Corrosion resistant titanium silicide film coating glass and preparation thereof

The invention discloses anticorrosive titanium silicide (Ti5Si3) film-plated glass and a method for preparing the same. Silane and titanium tetrachloride are used as a reaction precursor; nitrogen gas is used as dilute gas and protective gas; and the reaction precursor is deposited on the surface of the glass at a temperature of between 650 and 740 DEG C to generate the Ti5Si3 film-plated glass. The prepared Ti5Si3 film-plated glass has thickness of between 200 and 300 nm, infrared reflectivity of between 85 and 93 percents and transmissivity in a visible light region of between 30 and 20 percents and is the anticorrosive titanium silicide film-plated glass with functions of light dimming, heat insulation and low radiation. Compared with the prior TiSi2 film-plated glass, the titanium silicide (Ti5Si3) film-plated glass has good corrosion resistance and wider application prospect. The preparation of the film-plated glass is carried out in a tin groove, a transition roller or the front end ...

High-dielectric high-magnetoconductivity composite ceramic having NZFO crystalline-phase densely coated with Amorphous BTO phase and preparation method thereof

The invention discloses a high-dielectric high-magnetoconductivity composite ceramic having NZFO crystalline-phase densely coated with Amorphous BTO phase and a preparation method thereof. The composite ceramic comprises (1-x)BaTiO3/xNi0.5Zn0.5Fe2O4, wherein x is more than or equal to 0.7 and less than or equal to 0.9; NZFO crystalline-phase is a principle phase, and BTO amorphous phase is in-situ formed and completely and densely filled among NZFO grains, so that NZFO grains can be uniformly coated and isolated by the BTO amorphous phase, and thus the two-phase composite ceramic having NZFO crystalline-phase densely coated with Amorphous BTO phase is formed. The preparation method comprises the following steps: firstly, calcining to form dense BTO/NZFO composite ceramic; then, quickly raising the calcining temperature so that BTO in a small amount in the system is completely melted into liquid state to completely separate NZFO phase grains; finally, quickly cooling the composite ceramic ...

Nanometer line bottom electrode and dielectric medium composite film capacitor and preparing method thereof

The invention discloses a nano wire bottom electrode and a dielectric compound film capacitor, wherein, a titanium silicide conductive film layer, a titanium silicide nano wire bottom electrode layer and a dielectric film layer are deposited on a substrate from the top down. The capacitor is prepared by adoption of the sol-gel method, has low requirements on equipment, and is convenient to operate and easy to realize. The dielectric compound film capacitors utilizes the high specific surface area of the titanium silicide nano wire bottom electrode, greatly increases the contact area of dielectrics and the electrode, and improves the capacitance of the film composite structure which is over three times of the capacitance of a common electrode film with the same scale.

Niobium-doped barium ferrite wave-absorbing powder material and preparation method

The invention discloses a niobium-doped barium ferrite wave-absorbing powder material, with the chemical formula of BaFe(12-x)NbxO19, wherein x is equal to 0.6-0.8, the niobium-doped barium ferrite is a single-phase polycrystalline powder body, and also contains Fe<3+> and Fe<2+>. A preparation method comprises the following steps: performing ball milling and subsequent secondary vacuum high-temperature thermal treatment by adopting a self-propagating combustion method, to obtain the niobium-doped barium ferrite wave-absorbing powder material. The wave-absorbing material has the characteristic of being thin in matching thickness and wide in wave-absorbing band, the effective wave-absorbing band is controlled within the frequency range of 23-40GHz, double-absorption peak appears, the effective absorption band width is about 15GHz, the optimal matching thickness is about 0.8mm, and the best reflection loss RL value at the specific frequency can achieve 42dB. The niobium-doped barium ferrite ...

Preparation method for nanometer barium titanate

This invention relates to a method for preparing nanometer barium titanate. The procedures comprise: preparation of precipitate of hydroxyl oxide of titanium and de-ionized water as reactants, using ethylenediamine or ethanolamine or the mixture of both as solvent, adding potassium hydroxide solution in proper concentration as crystallization accelerator under the temperature of 100-200deg.C, processing hydro-thermal reaction to obtain monodisperse nanometer barium titanate powder. This invention has advantages of: simple process, easy to be controlled, no pollution, low cost, easy to realize commercial production; product with high pureness, well crystallinity, well dispersity, narrow size distribution, easy to be controlled of the size by changing the production parameters. Said product can be used in fields of: micro-electronic device, electro-optical device, storage material, high permittivity material and air-sensitive material.

Preparation method of nanometer barium zirconate

The invention discloses a method for preparing nano barium zirconate, comprising the following steps that: the zirconic oxyhydroxide precipitation and a de-ionized water solution of barium acetate are prepared and are taken as reaction raw materials, a mixing solution of quadrol and mono ethanolamine, diethanolameine or trolamine is taken as a solvent, potassium hydrate with an appropriate concentration is added to accelerate the crystallization at a temperature of between 150 and 230 DEG C, the thermal reaction is performed on the solvent and the barium zirconate nano powder body with good dispersivity is obtained. The method has the advantages of simple process, easy control, low cost and easiness for mass production. The prepared nano powder body has good crystallinity and dispersivityand narrow grain size distribution; moreover, the grain diameter can be adjusted by changing the technological parameter. The product has wide application prospect in the fields such as a microelectronic ...

Method for preparing calcium titanate nanospheres

The invention relates to a method for preparing calcium titanate nanospheres. The method comprises the following steps of: adding a mineralizing agent, namely potassium hydroxide, into hydrothermal reaction materials, namely titanium hydroxide coprecipitate and deionized water solution of calcium nitrate; introducing solution obtained by hydrothermally decomposing glucose into a hydrothermal system to influence nucleation and control the shapes of products; and synthesizing the calcium titanate nanospheres of which the diameter is 200 to 1,000nm by hydrothermal reaction. The calcium titanate nanospheres are synthesized for the first time; the process is simple and is easy to control; the method is environment-friendly and low in cost; and the products are easy to produce.

Zirconium-doped barium ferrite wave-absorbing material and preparation method thereof

The invention discloses a zirconium-doped barium ferrite wave-absorbing material having a chemical formula of BaFe12-xZrxO19, wherein x is 0.3-0.5, zirconium-doped barium ferrite is a polycrystalline powder, and Fe<3+> and Fe<2+> exist in the barium ferrite simultaneously. A preparation method comprises the preparation steps: mixing barium nitrate, iron nitrate and zirconium nitrate, adding deionized water, and dissolving into a nitrate solution; placing EDTA in deionized water, and dissolving into an EDTA solution; adding the nitrate solution into the EDTA solution, heating, drying, and thus obtaining a dry gel; and sintering the dry gel to obtain a zirconium-doped barium ferrite powder, then grinding, and thus obtaining the zirconium-doped barium ferrite wave-absorbing material. The wave-absorbing material has the characteristics of thin matching thickness and wide wave-absorbing frequency band, can be used for a wave-absorbing coating layer, and can have wide applications in the electromagnetic ...

Method for preparing porous balls of strontium titanate

Corrosion resistant titanium silicide film coating glass and preparation thereof

Cobalt material doping with ferrous acid bismuth multi-iron and preparation method thereof

The invention discloses cobalt doping bismuth ferric material, the chemical formula of which is BicoxFe1-xO3; x is not more than 0.07 while is more than 0. The preparation method is that: oxyhydroxide precipitation of iron, bismuth and cobalt is made as the reaction material; potassium hydroxide with suitable concentration is added to promote crystallization; cobalt doping bismuth ferric powder is then obtained by hydrothermal reaction under the temperature of 120 degrees to 200 degrees. The invention dramatically enhances the magnetism of the bismuth ferric by doping cobalt; furthermore, theinvention has simple technique, has no pollution, low cost and is suitable for mass production. The cobalt doping bismuth ferric material of the invention has stable crystallization quality and has wide application prospect in the fields such as information storage, satellite communication, precise control, circuit measurement of high voltage transmission lines and magnetoelectric sensors.

