silicon carbide whiskers is cubic phase SiC, with the following characteristics:
1. High whisker content (99%), good diameter uniformity and high aspect ratio.
2. Whiskers are easy to disperse and can give full play to the effect of strengthening and toughening;
3. It has excellent mechanical properties, heat resistance, corrosion resistance and oxidation resistance, and can be used in high-performance cutting tools, protective coatings, ceramic and metal matrix composites and other fields.
Main applications:
Toughened metal matrix composites
Toughened ceramic matrix composites
Toughened polymer composites
Toughened coating material
Silicon carbide (SiC), silicon nitride (Si3N4) and zirconia (ZrO2) bearing materials have the characteristics of high temperature resistance, cold resistance, wear resistance, corrosion resistance, magnetoelectric insulation, oil-free self-lubrication and high speed.
As an important mechanical basic component, ceramic bearing takes the lead in the new material world due to its excellent performance that metal bearing can't match.
In the past ten years, it has been increasingly widely used in various fields of the national economy and people's livelihood.
boron nitride ceramics
The boron nitride crystal belongs to the hexagonal crystal system, which is similar to graphite in structure and performance, so it is also called "white graphite".
It has good heat resistance, thermal stability, thermal conductivity, high temperature dielectric strength, and is an ideal heat dissipation material and high temperature insulation material. Boron nitride has good chemical stability and can resist the erosion of most molten metals. It also has good self-lubrication. Boron nitride products have low hardness and can be machined with an accuracy of 1/100 mm.
Boron nitride can be used to make crucibles for smelting semiconductors and high-temperature vessels for metallurgy, semiconductor heat dissipation insulation parts, high-temperature bearings, thermowells and glass forming molds.
Silicon Nitride is a kind of advanced ceramic material with high hardness, stable structure, small thermal expansion coefficient, excellent oxidation resistance and corrosion resistance, which integrates excellent thermal and chemical properties.
Main purpose:
It is mainly used in metallurgical industry, mechanical industry, chemical industry, semiconductor, aviation, atomic energy and other industries, medical artificial joints, and all-ceramic engines.
Items
Nano-Si3N4
phase content (%)
amorphous
chemical component
N(wt%)
38.5
38.5
38.5
O(wt%)
1.25
1.25
1.25
C(wt%)
0.2
0.2
0.2
Fe(ppm)
TiB2 powder is a kind of gray black powder, and the powder particles have a complete hexagonal crystal structure. titanium diboride (TiB2) powder has high melting point, high hardness, wear resistance, acid and alkali resistance, strong thermal conductivity, excellent electrical conductivity, excellent chemical stability and thermal shock resistance, high oxidation resistance temperature, and resistance to oxidation below 1100 â??. Its products have high strength and toughness, and do not corrode molten metals such as aluminum, excellent mechanical properties at high temperature, and good electrical conductivity at high temperature.
Main purpose:
Conductive ceramic materials. It is one of the main raw materials of vacuum coating conductive evaporation boat.
Ceramic cutting tools and moulds. It can manufacture precision machining tools, drawing dies, extrusion dies, sandblasting nozzles, sealing elements, etc.
Composite ceramic materials.
Cathodic coating material for aluminum electrolytic cell.
It is made into PTC heating ceramic material and flexible PTC material, which is a good strengthening agent for A1, Fe, Cu and other metal materials.
Plasma spraying.
ceramic target
Item
chemical component(wt%)
TiB2
Ti
B
O
C
Fe
>68.2
>30.8
Alumina ceramic is a ceramic material based on alumina (Al2O3), which is used for thick film integrated circuits. Alumina ceramics have good conductivity, mechanical strength and high temperature resistance.
It should be noted that ultrasonic wave should be used for washing. Alumina ceramic is a widely used ceramic.
Because of its superior performance, it has been more and more widely used in modern society, meeting the needs of daily use and special performance.
Honeycomb ceramic heat storage body has many remarkable advantages, such as high temperature resistance, corrosion resistance, good thermal shock stability, high strength, large heat storage capacity, good thermal conductivity, etc., and its energy-saving effect and service life are greatly improved.
Regenerative high temperature air combustion is a new combustion technology with great energy saving and environmental protection effects. Honeycomb ceramic regenerator is the key component of regenerative burner, which is widely used in various furnaces, such as heating furnaces, hot blast furnaces, heat treatment furnaces, cracking furnaces, roasters, melting furnaces, soaking pits, oil and gas boilers, etc. in steel, machinery, building materials, chemistry, petrochemical, coating, non-ferrous metal smelting and other industries.
This technology makes the two regenerators alternately absorb heat and release heat through the reversing device to maximize the heat recovery of flue gas, and then heats the combustion air and gas in the furnace to more than 1000 Even the inferior fuel with low calorific value can achieve stable ignition and efficient combustion, which can save fuel up to 25% - 30%, increase the output by more than 15%, reduce the oxidation burning loss of steel billet by more than 40%, and reduce the flue gas temperature of NOx emission less than 100 ppm to less than 150 The greenhouse effect of the earth's atmosphere has been greatly reduced. If most industrial kilns in the country adopt HTAC technology, its economic and social benefits are immeasurable, which will greatly alleviate the situation of energy shortage and greatly improve the living environment of human beings.
shaft sleeve
material: silicon nitride
Silicon nitride shaft sleeve, wear-resistant, impact resistant, hardness higher than steel
Silicon nitride (Si3N4), is an important structural ceramic material. It is a kind of superhard material, which has lubricity and wear resistance, and is atomic crystal; Oxidation resistance at high temperature. Moreover, it can resist cold and hot shock, and it will not break when heated to 1000 or more in the air, and then cooled and heated sharply. It is precisely because silicon nitride ceramics have such excellent characteristics that people often use it to manufacture mechanical components such as bearings, gas turbine blades, mechanical seal rings, permanent molds, pump bushings, etc.
ceramic nozzle
Material: zirconia
Special size can be produced according to customer's drawings or samples
Zirconia has high strength, wear resistance and flexibility, far surpassing most other technical ceramics.
