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STA high purity 99.99% Boron nitride ceramic parts
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Product Details
Place of Origin: | Henan, China | Type: | Ceramic Parts | Application: | Industrial Ceramic |
Model Number: | STA-BN10 | Brand Name: | STA |
Product Description
Specifications
Boron nitride ceramicfessional manufacturer
2.CE quality
3.high flexural strengt
4.as customized
STA high purity 99.99% Boron nitride ceramic parts
Boron Nitride ceramic are made by hot pressing hexagonal Boron Nitride powders. The color of BN products is milky, true density is 2.27g/cm , Mohs value is 2, they have a high melting point(sublimate point is 3000°C). When in a condition of inert atmosphere, their maximum service temperature can reach to 2800°C. Their thermal conductivity is 25W/(m·K), similar to stainless steel.And coefficient of liner And coefficient of liner expansion is between 2.0×10 /°C to 6.5×10 /°C.
the features of the Boron nitride ceramic parts
They have a high quality of heat-resistance and shock-resistance, and they can work efficiently after several hundred of 1000°C←→20°C cycles. Their oxidation resistance is poor, and their chemical properties are stable, they have a high corrosion-resistance of acid, alk, molten metal and glass. BN products cannot have chemical reaction with most molten metals, such as Cu, stainless steel, Fe, Sn, Zn and Sb. Mechanical strength is low, just a little more than that of graphite, volume resistance is between 25~1050°C,10-6~10-6n·cm, they are good insulators. Electric breakdown strength is between 30 kV/cm to 40 kV/cm, which is three times than that of aluminum oxide. Thermo compression products are distinctly anisotropic, they can be used to finish cut, and the precision of lathe can reach to 0.01mm.
The technical paramaters
Grade | BN99 | CABN | ALBN | ZSBN | ZABN | SBN |
Compositions | BN>98.5% | BN>97.5% | AlN+BN | ZrO2+BN | ZrO2+AlN+BN | SiC+BN |
Binder | B2O3 | CaB2O3 | AlBO3 | B2O3 | AlBO3 | AlBO3 |
Density(g/cm3) | 1.95~2.0 | 2.0~2.1 | 2.6 | 2.9~3.0 | 3.2~3.3 | 2.4~2.6 |
25°C Volume Resistivity(Ω·cm) | >1014 | >1013 | >1014 | >1012 | >1012 | >1012 |
Max. Service Temp. (°C) Oxygen Inert Gas High Vacuum |
900 2400 2200 |
900 2400 2200 |
900 2100 1900 |
1000 1800 1800 |
900 1800 1800 |
900 1700 1700 |
Three-point Flexural Strength(Mpa) | 30 | 70 | 130 | 120 | 130 | 91 |
Compressive Strength(Mpa) | 100 | 100 | 250 | 280 | 300 | 300 |
Coefficient of Thermal Expansion 25~1000°C(10-6/K) | 1.5 | 2.0 | 4.5 | 5.0 | 5.0 | 4.0 |
Thermal Conductivity(W/mK) | 15 | 20 | 50 | 20 | 40 |
Typical Boron Nitride Applications:
1.Electronic Parts - heat sinks, substrates, coil forms, prototypes
2.Boron doping wafers in silicon semiconductor processing
3.Vacuum melting crucibles
4.CVD crucibles
5.Microcircuit packaging
6.Sputtering targets
7.High precision sealing, brazing, and metallizing fixtures
8.Microwave tubes
9.Horizonatal caster break rings
10.Low friction seals
11.Plasma arc insulators
12.High temperature furnace fixtures and supports
products showing :
Contact Us
- STA Refractory (Zhengzhou) Co., Ltd.
- Contact nameAlice Wang
- Phone86-371-55180399
- AddressJinshui Zone Zhengzhou,Henan
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