Method for preparing TiN nano-powders

The invention discloses a method for preparing TiN nano-powder, which adopts a chemical vapor deposition process. A cleaned substrate is put into a vapor deposition reaction chamber; NH3 and preheated Ti source are directed to the reaction chamber by taking inert gas as carrier gas to prepare the TiN nano-powder. The method of the invention has the advantages of simple process, low production cost, continuous production, high efficiency and high yield, with the size and the shape of the particle capable of being controlled conveniently and effectively; the TiN nano-powder produced has even particles, and can be spherical, cubic and nanorod-shaped, etc.

Electrical site testing reflecting liquid crystal light valve for large screen projection

An electrically-addressed reflection-type liquid crystal light valve for large-screen projection is sequentially composed of optical glass, transparent conducting film, orientation layer, liquid crystal layer, orientation layer, medium reflector, light barrier layer and control base board. Said medium reflector is multi-layer high-reflection SiO2/TiO2 film or ZnS/MgF2 film. Said light barrier layer is a film made of non-crystal silicon, SiCx, or SiNx as matrix and photosensing nm-class crystal grains of Si or Ge, or CdTe film. Its advantages include no influence from strong light, firm adhesion of film layers and long service life.

Method for preparing similar bone bioactivity coatings medical material by galvano-chemistry method

The invention discloses bone-like bioactive coating medical material which is prepared by adopting an electrochemical method. The invention adopts an electrolytic deposition method and imitates the forming process of a natural bone. Electrolyte solution contains calcium, a phosphorous compound and bone matrix collagen, a medical metal transplant body is taken as a working electrode, platinum is taken as a reference electrode, the electrode reaction causes partial pH value of the electrolyte solution around the medical metal transplant body to ascend, thereby leading collagen to be gelatinized, in cooperation with the deposition of calcium phosphate mineral, the bone-like bioactive coating is formed on the medical metal surface. Through the adoption of the invention method, the bioactive coating acquired on the surface of the metal transplant body is similar to the natural bone in the component and the structure, and has favorable biological activity, thus the disadvantages that the biological ...

Dielectric adjustable thin film based on implantation type nano line electrode and preparation thereof

The invention discloses a dielectric adjustable film based on an implantable nano-wire electrode. Titanium silicide conductive film layer, titanium silicide conductive nano-wire layer and dielectric medium film layer are orderly deposited on a basic board from bottom to top. The film can be prepared by magnetron sputtering deposition and sol-gel method. The dielectric adjustable film based on an implantable nano-wire electrode implants silicide conductive nano-wire into the inner of the dielectric film, makes full use of the marginal electric field of the nano-wire electrode, gets a high adjustability under a very low modulating voltage and reduces the modulating voltage of the dielectric adjustable film without nano-wire electrode, which is from 1/6 to 1/10 of in the ordinary course. The dielectric adjustable film based on an implantable nano-wire electrode of the invention has good compactness, little defects and loss. The dielectric film based on an implantable nano-wire electrode is ...

Nanometer Ag particle-(Ba0.65, Sr0.35)TiO3 seepage-type composite ceramic film and preparation method thereof

The invention discloses a nanometer Ag particle-(Ba0.65, Sr0.35)TiO3 seepage-type composite ceramic film and a preparation method thereof. The ceramic film takes polycrystal perovskite phase ceramic as a substrate in which nanometer Ag particles are distributed, the polycrystal perovskite phase ceramic is (Ba0.65, Sr0.35)TiO3, and the molar ratio of nanometer Ag to (Ba0.65, Sr0.35)TiO3 is (0.2-0.6):1. The preparation method comprises the following steps of: preparing a stable Ag-(Ba, Sr)-Ti sol precursor by taking tetrabutyl titanate, barium acetate and strontium nitrate as a Ti source, a Ba source and an Sr source, taking silver nitrate as an Ag source, taking concentrated nitric acid as a stabilizing agent, taking diacetone and citric acid as a complexing agent, and taking ethylene glycol monomethyl ether and glycol as a mixed solution; then, coating on an ITO (Indium Tin Oxide)/glass substrate with a dipping and pulling method; and preparing the composite ceramic film by air atmosphere ...

Method for preparing strontium titanate nanometer powder of one-dimensional structure

The invention discloses a method for preparing strontium titanate nanometer powder with one-dimension structure, which consists of procedures of preparing the oxyhydroxide precipitate of titanium and the deionized aqueous solution of barium acetate as reaction materials, adding a feasible quantity of potassium hydroxide to promote crystallization, and appending a suitable viscosity of patterned vertical alignment polymer surfactant to control the feature; under the temperature of 100-150 DEG C, strontium titanate nanowire and a branched crystal structure are obtained after a hydrothermal reaction. The craftwork of the invention is simple; the micro feature of the product is easy to control, the pollution is free; the cost is low; a large-scale production is suitable. The quality of the crystallization of the prepared product is stable; the specific surface is big. A broad application prospect is possessed in fields of micro electronic devices, EO devices, storage devices, oxygen sensors ...

Preparation method of lead titanate/zinc oxide composite nanostructure on flexible substrate

The invention discloses a preparation method of a lead titanate/zinc oxide composite nanostructure on a flexible substrate. The preparation method comprises the steps: preparing a powdery one-dimensional columnar-structure lead titanate monocrystal nanofiber by using a hydrothermal method, adding absolute ethyl alcohol, carrying out ultrasonic oscillation into a suspension, dripping onto a silicon slice, drying, annealing, to obtain a tetragonal-phase lead titanate monocrystal nanofiber, scraping down from the silicon slice, adding absolute ethyl alcohol, dripping onto the flexible substrate, and forming a lead titanate monocrystal nanofiber film on the flexible substrate; and then taking zinc acetate as a zinc oxide seed solution, taking a mixed solution of a zinc nitrate aqueous solution, a hexamethylentetramine aqueous solution and a sodium citrate aqueous solution as a zinc oxide growing solution, growing zinc oxide on the flexible substrate with the lead titanate monocrystal nanofiber ...

A method for TiO2 nano polymerization synergistic modification and coloration of pearls

Method for preparing one-dimensional columnar structure calcium-doped lead titanate monocrystal nano-fibers

The invention relates to a method for preparing one-dimensional columnar structure calcium-doped lead titanate monocrystal nano-fibers. The method is a hydrothermal reaction method and comprises the following steps of: dissolving titanium ions in ethylene glycol monomethyl ether serving as a solvent, and precipitating the titanium ions by using ammonia water serving as a precipitator; controlling the growing direction by using polyvinyl alcohol serving as a surface modifier; and finally, promoting crystallization by using potassium hydroxide serving as a mineralizer, and synthesizing the one-dimensional columnar structure calcium-doped lead titanate monocrystal nano-fibers. The method has the advantages of simple process flow, high controllability, no pollution, low cost and suitability for mass production; and the one-dimensional columnar structure calcium-doped lead titanate monocrystal nano-fibers prepared by the method have the advantages of high purity and high dispersibility.

Polyvinylidene fluoride- acetylene black high dielectric constant composite film and preparation process thereof

The invention discloses polyvinylidene fluoride- acetylene black superdielectric composite film. It comprises components with their proportion by volume as follows: polyvinylidene fluoride with its weight average molecular weight being 4 million, 98.0- 99.0%; and acetylene black with the crystal size being 50- 100 nm, 1.0- 2.0. The method for preparing said composite film comprises: mixing acetylene black powder and polyvinylidene fluoride to produce mixing solution, producing polyvinylidene fluoride- acetylene black composite film with dipping and dragging method, heat treating at constant temperature of 60- 80 Deg. C, and getting final product. The film is characterized by excellent dielectric property, high dielectric constant (56 when it is100KHz) and ultra- low dielectric loss (less than 0.15), and good frenquency stability at low frequency. The process is easy, and is suitable for industrial production and market prospect is sound.

Seepage type wave-absorption material of barium titanate-nickel zinc ferrite composite powder and preparation method thereof

The invention discloses a seepage type wave-absorption material of barium titanate-nickel zinc ferrite composite powder, which consists of a barium titanate phase and a nickel zinc ferrite phase, wherein the content of the nickel zinc ferrite phase is 80 to 90 moles percent. The material is prepared by adopting a sol-gel in-situ forming method. The preparation process is simple; the prepared wave-absorption material of the barium titanate-nickel zinc ferrite composite powder produces a seepage effect, and has a good wave absorption performance (in a frequency range of 18 to 40GHz, the composite powdery wave-absorption material has peak value at specific frequency, and the return loss (RL) value of the material reaches from -60dB to -75dB); and the barium titanate-nickel zinc ferrite composite powder can be used for preparing a coating or mixed with other coating materials, and has wide application prospect.