Zirconia is a very strong technical ceramic with excellent hardness, fracture toughness and corrosion resistance;
The most common are Yttria partially stabilized zirconia (Y-PSZ) and magnesia partially stabilized zirconia (Mg-PSZ). Both of these materials provide excellent performance. Their unique crack propagation resistance and high thermal expansion make them excellent materials for connecting ceramics with steel and other metals. Because of its unique characteristics, zirconia is sometimes called "ceramic steel".
In the field of structural ceramics, zirconia ceramics are widely used in the field of structural ceramics because of their high toughness and high performance. They are made of high strength and high toughness, high density, good wear resistance, high temperature and corrosion resistance, high stiffness, non-magnetic conductivity, electrical insulation, and high-temperature calcination and phase-separation technology at room temperature.
aluminium nitride ceramics
The color of high thermal conductivity aluminum nitride ceramic sheet is gray white, and the surface is smooth. It can be made into any shape or size for easy use and installation.
Aluminum nitride ceramic heat sink has a very high thermal conductivity, which is 7-10 times higher than that of aluminum oxide ceramic, and can reach 180W. Its electrical insulation performance is quite stable, its dielectric constant and dielectric loss are low, and it can withstand the ultra-high temperature of 1800 degrees Celsius without affecting the working performance of the product
With the rapid development of electronic equipment, the demand for electronic or auxiliary products is also increasing, and the application rate of high thermal conductivity aluminum nitride ceramic heat sink as a matrix or packaging material is also increasing in the market.
silicon nitride ceramics
Silicon nitride ceramic is an inorganic material ceramic that does not shrink during sintering. The strength of silicon nitride is very high, especially hot-pressed silicon nitride, which is one of the hardest substances in the world. It has high strength, low density, high temperature resistance and other properties.
High temperature resistance, the strength can be maintained to a high temperature of 1200 without decreasing, and will not melt into a molten body after being heated, and will not decompose until 1900 It has amazing chemical corrosion resistance, and can withstand almost all inorganic acids and less than 30% caustic soda solution, as well as many organic acids; It is also a high-performance electrical insulating material.
Si3N4 can be used to manufacture ball bearings by virtue of its light weight and high rigidity. It has higher accuracy than metal bearings, generates less heat, and can operate in higher temperatures and corrosive media. The steam nozzle made of S ceramic has wear resistance, heat resistance and other characteristics, and it will not be obviously damaged after being used in 650 boiler for several months.
Ultrafine silica powder is made from high-grade silica raw materials through special grinding and precision grading process, with fine particle size and controllable distribution.
Ultrafine silica powder is widely used in industries such as electronic materials, paint and coating, silicone rubber, special ceramics, etc.
The particle size of ultrafine silicon powder is usually D50=1-8 microns, and the particle size distribution is controllable.
99.22%
Water
0.17%
Loss on ignition
0.25%
Fe2O3
0.023%
Moh's hardness
7
ferro silicon nitride powder is applicable to stainless steel smelting, special alloy steel smelting, oriented silicon steel smelting and other casting industries.
As a new type of refractory material, it is applied in the metallurgical field, such as metallurgical furnace body, furnace mouth seal, ironmaking furnace outlet, iron hook amorphous material and nitrogen additive in the steelmaking industry.
Silicon nitride material can be used as abrasive material for abrasive tool manufacturing, and can also be used in chemical fields such as acid resistance, alkali resistance and corrosion resistance.
In terms of steelmaking, granular ferro silicon nitride is mainly used in the production of oriented silicon steel at the initial stage, and it can stably supplement a certain amount of nitrogen for molten steel.
Items
Fe-Si3N4
chemical component(%)
Si3N4
70-80
N
25-31
Si
45-52
Fe
Metallic silicon, also known as crystalline silicon or industrial silicon, is mainly used as an additive for non-ferrous alloys.
Metallic silicon is a product made of quartz and coke smelted in an electric furnace. The content of the main component silicon is about 98%, and the other impurities are iron, aluminum, calcium, etc.
In industry, silicon metal is usually produced by reducing silicon dioxide by carbon in an electric furnace. Chemical reaction equation: the purity of silicon prepared by SiO2+2C Si+2CO is 97 98%, which is called metallic silicon. Then it is melted and recrystallized, and impurities are removed with acid to obtain metallic silicon with purity of 99.7~99.8%.
Metal silicon particles: 1-200mm
silicon metal should be used to produce organic silicon, produce high-purity semiconductor materials and prepare alloys with special purposes.
(1) Production of silicone rubber, silicone resin, silicone oil and other silicone.
(2) Manufacture high-purity semiconductors.
(3) Prepare alloy.
(4) It is an excellent antioxidant in refractory and powder metallurgy industries.
Our company can provide various specifications and models of metal silicon blocks, particles and powders according to customer requirements.
Zirconia ceramics are white, yellow or gray when containing impurities, and generally contain HfO2, which is difficult to separate. There are three crystal states of pure ZrO2 at atmospheric pressure.
The production of zirconia ceramics requires the preparation of high-purity, well dispersed, ultrafine particles and narrow particle size distribution powders.
There are many methods for the preparation of zirconia ultrafine powders. The purification of zirconia mainly includes chlorination and thermal decomposition, alkali metal oxidation decomposition, lime melting, plasma arc, precipitation, colloid, hydrolysis, spray pyrolysis, etc.
