Silicon Nitride Ceramics Cylinder

Si3N4 Ceramic Substrate Manufacturer,Silicon Nitride Ceramic For IGBT,Power Module Substrates,LED Substrate Product Description Silicon Nitrides (Si3N4) Feature An Excellent Combination Of Material Properties. They Are Nearly As Light As Silicon Carbide (SiC), But Their Microstructure Gives Them Excellent Thermal Shock Resistance And Their High Fracture Toughness Makes Them Resistant To Impacts And Shocks. Properties Of Silicon Nitride (Si3N4) Very Low Density (3.21 G/Cm3) Very High Fracture Toughness (7 MPam1/2) Good Flexural Strength (850 MPa) Very Good Thermal Shock Resistance: High Thermal Stress Parameters (569 K) Maximum Operating Temperature In An Oxidizing Atmosphere: 1,300°C Maximum Operating Temperature In A Neutral Atmosphere: 1,600°C Feature High Strength (High Reliability) Similar To The Thermal Expansion Coefficient Of Semiconductors Such As Si, SiC, And GaN High Dielectric Strength High Bending Strength Main Use Of Precision Ceramics For Electronics (Si3N4=Silicon Nitride) Power Module Substrates LED Substrates Submount For Optical Pick-Up Heat Dissipation Substrates The porous silicon nitride ceramic material combines the excellent properties of both the silicon nitride ceramic and the porous ceramic and is a ceramic material having a communicating or closed pore in the body. Porous silicon nitride ceramics have been widely used in aerospace and environmental chemicals due to their special structure and properties, such as low density, high porosity, moderate dielectric properties, high specific surface area, high hardness, and high fracture toughness. Important fields such as biomedicine, national defense, and military.

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.

The long-term practical use proves that SG-28 Silicon Nitride Ceramic is very suitable for low-pressure casting machines and dosing furnaces. Compared with traditional cast iron, silicon carbide, carbon nitrogen materials and Aluminum Titanate, Silicon Nitride Ceramics have the best high-temperature strength and the service life can last for more than one year. The low wettability to aluminum liquid, makes the SG-28 Silicon Nitride Ceramic effectively reduce the slagging on the inner and outer walls of the riser tube, reduce the shutdown loss and maintenance. SG-28 Silicon Nitride Ceramic has excellent corrosion resistance, which can effectively reduce the pollution to the aluminum liquid, and improves casting quality.

Rated Voltage 110V-380V 50/60Hz Rated Power 500W-3000W Insulation electric strength 2,500V, 50Hz at room temperature, no punch-through in one minute Leakage current 0.025mA under normal operating condition, 10 mA in water after broken Acid corrosion resistance Boil for 6h in 5% sulfuric acid solution, corrosion rate 10g/m2.h Alkali corrosion resistance Boil for 6h in 30% NaOH solution, corrosion rate 0.6g/m2.h Life 5000h Technical Data Breaking Strength at Room Temperature 900Mpa Fracture Toughness at Room Temperature 6.0-8.0 Mpa.m1/2 Volume Density 3.20-3.4g/cm3 Volume Resistivity at Room Temperature 1014�©.cm Relative Dielectric Constant at Room Temperature 6-7 Heat Conductivity 23-25W/ m-k Thermal Expansion Coefficient 3.1�?10-6/ Hardness HRA92-94 Mechanical Property Hardness HRA Fracture Toughness Mpa.m1/2 Bending Strength Mpa 92.0~94.0 6.0~8.0 900 The product is liquid heating silicon nitride ceramic heating element, applicable media: liquid, water, heater within 3,000W, boiler within 2,500W, steamer within 1,800W. Match J ?, K ?, L ?, R ? and U ? packaging. Executive Standard: JB/T10320-2002 Household and Similar Silicon Nitride Heating Elements Liquid Heating Silicon Nitride Ceramic Heating Element The product uses high-performance silicon nitride ceramics as the matrix, has strong high temperature mechanical strength, heat shock resistance, acid and alkali corrosion resistance, and excellent insulating property and conducting property, besides, unique formula and hot pressing manufacturing technology of the company make the product have the following performances and characteristics: Good electrical security, leakage current less than 10mA after breaking Thermostability, dry point reaching 1,300 High hydraulic loading rate, hydraulic loading rate of heating liquid reaches 78w/cm2 maximally Small volume, high power Little thermal inertia, rapid temperature rise Long service life Application Range of Acid and Alkali Corrosion Resisting Liquid Heating Type Silicon Nitride Ceramic Heating Element Rapid Heating and Water Storage Electric Heater Constant Temperature Bathtub Heater Sauna Steam Generator Rapid Heating Liquid Heater Directly-heated Electric Heating Faucet and Liquid Heater Energy-saving Rapid Heating Electrical Heater Electric Heater Widely used for instant, directly-heated and water storage, and energy-saving instant heating electric heaters, instant liquid heaters, electric heaters, cold and hot drink dispensers, air-conditioning heaters, air energy heaters, instant faucets, thermostats, steam generators, and other industries of household, industrial and commercial electric heaters.

