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carbon/carbon composite material integrated carbon material of high temperature properties and composite materials with excellent mechanical properties, with high specific strength and high specific stiffness, excellent ablation resistance and friction performance, good thermal shock resistance, low creep, high temperature strength retention rate high and good biocompatibility and so on a series of excellent properties, it can be as functional materials, and can be used as high temperature structural materials, is currently the only composite material for high temperature of 2800. So far, the carbon carbon composites have been successfully application in missile reentry nose cone, solid rocket motor nozzle, aerospace aircraft structure parts, brake disc, a heat exchanger, high power electronic device radiator and artificial bones, joints, teeth many fields,…
Carbon carbon composite material has a series of advantages under the high thermal condition,and it’s widely used in the aerospace field,however,the material will be oxidized rapidly in the aerobic conditions when the tempterature above 400 centigrade,and it will limit the using as the structure parts,protection material etc. And the coating technology is the good method to solve this problem. SiC,ZrC material,as they have high melting point and good stable property under high tempterature, so they become the ideal material of protecting coating of carbon carbon composite material. It can use the low pressure chemical vapor deposition(LPCVD) method to make the SiC coating and ZrC coating on the surface of carbon fiber and the inside C/C composite material. The different methods…
Graphite cut gasket is from pure graphite plate punching or cutting into the, it has good corrosion resistance, resistant high / low temperature, good compression elasticity and high strength, a variety of circular complex geometric gasket is widely used in pipes, valves, pumps, pressure vessels, heat exchanger, condenser and generator, air compressor, exhaust pipe, a refrigerating machine. raw material . expandable graphite (flexible graphite) produced by chemical treatment and 1000 DEG C high temperature treatment of pure natural graphite, this material provides excellent heat resistance and chemical resistance, good pad with high elasticity and low ductility characteristics. Second, characteristics: 1, in the extremely low temperature to 400 DEG C temperature range of sealing performance remained almost unchanged 2, almost of…
