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Graphite is a super material of chemical industry, the chemical stability of the very prominent, acid and alkali resistance, corrosion resistance, in the chemical industry has a special position. Natural graphite with bulk graphite and flake graphite is the best, the most widely used. I haven't found massive blocky Graphite Deposit, flake graphite and aphanitic graphite has a large deposit, and formed a large-scale mining base. Natural graphite has many excellent properties, so it is widely used in various sectors of the national economy, especially in the metallurgical, mechanical, electrical, chemical industry has been widely used. Graphite has outstanding resistance to high temperature and low temperature resistance properties, a small expansion coefficient, volume stability, so it can anti quench heat…
The main factors of the influence of the carbon carbon composite material include the type of carbon fiber, volume fraction and the type to reinforce,the type and structure of the matrix carbon,material density and the heating temperature(graphitization) etc.the mechanical property of the carbon carbon composite material will increase with the increasing of the density,but the heating will reduce the strength of the C/C composite material. As to the densification process of embryo body is different,so the mechanical property of carbon composite material is usually different,different scolars will get different results.In general, we think that CVI carbon and the carbon fiber can form a good combination,so the CVI can make the carbon carbon composite with a better mechanical property than the…
The physical properties of carbon/carbon composite material are mainly included:density, degree of graphitization,hardness, thermal conductivity, electric conductivity, specific heat, coefficient of thermal expansion etc.Among these properties,the density,thermal conductivity and the graphitization are very important to the carbon carbon composite material which is used for aviation brake. The density can be the direct response of the C/C material,and it’s the basis of other properties,and the density depends on the density of the carbon fiber and the matrix carbon and the porosity. The degree of the graphitization is another important parameter of the C/C composite material,it has a close contact with the strength and friction property.now,there is no uniform method to test the graphitization degree,the ways to test it are mainly included…