柱状结构纳米硅/非晶硅碳复合光导层液晶光阀及制备方法

A liquid crystal light valve with composite optical conducting nano Si/non-crystal SiC layer having cylindrical structure is sequentially composed of the first optical glass, the first transparent electric conductive film, optical conducting layer, light barrier layer, medium reflecting layer, the first and the second LC orientating layer, the second transparent electric conductive film and the second optical glass. It features that an anisotropic composite optical conducting nano Si/non-crystal SiC layer having cylindrical structure is plated on said first transparent electric conductive film. Its advantages are less transverse diffusion of current carriers, and high resolution of LC light valve.

Nickel doped bismuth sodium titanate multiferroics and preparation method thereof

The invention discloses a bismuth sodium titanate multiple iron material with a nickel-doping, the chemical formula of the which is Na0.5Bi0.5NixTi1-xO3, wherein x is more than 0 and less than or equal to 0.0125. The preparation method includes the stepd that the oxyhydroxide precipitation of nickel, bismuth and titanium is taken as the reaction material; the sodium hydroxide with a certain concentration is added for promoting the crystallization; a sodium hydroxide is carried out for obtaining the bismuth sodium titanate multiple iron material with a nickel-doping at the temperature of 160-200 DEG C. The obtained bismuth sodium titanate multiple iron material with a nickel-doping of the invention has ferroelectricity and ferromagnetism with simple technology process, non-pollution and a low cost, as well as an easy scale production. The bismuth sodium titanate multiple iron material with a nickel-doping has a good ferroelectricity and a better ferromagnetism, thus having an applied prospect ...

Method for preparing calcium titanate nanoparticles

The invention discloses a method for preparing calcium titanate nanoparticles. The method comprises the following steps of: adding a mineralizing agent, namely potassium hydroxide, with proper concentration, into hydrothermal reaction materials, namely titanium hydroxide coprecipitate and deionized water solution of calcium nitrate; introducing solution obtained by hydrothermally decomposing glucose into a hydrothermal system to influence nucleation and control the particle size of products; and synthesizing the calcium titanate nanoparticles of which the diameter is 30 to 60nm by hydrothermal reaction. The process is simple and is easy to control; the method is environment-friendly and low in cost; and the products are easy to produce.

Method for preparing strontium titanate nanoparticles

The invention discloses a method for preparing strontium titanate nanoparticles. The method comprises the following steps of: adding a mineralizing agent, namely potassium hydroxide, with proper concentration, into hydrothermal reaction materials, namely titanium hydroxide coprecipitate and deionized water solution of strontium nitrate; introducing solution obtained by hydrothermally decomposing glucose into a hydrothermal system to influence nucleation and control the particle size of products; and synthesizing the strontium titanate nanoparticles of which the diameter is 20 to 50nm by hydrothermal reaction. The process is simple and is easy to control; the method is environment-friendly and low in cost; and the products are easy to produce.

Amorphous titanium dioxide nano dot array and preparation method thereof

The invention discloses an amorphous titanium dioxide nano dot array. The titanium dioxide of the array has an amorphous structure, the diameter of titanium dioxide nano dots is 10 to 250 nanometers, and the distribution density of the titanium dioxide nano dots is 1.0-10.0*1,010 cm<2>. A preparation method for the amorphous titanium dioxide nano dot array comprises the following steps of: dissolving titanate, water and acetylacetone into alcohol, adding polyvinylpyrrolidone into the mixture to form titanium dioxide precursor sol; and spinning the titanium dioxide precursor sol on a substrateto form a titanium dioxide precursor nano dot array sol film, and obtaining the amorphous titanium dioxide nano dot array on the substrate by ageing and hydrothermal process. The preparation method solves the problem of preparing the amorphous titanium dioxide nano dot array on the surface of the substrate; and the preparation method is simple, feasible and convenient to operate, and can be applied ...

Method for preparing lead zirconatetianate nano powder

Composite multi-resonance adsorption titanium-doped barium ferrite wave-absorbing material and preparation method thereof

The invention discloses a composite multi-resonance adsorption titanium-doped barium ferrite wave-absorbing material. The material has a homologous synthetic structural characteristic as follows: xBaTiFe<12-n>O19+(1-x)BaTiFe<12-m>O19, wherein the x is 0.2-0.7, the n is 0.2-0.6, the m is 0.4-1.0, the m is not equal to the n, and the doped ion is Ti<4+>. Materials with different intrinsic parameter peak values are synthesized into a composite system, and each intrinsic parameter in the formed wave absorbing system has a corresponding different matching resonance frequency, thus obtaining the composite multi-resonance adsorption material with multi-resonance wave adsorption characteristics. The material is simple in preparation process and low in cost. Multiple adsorption peaks appear in an R wave band frequency range (26.5-40 GHz). The composite multi-resonance adsorption titanium-doped barium ferrite wave-absorbing material is wide in wave adsorption frequency band, and can be widely ...

Nanometer Ag particle-(Ba0.65, Sr0.35)TiO3 seepage-type composite ceramic film and preparation method thereof

The invention discloses a nanometer Ag particle-(Ba0.65, Sr0.35)TiO3 seepage-type composite ceramic film and a preparation method thereof. The ceramic film takes polycrystal perovskite phase ceramic as a substrate in which nanometer Ag particles are distributed, the polycrystal perovskite phase ceramic is (Ba0.65, Sr0.35)TiO3, and the molar ratio of nanometer Ag to (Ba0.65, Sr0.35)TiO3 is (0.2-0.6):1. The preparation method comprises the following steps of: preparing a stable Ag-(Ba, Sr)-Ti sol precursor by taking tetrabutyl titanate, barium acetate and strontium nitrate as a Ti source, a Ba source and an Sr source, taking silver nitrate as an Ag source, taking concentrated nitric acid as a stabilizing agent, taking diacetone and citric acid as a complexing agent, and taking ethylene glycol monomethyl ether and glycol as a mixed solution; then, coating on an ITO (Indium Tin Oxide)/glass substrate with a dipping and pulling method; and preparing the composite ceramic film by air atmosphere ...

Nanometer line bottom electrode and dielectric medium composite film of capacitor and preparing method thereof

The invention discloses a nano wire bottom electrode and a dielectric compound film capacitor, wherein, a titanium silicide conductive film layer, a titanium silicide nano wire bottom electrode layer and a dielectric film layer are deposited on a substrate from the top down. The capacitor is prepared by adoption of the sol-gel method, has low requirements on equipment, and is convenient to operate and easy to realize. The dielectric compound film capacitors utilizes the high specific surface area of the titanium silicide nano wire bottom electrode, greatly increases the contact area of dielectrics and the electrode, and improves the capacitance of the film composite structure which is over three times of the capacitance of a common electrode film with the same scale.

Film for solar battery and preparation method thereof

The invention discloses a film for a solar battery. A TiO2 film and a SnO2 film are arranged on a glass substrate in sequence from bottom to top; and a chemical vapor deposition method is adopted. The film for the solar battery is provided with a SnO2 and TiO2 dual-layer compoite film system on the glass substrate, wherein a TiO2 film layer which is coated between the glass substrate and the SnO2 film in a solar battery, therefore the solar battery achieves an excellent performance of wide band and low reaction, moreover, alkaline metal ions in the glass can be blocked from diffusing and entering into a transparent conducting plate.

Method for preparing hexagonal disc shaped alpha-Fe2O3 powder

The invention relates to a preparation method of a hexagon-round disciform nanometer powder of alpha-Fe2O3. A water or solvent thermal synthesis is used for respectively dissolving an original reaction material, ferric nitrate and a mineralizer, potassium hydroxide into a mixed solvent which is composed of ethylene glycol and water; then a potassium hydroxide solution is added drop by drop into aferric nitrate solution to get a suspension liquid precursor which is used for the water or solvent thermal reaction; the suspension liquid precursor is sealed into a reactor and is processed by heattreatment for 4 hours to 36 hours at the temperature of 160 DEG C to 240 DEG C to get the hexagonal disciform nanometer powder of alpha-Fe2O3; the thickness of the powder is not more than 150 nanometers and the disk track is not less than 250 nanometers. The products of the invention have the advantages of stable quality, high purity, good particle dispersion and excellent catalyzing property; the preparation ...

