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Application of reaction sintered silicon carbide ceramics
- Categories:Industry Trends
- Author:Administrator
- From:Ningbo Linhe Technology Co,Ltd
- Date:2021-11-20 17:31:03
- Views:
brief introduction Reaction sintered silicon carbide ceramics are also called self bonded silicon carbide ceramics. Typical products include commercialized materials refer and KT and silicon impregnated sintered silicon carbide. Its plasti...
Application of reaction sintered silicon carbide ceramics
brief introduction Reaction sintered silicon carbide ceramics are also called self bonded silicon carbide ceramics. Typical products include commercialized materials refer and KT and silicon impregnated sintered silicon carbide. Its plasti...
- Categories:Industry Trends
- Author:Administrator
- From:Ningbo Linhe Technology Co,Ltd
- Date:2021-11-20 17:31:03
- Views:
Reaction sintered silicon carbide ceramics are also called self bonded silicon carbide ceramics. Typical products include commercialized materials refer and KT and silicon impregnated sintered silicon carbide. Its plastic blank is generally made of silicon carbide powder (~ 5%) μ m) It is made by mixing, carbon or graphite and plastic agent. It is also made by mixing silicon carbide powder with plastic sintering agent. The blank is made into plain blank by pressing, extrusion, grouting or other forming methods.
nature
The plasticizer is burned or pyrolyzed into porous carbon, and liquid or gaseous silicon reacts with amorphous carbon or graphite to form SiC. The SiC polycrystal formed by the reaction is integrated with SiC powder, and the micropores are filled with excess silicon [~ 10% (vol)] to obtain products without pores. The bending strength at 25 degrees can reach 400-600mpa, the melting point (1410 degrees) strength is 250Mpa, and the elastic modulus is about 115mpa [1].
purpose
It can be used as coating material for nuclear fuel, sealing parts of various machinery, high-temperature gas turbine components (mainly combustion chamber), etc. In 1975, W.B. hilling et al. Developed SiC / Si multiphase ceramics. Silicon carbide polycrystals are obtained by reacting carbon fibers (in the form of cloth felt or chopped fibers) with molten silicon. The advantage of this method is that the finished product still maintains the initial orientation of carbon fiber, and the mechanical properties are similar to those obtained by other processes.
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