the work implement connecting pin relative to a bracket and on a slipping contact surface with a work implement bushing, further, said thermal spray membrane contact material being composed of a Mo metal phase, or 10 vol % or more of a Mo metal phase and a metal phase and/or alloy phase containing one or more elements selected from the group consisting of Fe, Ni, Co, Cr, Cu and Zn.

Vacuum type breaker contact material

This invention provides a vacuum type breaker contact material prepared by infiltrating copper into a sintered tungsten matrix, wherein elementary particle size and the growth of the particle size by heat processing are controlled in such a manner that the ratio of the largest value/the smallest value of tungsten particle size becomes not more than 10, and that the maximum value of tungsten particle size is not larger than 2 mu m and the minimum value of tungsten particle size is not smaller than 0.3 mu m.

Sintered metal material having directional porosity and comprising at least one ferromagnetic part, and production method thereof

Matériau métallique fritté comprenant au moins une partie magnétique, caractérisé par des porosités orientées débouchantes de dimension comprise entre 1 et 100 µm, ledit matériau présentant une densité variant de moins de 20% d'un échantillon de 1cm3 à l'autre pris dans une pièce monobloc réalisée dans ledit matériau.

Semi-conductive device

Improvements made to blocking layer electrode systems comprising a germanium or silicon semiconductor body soldered to a support plate, more particularly a crystal diode or a transistor, characterized by the fact that the support plate consists of one of the non-radioactive transition metals of the sixth column of the periodic system, that is, chromium, molybdenum or tungsten. (Machine-translation by Google Translate, not legally binding)

Functionally graded metal substrates and process for making same

The invention provides for a functionally-graded metal substrate that is made of at least two metal compositions, a functional insert and a surrounding body that surrounds the functional insert. In a preferred embodiment of the invention a functional insert powder composition of loose powder metal is place in a compact of a surrounding body powder composition and both metal compositions are sintered in a sintering furnace to form a sintered part. The sintered part is infiltrated in part or in whole with a molten metal compound to produce a functionally graded metal substrate having a density of at least 90 % of theoretical. A heat-generating component such as a chip can be attached to the metal substrate for use in microelectronic packaging. When the functionally-graded metal substrate has two discrete compositions of copper/tungsten the surrounding body which has a CTE that ranges from about 5.6 ppm/C to about 7 ppm/C constrains the expansion of the functional insert which has a thermal conductivity that ranges from about 200 W/mK to about 400 W/mK.

Patent DE2920014C2

Tungsten and Molybdenum Compounds and Their Use for Chemical Vapor Deposition (CVD)

Thermal spray powder

Sintered alloy having wear resistance at high temperature

1355291 Sintered iron alloys TOYOTA JIDOSHA KOGYO KK 10 Jan 1972 [28 June 1971] 1065/72 Headings C7A and C7D A sintered wear-resistant alloy consists of a sintered iron-base skeleton, the pores of which are infiltrated with copper, copper-based alloys, copper-lead based alloys, lead, lead-base alloys, antimony or antimony-lead alloys. The sintered skeleton consists of, in weight per cent:- 0À25 to 8% molybdenum 0À2 to 1À0% carbon and 0À2 to 2À0% tungsten, vanadium, titanium or tantalum or 1 to 20% nickel and/or copper or 0À1 to 2À0% phosphorus, sulphur or boron, the balance being iron. Preferred infiltrants are copper in amounts of 10 to 30 per cent by weight of the resulting alloy, 10 to 30 per cent of copperbased alloy with chromium, tin and/or zinc, 5 to 30 per cent of copper-lead alloy or of copper-lead based alloy with chromium, tin and/or zinc, 1 to 25 per cent by weight of lead, antimony, antimonylead alloy or of lead-based alloy with bismuth, antimony and/or cadmium. The alloys are produced by mixing the powdered constituents for the skeleton, pressing and heating under reducing atmosphere, and then infiltrating the skeleton under reducing atmosphere. The sintered alloys are particularly suited for valve seat rings of internal combustion engines or bearings for rollers.

Metal film and metal film-coated member, metal oxide film and metal oxide film-coated member, thin film forming apparatus and thin film forming method for producing metal film and metal oxide film

The metal film of the present invention is a dense film of a single crystal that has very low surface roughness and very good crystal orientation because an arithmetic mean roughness of the surface is not larger than 2 nm and a (111) peak intensity of X-ray diffraction is not less than 20 times the sum of all other peaks. Also the metal oxide film of the present invention is a dense film that includes less oxygen defects and almost no voids therein because a content of a non-oxidized metal is not higher than 1 mole % of a metal component that constitutes the metal oxide and a packing density is 0.98 or higher.