Method for preparing oriented growth dielectric-constant adjustable strontium lead titanate film

Epitaxial strontium barium niobate film possessing transparent conductive lithium nickel oxide bottom electrode and its preparation method

Method for preparing density-adjustable TiO2 nanorod array

The invention discloses a method for preparing a density-adjustable TiO2 nanorod array. The diameter of TiO2 nanorods is 10-200 nm, and the density distribution range of the TiO2 nanorods is 9.4*10<2>/cm<-2> to 8.3*10<13>/m<-2>. The preparation method comprises the following steps of: (1) dissolving tetrabutyl titanate, water and acetylacetone into alcohol, and adding polyvinylpyrrolidone to form titanium dioxide precursor sol; (2) quickly spin-coating the titanium dioxide precursor sol on a substrate to form a titanium dioxide precursor nano lattice array sol film on the substrate, and putting the substrate into a muffle furnace for thermal treatment; and (3) putting the thermally treated substrate into a titanate and acid mixed water solution for hydro-thermal treatment to obtain the TiO2 nanorod array on the substrate. The preparation method is simple, and the surface wettability, the photocatalytic property and the photoelectric properties of the prepared TiO2 nanorod array can be controlled ...

Iron doped sodium-bismuth titanate multiferroics and method for producing the same

The invention relates to iron-doped sodium bismuth titanate multi-ferric material of which the chemical formula is: Na0.5Bi0.5FexTi<1 -x>O3, x is bigger than zero and less than or equal to 0.8. The preparing method comprises the steps: the oxyhydroxide precipitation of iron, the bismuth and the titanium are prepared as reaction materials; the sodium hydroxide of suitable concentration is added topromote crystallization; under a temperature ranging from 160 DEG C to 200 DEG C, the iron-doped sodium bismuth titanate multi-ferric material is obtained by hydrothermal reaction. The iron-doped sodium bismuth titanate multi-ferric material prepared by the invention has both ferroelectricity and ferromagnetism. Furthermore, the invention is simple in technical process, without pollution, low cost and easy to produce in scales. The iron-doped sodium bismuth titanate multi-ferric material has goof ferroelectricity and strong ferromagnetism and has wide application prospect in fields such as information ...

Method for preparing hexagonal disc shaped alpha-Fe2O3 powder

The invention relates to a preparation method of a hexagon-round disciform nanometer powder of alpha-Fe2O3. A water or solvent thermal synthesis is used for respectively dissolving an original reaction material, ferric nitrate and a mineralizer, potassium hydroxide into a mixed solvent which is composed of ethylene glycol and water; then a potassium hydroxide solution is added drop by drop into a ferric nitrate solution to get a suspension liquid precursor which is used for the water or solvent thermal reaction; the suspension liquid precursor is sealed into a reactor and is processed by heat treatment for 4 hours to 36 hours at the temperature of 160 DEG C to 240 DEG C to get the hexagonal disciform nanometer powder of alpha-Fe2O3; the thickness of the powder is not more than 150 nanometers and the disk track is not less than 250 nanometers. The products of the invention have the advantages of stable quality, high purity, good particle dispersion and excellent catalyzing property; the ...

Method for preparing 0.85nm hydrated kaolinite by direct replacement intercalation

The invention discloses a method for preparing a 0.85nm hydrated kaolinite by direct replacement intercalation, which comprises the following steps: preparing a mixture of a urea/kaolinite intercalation compound and excessive urea by a grinding-subsequent heat treatment process; washing with deionized water to remove the excessive urea, thereby obtaining a urea/kaolinite intercalation compound; and finally, adding the urea/kaolinite intercalation compound into hot water, stirring for a few minutes, and carrying out centrifugal drying to obtain the 0.85nm hydrated kaolinite. The 0.85nm hydrated kaolinite prepared by the method disclosed by the invention can stably exist in air for a long time, and can be used for preparing precursors of other kaolinite intercalation compounds. The adopted raw material does not pollute the environment; and the preparation technique is simple and quick, has the advantage of low cost, and can easily implement industrial production.

Titanium dioxide based composite thin film with classified nano point structure and preparation method thereof

The invention discloses a titanium dioxide based composite thin film with a classified nano point structure. A titanium dioxide nano point layer and a photosensitive semi-conductor nano point layer are arranged on a substrate from bottom to up in sequence. A sol-gel method is used for preparing the titanium dioxide based composite thin film with the classified nano point structure and comprises the following steps: spin coating a titanium dioxide precursor sol on the substrate; annealing and drying to obtain the dioxide nano point layer on the substrate; spin coating a photosensitive semi-conductor precursor sol on the dioxide nano point layer; annealing and drying to obtain the titanium dioxide based composite thin film with the classified nano point structure. The composite thin film not only has excellent photo induced hydrophily, and also has relatively large specific surface area; initial attachment, reproduction and induction of cells are facilitated; and the preparation method is ...

Method for preparing spindle shaped alpha-Fe2O3 powder

The invention relates to a preparation method of a fusiform nanometer powder of alpha-Fe2O3. A water or solvent thermal synthesis is used for respectively dissolving an original reaction material, ferric nitrate and a mineralizer, potassium hydroxide into a mixed solvent which is composed of ethylene glycol and water; then a potassium hydroxide solution is added drop by drop into a ferric nitrate solution to get a suspension liquid precursor which is used for the water or solvent thermal reaction; the suspension liquid precursor is sealed into a reactor and is processed by heat treatment for 4 hours to 36 hours at the temperature of 160 DEG C to 240 DEG C to get the fusiform nanometer powder of alpha-Fe2O3; the length of the kernel is not less than 200 nanometers and the largest diameter is not less than 100 nanometers. The products of the invention have the advantages of stable quality, high purity, good particle dispersion and excellent catalyzing property; the preparation process is ...

Preparation method of iron-doped lead titanate single-crystal nanofibre with one-dimensional columnar structure

The invention relates to a preparation method of an iron-doped lead titanate single-crystal nanofibre with a one-dimensional columnar structure. The method adopts a hydrothermal reaction method and comprises the following steps: taking ethylene glycol monomethyl ether as a solvent for dissolving titanium ions and iron ions, and utilizing ammonia water as a precipitant for precipitating the titanium ions and the iron ions; utilizing a surface modifier-polyvinyl alcohol to realize regulation and control on growth direction; and finally, utilizing a mineralizing agent-potassium hydroxide for promoting crystallization so as to realize the synthesis of the iron-doped lead titanate single-crystal nanofibres with a one-dimensional columnar structure. The preparation method disclosed by the invention has the advantages that the process procedure is simple, the control is easy, no pollution is caused, the cost is low, large-scale production is easy, and the prepared iron-doped lead titanate single-crystal ...

Preparation method of nanometer barium zirconate

The invention discloses a method for preparing nano barium zirconate, comprising the following steps that: the zirconic oxyhydroxide precipitation and a de-ionized water solution of barium acetate are prepared and are taken as reaction raw materials, a mixing solution of quadrol and mono ethanolamine, diethanolameine or trolamine is taken as a solvent, potassium hydrate with an appropriate concentration is added to accelerate the crystallization at a temperature of between 150 and 230 DEG C, the thermal reaction is performed on the solvent and the barium zirconate nano powder body with good dispersivity is obtained. The method has the advantages of simple process, easy control, low cost and easiness for mass production. The prepared nano powder body has good crystallinity and dispersivity and narrow grain size distribution; moreover, the grain diameter can be adjusted by changing the technological parameter. The product has wide application prospect in the fields such as a microelectronic ...