Si3N4: 1, corrosion-resistant strong acid, alkali, seawater can also be used. 2, high temperature, ultra-wear-resistant, silicon nitride ceramic ball at 8000C, the strength, hardness almost unchanged. 3, non-magnetic, insulation, magnetic field can also be used, non-conductive. 4, light weight, lighter than the average material bearing 1/4, the density of 3.20g / cm3. 5, high rigidity, high strength, the hardness of the bearing than the double, elastic modulus of about 1/3. 6, high-speed rotation, rotating body (ball) light weight, small centrifugal rotation. 7, silicon nitride ceramic ball linear expansion coefficient of 3.2 Ã? 10-6 / K, almost 1/4 of bearing steel. 8, silicon nitride ceramic ball bearing self-lubricating can solve the lubrication caused by pollution and add inconvenience. 9, drug resistance, mechanical strength, damage toughness, low thermal conductivity. Application areas: composite bearings, mechanical seals, chemical pumps, nozzles, auto parts, heat exchanger parts, vacuum equipment and other harsh environments. PRODUCT SILICON NITRIDE BALLS(Si3N4) DIAMETER Φ0.5mmâ??Φ80.0mm GRADE G5-G25 PERFORMANCE 1,59% lighter than the ball, which means less centrifugal force and wear less groove at high speed and acceleration. 2, 44% of the modulus of elasticity, which means less load deformation. 3, Rockwell hardness 92 4, the smaller the coefficient of friction 5, only 1/4 of the thermal expansion coefficient of steel, you can tolerate high temperatures. 6, can achieve excellent surface finish, Ra can be 4 to 6. 7, can withstand high temperature and high hardness and strength up to 1050 ° C 8, never rust, can be no lubricant. The 9, more resistant to corrosion than steel. APPLICATION Silicon nitride ceramic ball can be used for a variety of bearing performance requirements: high-speed / ultra-high-speed bearings, high precision bearings, vacuum bearings, high / low temperature bearings, non-magnetic bearings, high precision ball screw; , High temperature pump, metering pump used as a ball, measuring the ball. Silicon nitride ceramic ball is generally assembled into a hybrid bearing, can be used in high-tech industries such as aviation, defense and other industries, can also be widely used in chemical, metallurgical, medical, food, oil, electronics and other industries.

As manufacturer and supplier of industrial ceramics , Chemshun Ceramics supply silicon carbide ceramic plate as bulletproof body vest protective materials . more ballistic armor ceramic shapes includes Square, rectangle, triangles , hexagonal etc. Customized shapes acceptable.

Specified for use in high-technology industries such as aerospaace and defense. Excellent corrosion resistance withstands attack from harsh chemicals and demanding environmental conditions. Light weight Silicon Nitride weighs 60% less than steel which reduces centrifugal force, skidding and wear under high speed and acceleration. High Temprature Hardness is twice that of Steel.

Boron Nitride Ceramics Boron nitride ceramics are made by hot pressing boron nitride powders at high temperature and pressure�¯�¼? they can easily be machined into rods, bars, plates and even intricate custom shapes. The excellent highly exceptional thermal, physical and chemical characteristics of boron nitride ceramics make it ideal for solving tough challenges in a wide range of industrial applications.�?�  Excellent thermostable performance (Temperature �¢?�¥ 2000�¢?? in vacuum and inert atmosphere) Excellent thermal shock resistance Excellent lubricating properties High thermal conductivity High electrical resistivity Good chemical inertness Non-wetting (without oxidation) Excellent machinability It is widely used in many fields The ceramics are hard and can be made into high-speed cutting tools and drill bits used in geological exploration and oil drilling. Different shapes, can be used for high temperature, high voltage, insulation and heat dissipation components. Ceramics can be used to make packaging materials to prevent neutron radiation. Ceramics can be used to make special electrolysis and resistance materials under high temperature conditions. We can make different shapes of ceramics according to your requirements and your drawing, welcome and looking forward for your inquiring!

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.