SINTERED POROSITY FRITTED METAL MATERIAL COMPRISING AT LEAST ONE FERROMAGNETIC PART AND METHOD OF MANUFACTURE

Matériau métallique fritté comprenant au moins une partie magnétique, caractérisé par des porosités orientées débouchantes de dimension comprise entre 1 et 100 µm, ledit matériau présentant une densité variant de moins de 20% d'un échantillon de 1 cm3 à l'autre pris dans une pièce monobloc réalisée dans ledit matériau. Sintered metal material comprising at least one magnetic part, characterized by open-ended porosities with a size of between 1 and 100 μm, said material having a density varying from less than 20% of a sample of 1 cm3 to another taken in a monoblock piece made in said material.

Functionally classified metal substrate and process for making it

(57)【要約】 本発明は、少なくとも２個の金属組成物で作られる機能的に分類された金属基板、機能的挿入物、および機能的挿入物を取り囲む周辺ボディを提供する。本発明の好ましい実施態様において、緩い粉末金属の機能的挿入物粉末組成物は、周囲ボディ粉末組成物のコンパクトで配置され、そして両方の金属組成物は、焼結炉で焼結加工され、焼結した部分を成形する。焼結した部分は、部分的または全体的に、溶融金属化合物を用いて溶浸され、そして理論の少なくとも９０％の密度を有する、機能的に分類された金属基板を生成する。チップのような熱発生要素は、ミクロエレクトロニックパッケージにおける使用のために、金属基板に取り付けられ得る。機能的に分類された金属基板が銅／タングステンの２個の不連続成分を有する場合、ＣＴＥ（約５．６ｐｐｍ／Ｃ〜約７ｐｐｍ／Ｃの範囲）を有する周辺ボディは、熱伝導率（約２００Ｗ／ｍＫ〜約４００Ｗ／ｍＫの範囲）を有する機能的挿入物の膨張を制約する。

Sprühpulver, verfahren zur thermischen spritzung und gesprühte beschichtung

Materiale sinterizzato impregnato per elementi di contatto elettrico e procedimento per la suaproduzione.

Wolfram- und molybdän-verbindungen und ihre verwendung für die chemical vapour deposition (cvd)

Electrical contact member

Hartlötmaterial zum Verbinden einer keramischen Oberfläche mit einer keramischen oder metallischen Oberfläche.

Harter Schneidwerkzeug-Sinterkörper

[UNK]

Hartlötmaterial zum Verbinden einer keramischen Oberfläche mit einer keramischen oder metallischen Oberfläche.

Oberflächenbehandlungsverfahren unter Verwendung einer elektrischen Entladung, und Elektrode für das Oberflächenbehandlungsverfahren

Thermisch aufgetragene beschichtung für kolbenringe aus mechanisch legierten pulvern

Die vorliegende Erfindung betrifft eine verschleißfeste Beschichtung zur Verwendung für Laufflächen und Flanken von Kolbenringen in Verbrennungskraftmaschinen. Die erfindungsgemäße verschleißfeste Beschichtung wird erhalten durch mechanisches Legieren von Pulvern, die eine metallische Matrix bilden mit Hart- sowie Gleitstoffdispersoiden. Die Beschichtung wird thermisch dann auf die Werkstücke, insbesondere mittels Hochgeschwindigkeits-Flammspritzen (HVOF), aufgetragen. Bei den Werkstücken handelt es sich um die Laufflächen und Flankenteile von Kolbenringen in Verbrennungskraftmaschinen.

[UNK]

[UNK]

[UNK]

Tungsten and molybdenum compounds and their use for chemical vapour deposition (CVD)

Tungsten and molybdenum compounds and their use for chemical vapour deposition (cvd)

Tungsten- and molybdenum compound (I), is new. Tungsten- and molybdenum compound of formula (I), is new. M : W or Mo; R 1>, R 2>1-12C-alkyl, 5-12C-cycloalkyl, 6-10C-aryl, 1-alkenyl, 2-alkenyl, 3-alkenyl, triorganosilyl residue of formula SiR 3or amino residue of formula NR 2(all optionally substituted); R : 1-4C-alkyl; R 3>, R 4>1-8C-alkyl, 5-10C-cycloalkyl, 6-14C-aryl, SiR 3or NR 2(all optionally substituted); and R 5>, R 6>1-12C-alkyl, 5-12C-cycloalkyl, 6-10C-aryl (all optionally substituted) or H. Independent claims are included for: (1) the preparation of (I); (2) tungsten- and/or molybdenum containing layer, prepared by means of chemical vapor deposition method using (I) as a precursor; and (3) a substrate comprising the tungsten- and/or molybdenum containing layer. [Image].

Hochtemperatur-Werkstoff

放电表面处理方法和放电表面处理用电极

使用含钼等有固体润滑作用的材料的放电电极,在水等不含碳成分的加工液中,使该放电电极与被表面处理材料间产生脉冲放电,在被表面处理材料的处理对象表面堆积并附着脉冲放电的放电能量产生的放电电极的电极消耗熔融物质,从而在处理对象表面形成有润滑作用的被膜。

Verfahren zur Herstellung eines hochtemperatur-festen Bauteils aus zwei unterschiedlichen Werkstoffen

[UNK]

[UNK]

[UNK]

[UNK]

[UNK]

Hartmetallmasse aus Wolframcarbid und Kobalt