Method for preparing fluorapatite/hydroxyapatite sosoloid nano-powder

The present invention discloses a preparation method of fluorapatite/hydroxylapatite solid solution nanometer powder. The method takes calcium compound and part esterification phosphate or organic phosphate alcohol solution as the base and then adds fluoride compounds and organic amine so as to synthesize the fluorapatite/hydroxylapatite solid solution nanometer powder by the method of sol combustion self-spreading. The present invention solves the problems that the fluorapatite/hydroxylapatite solid solution nanometer powder is hard to prepare, and the fluorine content and the existence state of the fluorine are difficult to control, etc. The preparation method provided by the present invention has the advantages of simple operation, low cost and being easy for industrialization.

Zirconium and titanium-co-doped barium ferrite wave-absorbing powder material and preparation method therefor

The invention discloses a zirconium and titanium-co-doped barium ferrite wave-absorbing powder material. The chemical formula is BaFe(12-x)ZrxTixO19, wherein x is equal to 0.2-0.4. The zirconium and titanium-co-doped barium ferrite is single-phase polycrystalline powder, and Fe<3+> and Fe<2+> exist in the barium ferrite at the same time. A preparation method comprises the following step of preparing the zirconium and titanium-co-doped barium ferrite wave-absorbing powder material by virtue of a self-propagating combustion method which is combined with ball-milling and a sequential secondary vacuum high-temperature thermal treatment process. The wave-absorbing material disclosed by the invention has the characteristics of being strong in absorption loss, wide in wave absorbing bandwidth, thin in match thickness and wide in modulated wave-absorbing frequency range. The effective wave absorbing bandwidth is controlled in a frequency range of 18-40GHz, double absorption peaks appear, the maximum ...

Preparation method of coated glass with self-cleaning and energy-saving functions

The invention discloses a preparation method of coated glass with self-cleaning and energy-saving functions. In the preparation method, the surface of a TiN film is partially oxidized by using a heat treatment process based on the normal pressure chemical vapor deposition process, non-conducting titanium dioxide nano particles are formed on the surface so as to form a special surface structure, and the surface structure has the self-cleaning and energy-saving functions. The method has the advantages of simple preparation process, low cost and high efficiency.

Titanium silicide nano-nail prepared by chemical vapor deposition under normal pressure and preparation method thereof

The invention discloses a titanium silicide nanometer nail prepared with normal pressure chemical vapour deposition method and the method. Setting a nanometer nail head on one end of nanometer line body, the other end connected with the nanometer nail head by transition zone. The method applies normal pressure chemical vapour deposition method, takes SiH4 and TiCl4 as reactant prosoma and takes N2 as diluent gas and protective atmosphere. Firstly, forming a matallic silicide film on a glass base slab, then forming silicide nanometer nail on the flim. The method has the low requirement to an apparatus, but has big output and high efficiency. The present physical vapour deposition method hasn't prepared the matallic silicide nanometer nail; the method doesn't use mold plates and catalyzer, can quickly produce a mass of monocrystalline titanium silicide nail; by changing preparing condition, all kinds of nanometer nail can be gotten; by changing mole ratio of reactant, the nanometer nail with ...

Nano Ag particle-Pb(Zr0.52Ti0.48)O3 filtration type composite ceramic film and preparation method thereof

The invention discloses a nano Ag particle-Pb(Zr0.45Ti0.48)O3 filtration type composite ceramic film and a preparation method thereof. In the composite ceramic film, polycrystalline perovskite phase ceramic is used as a substrate, and nano-silver particles are dispersed in the substrate, wherein the polycrystalline perovskite phase ceramic is Pb(Zr0.52Ti0.48)O3, and the molar ratio of the nano-silver to the Pb(Zr0.52Ti0.48)O3 is (0.2-0.8):1. The preparation method comprises the following steps of: preparing a Ag-Pb-Zr-Ti source containing sol precursor required by the composite film; and coating on an ITO (indium tin oxide)/glass substrate by applying a dip-coating method, and sintering in an air atmosphere to prepare the film, wherein a Ti source, a Zr source, a Pb source and a Ag sourcein the sol precursor are respectively tetrabutyl titanate, zirconium nitrate, lead acetate trihydrate and silver nitrate; the complexing agent is acetylacetone and citric acid; and the solvent is ethylene ...

Amorphous Sb-doped zinc tartrate micro-nano spheres and preparation method thereof

The invention discloses amorphous Sb-doped zinc tartrate micro-nano spheres. The diameters of the micro-nano spheres are 300-1200nm, and the atom percent of Sb and Zn is 0.06-15.0%. The preparation method comprises the following steps: (1) dissolving zinc nitrate and hexamethylenetetramine in water, adding equal mol of antimony ions and tartrate, and evenly stirring to obtain growth mother liquor for hydrothermal reaction; and (2) putting the growth mother liquor into a reaction kettle, keeping the temperature of 80-120 DEG C for 0.5-5 hours, standing, taking the precipitate, repeatedly flushing, centrifugalizing and drying. The invention has the advantage of simple preparation technique, and the particle sizes and the doping amount of the Sb-doped zinc tartrate micro-nano spheres can be regulated within a certain range.

Surface mount method of mineralized collagen gradient coating for medical titanium implant

The invention relates to a surface mount method of mineralized collagen gradient coating for medical titanium implant. Based on the effect of voltage and electrolyte composition on in-situ biomineralization self-assembly of collagen in electrolyte, permineralized calcium phosphate layer, mineralized collagen layer and unmineralized pure collagen layer are assembled from the titanium substrate upward in profile by electrochemical codeposition technology. The components and structure of the above product are similar to those of natural bones. The product of good biocompatibility and biological responsiveness can accelerate the osteointegration of implanted area and shorten the period of treatment. The strong binding force between the coating and the titanium substrate prevents the occurrence of coating shedding due to friction stress during the process of implantation. The coating provided by the invention is applicable to clinical applications.

Epitaxy strontium lead titanate film with LiNiO2 cushioning layer

Preparation method of non-sizing nano-calcium phosphate powder for medical slow release metal ion

Nickel doped bismuth sodium titanate multiferroics and preparation method thereof

The invention discloses a bismuth sodium titanate multiple iron material with a nickel-doping, the chemical formula of the which is Na0.5Bi0.5NixTi1-xO3, wherein x is more than 0 and less than or equal to 0.0125. The preparation method includes the stepd that the oxyhydroxide precipitation of nickel, bismuth and titanium is taken as the reaction material; the sodium hydroxide with a certain concentration is added for promoting the crystallization; a sodium hydroxide is carried out for obtaining the bismuth sodium titanate multiple iron material with a nickel-doping at the temperature of 160-200 DEG C. The obtained bismuth sodium titanate multiple iron material with a nickel-doping of the invention has ferroelectricity and ferromagnetism with simple technology process, non-pollution and a low cost, as well as an easy scale production. The bismuth sodium titanate multiple iron material with a nickel-doping has a good ferroelectricity and a better ferromagnetism, thus having an applied prospect ...

Liquid crystal light valve using crystalline silicon film light stopping layer and its manufacture method

Liquid crystal light valve features use of crystal silicon film as light barrier to solve the problem of lattice mismatch. Said light barrier and photoconducting layer of non-crystal silicon film are prepared in the same reactor by use of glow discharge, plasma chemical gas deposition method to obtain a better heterojuction, which can improve resolution and contrast of light valve.

Method for preparing porous balls of strontium titanate

This invention discloses a method for preparing porous strontium titanate spheres. The method comprises: preparing titanium oxyhydroxide precipitate and deionized water solution of strontium as the reactants, adding KOH with an appropriate concentration to promote crystallization, adding poly(vinyl alcohol) surfactant with an appropriate concentration to control the morphology, and performing hydrothermal reaction at 150-200 deg.C to obtain monodispersed porous strontium titanate spheres. The method has such advantages as simple process, easy control of pore size and specific surface area, no pollution and low cost, and is suitable for mass production. The obtained porous strontium titanate spheres have such advantages as stable crystal quality, high powder dispersibility and large specific surface area, and can be used in microelectronics, catalysts, solar cells, sensors and luminescent materials.

On-line preparation method of surface graded oxidation low-reflection nano-silicon coated glass

The invention discloses an online method for preparing low-reflection nano-silicon coated glass with a gradient oxidized surface. The nano-silicon coated glass formed on line in a tin channel on the production line of float glass is continuously sent into an annealing furnace and is heat-treated under constant temperature for 1-3 minutes in high-temperature area of the annealing furnace so as to prepare the low-reflection nano-silicon coated glass with a gradient oxidized surface. The low-reflection nano-silicon coated glass with the gradient oxidized surface prepared through the method of the invention has reflectivity below 15 percent, thus effectively reducing optical pollution to the environment during the application of the coated glass.

Preparation method of iron-doped lead titanate single-crystal nanofibre with one-dimensional columnar structure

The invention relates to a preparation method of an iron-doped lead titanate single-crystal nanofibre with a one-dimensional columnar structure. The method adopts a hydrothermal reaction method and comprises the following steps: taking ethylene glycol monomethyl ether as a solvent for dissolving titanium ions and iron ions, and utilizing ammonia water as a precipitant for precipitating the titanium ions and the iron ions; utilizing a surface modifier-polyvinyl alcohol to realize regulation and control on growth direction; and finally, utilizing a mineralizing agent-potassium hydroxide for promoting crystallization so as to realize the synthesis of the iron-doped lead titanate single-crystal nanofibres with a one-dimensional columnar structure. The preparation method disclosed by the invention has the advantages that the process procedure is simple, the control is easy, no pollution is caused, the cost is low, large-scale production is easy, and the prepared iron-doped lead titanate single-crystal ...

Liquid crystal light valve with crystalline state silicon film light-proof layer and its making method

Preparation method of barium-doped lead titanate monocrystal nano fiber with one-dimensional column structure

The invention relates to a preparation method of a barium-doped lead titanate monocrystal nano fiber with a one-dimensional column structure, which adopts a hydro-thermal reaction method comprising the steps of: with ethylene glycol monomethyl ether as a solvent for dissolving titanium ions, precipitating titanium ions by using aqueous ammonia as a precipitator; controlling the growing direction by utilizing polyving akohol as a surface modifier; and finally promoting crystallization by utilizing potassium hydroxide as a mineralizer to synthesize the barium-doped lead titanate monocrystal nano fiber with the one-dimensional column structure. The preparation method of the barium-doped lead titanate monocrystal nano fiber with the one-dimensional column structure has a simple technical process and low cost, is easy to control and produce in batch, and does not cause pollution; and the prepared barium-doped lead titanate monocrystal nano fiber with the one-dimensional column structure has ...

Cobalt material doping with ferrous acid bismuth multi-iron and preparation method thereof

The invention discloses cobalt doping bismuth ferric material, the chemical formula of which is BicoxFe1-xO3; x is not more than 0.07 while is more than 0. The preparation method is that: oxyhydroxide precipitation of iron, bismuth and cobalt is made as the reaction material; potassium hydroxide with suitable concentration is added to promote crystallization; cobalt doping bismuth ferric powder is then obtained by hydrothermal reaction under the temperature of 120 degrees to 200 degrees. The invention dramatically enhances the magnetism of the bismuth ferric by doping cobalt; furthermore, the invention has simple technique, has no pollution, low cost and is suitable for mass production. The cobalt doping bismuth ferric material of the invention has stable crystallization quality and has wide application prospect in the fields such as information storage, satellite communication, precise control, circuit measurement of high voltage transmission lines and magnetoelectric sensors.

Epitaxy strontium lead titanate film with LiNiO2 cushioning layer

Nano-silver/bismuth ferrite composite film and preparation method thereof

The invention discloses a nano-silver/bismuth ferrite composite film. The matrix is bismuth ferrite, and nano-silver particles are dispersed in the bismuth ferrite matrix. According to a preparation method of the composite film, the composite film is mainly prepared with a sol-gel method in combination with a follow-up heat treatment process. The evenly dispersed nano-sliver particles are introduced into the bismuth ferrite film matrix with the sol-gel method in combination with heat treatment, so that the nano-silver/bismuth ferrite composite film is formed. The composite film has the typical magnetic property and has the higher dielectric property, compared with the dielectric constant of a silver-free bismuth ferrite film, the dielectric constant of the composite film is increased by 2-4 times, and the composite film has important significance in application and popularization of multiferroic materials in high performance and miniaturization of electronic devices. Besides, the method ...

Method for preparing lead titanate nanosheet and cadmium sulfide nano-particle composite material

The invention relates to a method for preparing a lead titanate nanosheet and cadmium sulfide nano-particle composite material. According to the method, a wet chemical reaction method is adopted. The method comprises the following steps: by taking titanium dioxide as a raw material, by taking potassium hydroxide as a mineralizer, promoting crystallization, dropwise adding an aqueous solution of lead nitrate, carrying out a hydrothermal reaction, and realizing synthesis of titanium ore lead titanate monocrystalline nanosheets; by adopting an aqueous solution of cadmium chloride and thioacetamide and the synthesized perovskite lead titanate monocrystalline nanosheets as reaction materials, carrying out a secondary hydrothermal reaction, thereby synthesizing a composite nanometer structure of lead titanate nanosheets and cadmium sulfide nano-particles. The method is simple in process, easily controllable in process, pollution-free and low in cost. In addition, the prepared lead titanate nanosheet ...

Nano-silicon composite carbon coated glass and quick-response on-line preparation method thereof

The invention discloses a nano-silicon compounded carbon coated glass and a fast-reaction online preparation method. The nano-silicon compounded carbon coated glass consists of glass substrates and films. The films are nano-silicon and nano-SiC compounded amorphous silicon carbide; wherein, the volume percentage of the nano-silicon, the nano-SiC and the amorphous silicon carbide is 40-45:0-5:50-60; the nano-silicon compounded carbon coated glass of the invention has relatively low reflectivity to visible light, corrosion resistance and wear resistance and low cost; the fast-reaction online preparation method of the invention utilizes thermal energy in the production to directly on line prepare the nano-silicon compounded carbon coated glass in a glass softening temperature area, thus realizing online production with low energy consumption.

Method for preparing lead titanate nanoparticles

The invention discloses a method for preparing lead titanate nanoparticles, comprising the following steps of: with titanium oxyhydroxide coprecipitate and a lead nitrate deionized aqueous solution as hydro-thermal reaction materials, adding mineralizer potassium hydroxide with appropriate concentration, introducing a glucose hydro-thermal decomposed solution in a hydro-thermal system to influence nucleation, controlling the particle size of a product, and carrying out a hydro-thermal reaction to synthesize lead titanate nanoparticles with the diameter of 30-60nm. The method disclosed by the invention has the advantages of simple and easily controllable technological process, no pollution, low cost and easiness in production.

Method for preparing TiN nano-powders

The invention discloses a method for preparing TiN nano-powder, which adopts a chemical vapor deposition process. A cleaned substrate is put into a vapor deposition reaction chamber; NH3 and preheated Ti source are directed to the reaction chamber by taking inert gas as carrier gas to prepare the TiN nano-powder. The method of the invention has simple process, low production cost, continuous production, high efficiency and high yield, with the size and the shape of the particle capable of being controlled conveniently and effectively; the TiN nano-powder produced has even particles, and can be spherical, cubic and nanorod-shaped, etc.

Nano-silicon composite carbon coated glass and quick-response on-line preparation method thereof

The invention discloses a nano-silicon compounded carbon coated glass and a fast-reaction online preparation method. The nano-silicon compounded carbon coated glass consists of glass substrates and films. The films are nano-silicon and nano-SiC compounded amorphous silicon carbide; wherein, the volume percentage of the nano-silicon, the nano-SiC and the amorphous silicon carbide is 40-45:0-5:50-60; the nano-silicon compounded carbon coated glass of the invention has relatively low reflectivity to visible light, corrosion resistance and wear resistance and low cost; the fast-reaction online preparation method of the invention utilizes thermal energy in the production to directly on line prepare the nano-silicon compounded carbon coated glass in a glass softening temperature area, thus realizing online production with low energy consumption.

Sb-ZnO-doped mico-nano sphere and preparation method of Sb-ZnO-doped mico-nano sphere

The invention discloses an Sb-ZnO-doped mico-nano sphere, of which the diameter is 300-1200nm, and the atomic percent of Sb to Zn is 0.06%-15.0%. A preparation method of the Sb-ZnO-doped mico-nano sphere includes the steps as follows: dissolving zinc nitrate and hexamethylene tetramine in water; adding equimolar stibium ion and tartrate, and stirring to be uniform to obtain growing mother liquor of hydrothermal reaction; placing the growing mother liquor in a kettle and keeping temperature for 0.5-5h at the temperature of 80-120 DEG C; standing; later, repeatedly flushing, centrifugating and drying a precipitate; and conducting heat treatment at the temperature of 500-800 DEG C. The preparation technology is simple, and the size of the Sb-ZnO-doped mico-nano sphere and the doping quantity are adjustable within a certain range.

Epitaxial strontium barium niobate film possessing transparent conductive lithium nickel oxide bottom electrode and its preparation method

High-percolation-threshold composite ceramic with NZFO crystalline grains being isolated in situ by BTO crystalline phase and preparation method thereof

The invention discloses high-percolation-threshold composite ceramic with NZFO crystalline grains being isolated in situ by a BTO crystalline phase and a preparation method thereof. The high-percolation-threshold composite ceramic is shown as (1-x)BaTiO3/xNi0.5Zn0.5Fe2O4, wherein x is more than or equal to 0.9 and less than or equal to 0.95. An NZFO crystalline phase is taken as a major phase, and NZFO crystalline grains are completely and uniformly coated with the BTO crystalline phase in the form of crystal, so that ferroelectric/ferromagnetic dual-phase composite ceramic is formed. The preparation method comprises the following steps: firstly, preparing BTO/NZFO composite powder; secondly, performing press molding and sintering at a temperature lower than a highest dense sintering temperature to obtain BTO/NZFO composite ceramic; thirdly, raising the sintering temperature, fully melting the low-content BTO phase to a liquid state, fully isolating the NZFO phase crystalline grains, rapidly ...

A method for nano TiO2 polymerization synergistic modification of natural pearls

Similar bone biology medical material for slow releasing bioactivity factor as well as its preparing method

The invention discloses bone-like bio-medical material of a slow-release bioactive factor, the bone-like bio-medical material consists of a medical metal transplant body and the bone-like bioactive coating of the slow-release bioactive factor, and the bone-like bioactive coating is coated on the surface of the medical metal transplant body. The invention adopts an electrolytic deposition method to prepare, electrolyte solution contains calcium, a phosphorous compound, bone matrix collagen and the bioactive factor, the medical metal transplant body is taken as a working electrode, platinum is taken as a reference electrode, through the electrode reaction, the bone-like bioactive coating of the slow-release bioactive factor is deposited on the surface of the medical metal transplant body. Compared with the pure inorganic coating, through the adoption of the invention method, the bioactive coating acquired on the surface of the metal transplant body is similar to a natural bone in the component ...

Lead titanate nanotube with one-dimensional crystal structure and preparation method thereof

The invention discloses a lead titanate nanotube with a one-dimensional crystal structure, which has the characteristics as follows: (a) a space group is I4/m; (b) cell parameters show that each PbTiO3 unit cell is composed of forty atoms, wherein, Pb:Ti:O=1:1:3; and (c) x, y, and z space positions of a lead atom, a titanium atom and an oxygen atom in each unit cell are respectively as follows: Pb (0.165, 0.151 and 0.5), Ti (0.471, 0.142 and 0.5), O1 (0.605, 0.028 and 0.5), O2 (0.169, 0.289 and 0.0) and O3 (0.543, 0.260 and 0.5). The lead titanate nanotube prepared by a hydrothermal method has the one-dimensional crystal structure, high purity, good crystallization stability and good dispersibility, and has wide application prospect in the fields such as microelectronic devices, drivers, sensors and the like. The preparation method of the invention has simple equipment, easy control of process conditions, low cost and easy industrialized production.

Zn doped PST film with adjustable dielectric constant and its preparation process

Method for preparing bilaminar composite film of aluminum / hydrogenized amorphous silicon carbon alloy

Method for preparing barium titanate nanometer powder under room temperature

The invention discloses a method for preparing a barium titanate nano-powder at room temperature, which comprises the following steps: preparing the oxyhydroxide precipitate of titanium and the deionized aqueous solution of barium acetate as reaction materials, taking ethylene diamine solution or the mixed solution of ethylene diamine and ethanolamine as solvent, adding potassium hydroxide with a suitable viscosity to promote crystallization and obtaining the barium titanate nano-powder with a good dispersion after magnetically stirring for a certain period of time at room temperature. The method has the advantages of exemption from high temperature processing, energy conservation and environment-protection, simple process, easy control, low cost and easy scale production. The prepared product has the advantages of high purity, good dispersion and narrow size distribution which can be adjusted by changing technological parameters. The product has a wide application prospect in the fields ...

Seepage type barium titanate-nickel zinc ferrite composite ceramic wave absorption material and preparation method thereof

The invention discloses a seepage type barium titanate-nickel zinc ferrite composite ceramic wave absorption material. The barium titanate phase encircles the nickel zinc ferrite phase, and the content of the nickel zinc ferrite phase is 70 to 90 mol percent. A preparation method comprises the following steps of: preparing a composite phase powder precursor by using a sol-gel method, and then further sheeting and sintering the composite phase powder to form the seepage type ceramic composite phase wave absorption material. The process is simple, the prepared composite ceramic wave absorption material has good wave absorption performance (in a frequency range of 18 to 40GHz, the composite ceramic wave absorption material has peak value in specific frequency and the return loss (RL) value of the material is -40 to -70dB), and the barium titanate-nickel zinc ferrite composite ceramic wave absorption material can be directly used as an engineering material and has broad application prospect ...

Preparation method of one-dimensional lead titanate/cadmium sulfide composite nano structure

The invention relates to a preparation method of a one-dimensional lead titanate/cadmium sulfide composite nano structure. By adopting a wet chemistry method, the method comprises the following steps: firstly, with ethylene glycol monomethyl ether as a solvent, precipitating titanium ions by using ammonium hydroxide as a precipitator to obtain oxyhydroxide of titanium; with oxyhydroxide of titanium and lead nitrate as raw materials, adding polyvinyl alcohol and potassium hydroxide, and carrying out hydrothermal reaction to obtain a one-dimensional lead titanate nanofiber; carrying out annealing treatment on the obtained product, so as to obtain a tetragonal lead titanate single crystal nanofiber; and finally utilizing cadmium chloride, a thiourea solution and the tetragonal lead titanate nanofiber as reaction materials and carrying out secondary hydrothermal reaction to obtain the one-dimensional lead titanate/cadmium sulfide composite nano structure. The method disclosed by the invention ...

Method for preparing titanium dioxide nano rod array with adjustable size and density on titanium surface

The invention discloses a method for preparing titanium dioxide nano rod array with adjustable size and density on titanium surface. Firstly, titanium surface in situ forms a seed crystal containing at least one of crystalline phase seed crystal and rutile crystalline phase seed crystal, and the titanium dioxide nano rod array is obtained by growing with the hydrothermal process. The titanium dioxide nano rod array prepared with the method of the invention regularly grows at a fixed direction, nano rod size is 10-500nm, density is controllable between 1*1012/m2 and 5*1014/m2, and the titanium substrate is tightly combined with the nono rod. The invention is suitable for fields, such as photocatalysis material energy environment, bone tissue repairing material biomedicine and the like.

On-line preparation method of surface graded oxidation low-reflection nano-silicon coated glass

The invention discloses an online method for preparing low-reflection nano-silicon coated glass with a gradient oxidized surface. The nano-silicon coated glass formed on line in a tin channel on the production line of float glass is continuously sent into an annealing furnace and is heat-treated under constant temperature for 1-3 minutes in high-temperature area of the annealing furnace so as to prepare the low-reflection nano-silicon coated glass with a gradient oxidized surface. The low-reflection nano-silicon coated glass with the gradient oxidized surface prepared through the method of the invention has reflectivity below 15 percent, thus effectively reducing optical pollution to the environment during the application of the coated glass.

Iron doped sodium-bismuth titanate multiferroics and method for producing the same

The invention relates to iron-doped sodium bismuth titanate multi-ferric material of which the chemical formula is: Na0.5Bi0.5FexTi<1 -X>O3, x is bigger than zero and less than or equal to 0.8. The preparing method comprises the steps: the oxyhydroxide precipitation of iron, the bismuth and the titanium are prepared as reaction materials; the sodium hydroxide of suitable concentration is added to promote crystallization; under a temperature ranging from 160 DEG C to 200 DEG C, the iron-doped sodium bismuth titanate multi-ferric material is obtained by hydrothermal reaction. The iron-doped sodium bismuth titanate multi-ferric material prepared by the invention has both ferroelectricity and ferromagnetism. Furthermore, the invention is simple in technical process, without pollution, low cost and easy to produce in scales. The iron-doped sodium bismuth titanate multi-ferric material has goof ferroelectricity and strong ferromagnetism and has wide application prospect in fields such as information ...

Nano Ag particle-(Pb0.4Sr0.6)TiO3 solid solution seepage-type composite ceramic film and preparation method thereof

The invention discloses a nano Ag particle-(Pb0.4Sr0.6)TiO3 solid solution seepage-type composite ceramic film and a preparation method thereof. The substrate of the ceramic film is polycrystalline perovskite phase ceramics in which nano silver particles scatter. The polycrystalline perovskite phase ceramics is Pb0.4Sr0.6TiO3 and the mol ratio of nano silver to Pb0.4Sr0.6TiO3 is 0.3-0.8:1. The preparation method comprises the following steps: successfully preparing an required sol precursor containing a Ag-Pb-Sr-Ti source; coating on an ITO (indium tin oxide)/glass substrate by a dip-coating method; and sintering in the air to prepare the film. By the method disclosed by the invention, a small-scale nano particle can be prepared by heat treatment in the air and the dispersity of the nano particle in the (Pb0.4Sr0.6)TiO3 film can be ensured, the seepage effect is realized. The permittivity of the film is 2 to 5 times that of apure strontium lead titanate film.

Method for preparing zirconium-doped lead titanate single crystal nanofiber with one-dimensional columnar structure

The invention relates to a method for preparing a zirconium-doped lead titanate single crystal nanofiber with a one-dimensional columnar structure. In the method, a hydrothermal reaction method is adopted, ethylene glycol methyl ether is taken as a solvent for dissolving titanium ions and zirconium ions, and ammonia water is taken as a precipitating agent and used for precipitating the titanium ions and the zirconium ions; the growth direction is regulated by a surface modifier, namely polyvinyl alcohol; and crystallization is promoted by a mineralizing agent, namely potassium hydroxide, and the zirconium-doped lead titanate single crystal nanofiber with the one-dimensional columnar structure is synthesized. The process is simple, easy to control, environment-friendly, low in cost, and suitable for mass production; and the prepared zirconium-doped lead titanate single crystal nanofiber with the one-dimensional columnar structure has high purity and dispersibility.

Nickel zinc ferrite material and preparation method thereof

Method for modifying medical metallic grafting body surface collagen by galvano-chemistry method

The present invention discloses a method for modifying the surface collagen of the medical metal graft with electrochemical method. The method uses the medical metal graft as a working electrode, platinum as a reference electrode, and the collagen molecules are self-assembled to collagen fiber with the electrode reaction and adhered to the surface of the medical metal graft to form the collagen fiber layer in the electrolyte solution dissolved with collagen molecules. The collagen which works as the essential component of the cell epimatrix can effectively increase the bioavailability and bioactivity on the surface of the medical metal. The collagen modifying medical metal graft obtained by the method of the invention settles the disadvantages of limited surface bioactivity of the commercial medical metal biological graft, not facilitating the restoring of the tissue and long curing time, etc. The invention has the advantages of simple preparing technique, highly effective and easy industrialization ...

Liquid crystal hight valve by using transitional modified structure non-crystal silicon photosensitive layer

The said liquid crystal light valve has no opaque layer, and both the receiption of optical write-in signal and the absorption of interference light are completed by photosensitive layer. The said photosensitive layer is a semiconductor material of a -Si:H noumenon structure modified in the thickness direction. The said photosensitive layer may produce quasi p-n or p-i juction effect and obvious photo-capacitance so that its resolution limit controlled by carrier diffusion may be raised.

Heterogeneous layered mineralized coating on surface of medical implant and preparation method thereof

The invention discloses a heterogeneous layered mineralized coating on the surface of a medical implant. The surface of the medical implant is sequentially provided with a dense chitosan layer, a porous mineralized chitosan layer and a mineralized collagen/chitosan cross-linking layer from bottom to top. With Collagen, chitosan, a calcium-containing compound and a phosphorus-containing compound as raw materials, the heterogeneous layered mineralized coating is assembled once on the surface of a medical metal basal body through electrochemical reaction in a water solution, and the deposition state of each phase can be adjusted by adjusting the electrolytic deposition parameter, therefore, the heterogeneous layered mineralized coating is prepared. The method provided by the invention is simple and feasible and high in controllability; the medical material coating prepared with the method can promote the attachment and the propagation of cells on the surface of the coating and has a function ...

Multi-resonance absorption zirconium-doped barium ferrite broadband wave-absorbing material and preparation method thereof

The invention discloses a multi-resonance absorption zirconium-doped barium ferrite broadband wave-absorbing material having an expression formula of xBaZr[n]Fe[12-n]O[19]+(1-x)BaZr[m]Fe[12-m]O[19], wherein x is 0.1-0.9, n is 0.1-0.2, m is 0.3-0.5, and m is not equal to n. A preparation process comprises the steps: preparing a BaZr[n]Fe[12-n]O[19] powder; preparing a BaZr[m]Fe[12-m]O[19] powder; and then mixing and grinding the BaZr[n]Fe[12-n]O[19] powder and the BaZr[m]Fe[12-m]O[19] powder. A composite system is formed by the materials having different intrinsic parameter peak values, intrinsic parameters in the formed wave-absorbing system have corresponding different characteristic resonance frequencies, the appearing range of the resonance frequency of the composite material is greater than the appearing ranges of the own resonance frequencies of the compositing single-phase materials. The wave-absorbing material can be widely applied to the corresponding electromagnetic protection ...

Method for preparing fluorapatite/hydroxyapatite sosoloid nano-powder

The present invention discloses a preparation method of fluorapatite/hydroxylapatite solid solution nanometer powder. The method takes calcium compound and part esterification phosphate or organic phosphate alcohol solution as the base and then adds fluoride compounds and organic amine so as to synthesize the fluorapatite/hydroxylapatite solid solution nanometer powder by the method of sol combustion self-spreading. The present invention solves the problems that the fluorapatite/hydroxylapatite solid solution nanometer powder is hard to prepare, and the fluorine content and the existence state of the fluorine are difficult to control, etc. The preparation method provided by the present invention has the advantages of simple operation, low cost and being easy for industrialization.

Surface mount method of mineralized collagen gradient coating for medical titanium implant

The invention relates to a surface mount method of mineralized collagen gradient coating for medical titanium implant. Based on the effect of voltage and electrolyte composition on in-situ biomineralization self-assembly of collagen in electrolyte, permineralized calcium phosphate layer, mineralized collagen layer and unmineralized pure collagen layer are assembled from the titanium substrate upward in profile by electrochemical codeposition technology. The components and structure of the above product are similar to those of natural bones. The product of good biocompatibility and biological responsiveness can accelerate the osteointegration of implanted area and shorten the period of treatment. The strong binding force between the coating and the titanium substrate prevents the occurrence of coating shedding due to friction stress during the process of implantation. The coating provided by the invention is applicable to clinical applications.

Biodegradable calcium phosphate/collagen composite materials for medical use and method for preparation thereof

The present invention discloses one kind biodegradable medical composite calcium phosphate/collagen material and its preparationpr. The composite calcium phosphate/collagen material consists of nanometer level calcium phosphate in 50-80 wt% and collagen in 20-50 wt%, where the calcium phosphate may be amorphous calcium phosphate, alpha-tricalcium phosphate, beta-tricalcium phosphate, apatite, calcium biphosphate, composite apatite/alpha-tricalcium phosphate powder, composite apatite/beta-tricalcium phosphate powder, or composite alpha-tricalcium phosphate powder/beta-tricalcium phosphate powder. The composite calcium phosphate/collagen material has homogeneously distributed calcium phosphate, close combination between calcium phosphate and collagen, continuously adjustable degradation rate, high biocompatibility and other features, and is especially suitable for use as bone repairing material.