What Is The Application Knowledge Points Of Silicon Carbide Whiskers

What is the application knowledge points of silicon carbide whiskers

July 24,2020.

Silicon carbide whiskers are cubic whiskers and belong to the same crystal type as diamond. It is the whisker product with the highest hardness, the highest modulus, the highest tensile strength, and the highest heat-resistant temperature among the whiskers that have been synthesized. There are two forms of α type and β type, among which β type has better performance than α type. Type β has higher hardness (more than 9.5 on Mohs hardness) than type α, better toughness and electrical conductivity, abrasion resistance, high temperature resistance, especially earthquake resistance, corrosion resistance, and radiation resistance. It has been used in aircraft and missile shells. It has been applied to engines, high-temperature turbine rotors, and special parts.

Silicon carbide is an extremely anisotropically grown crystal. It is a short fiber crystal that grows along the surface through a catalyst on the basis of silicon carbide particles. The current production methods mainly include gas phase reaction method and solid material method. The solid material method is more It is economical and more suitable for industrial production. Japan and the United States have shown great enthusiasm for the synthesis of silicon carbide, and have carried out a lot of research work in reducing costs and improving quality. American Ramsey et al. used amorphous silicon oxide from rice husks as the silicon source (obtained by burning carbonized rice husks), mixed them with crushed carbonized rice husks and powdered petroleum coke, and sintered them to produce silicon carbide products. Japan's Tanaka and others produced high-purity silicon carbide products through the steps of acid cooking of rice husks, impurity removal, carbonization, and sintering. In addition, Japan's Mitsui Toya, Tokai Graphite, Kobe Steel and other units have also carried out related research and development work.

SAT NANO is the earliest manufacturer of silicon carbide whiskers in China. The silicon carbide whiskers produced are a high-strength whisker-like (one-dimensional) single crystal with high strength, high modulus and many other excellent mechanical properties. It is widely used in metal substrates. , Ceramic matrix composite materials. Mainly used for ceramic cutting tools, high temperature components in the aerospace field, main bearing housings, large mud pumps, etc. Parts made by adding this new material have better high temperature resistance and wear resistance, and are widely used as structural materials Aviation, aerospace, automotive, machinery, petrochemical and other industrial fields are known as the king of whiskers. Especially in the automotive and aerospace industries, engines, housings, etc. are of special significance.

In addition, as a reinforcing component, it is added to the plastic matrix, metal matrix or ceramic matrix to enhance and toughen. It uses the high thermal conductivity and high insulation of nano Sic materials to be used as a substrate and a large-scale integrated circuit in the electronics industry. Packaging materials. As an information optical material, it has high application value in the fields of TV display, modern communication, network and so on. Such whiskers are used in the manufacture of high-strength plastics, metals and ceramics, which can accelerate the upgrading of key traditional products. Due to the excellent functions of nano-silicon carbide whiskers, it has a special role in the aerospace industry, that is, the application on the shells of aircraft and missiles, as well as the application of engines, high-temperature turbine rotors, and special parts. Therefore, it is used in the military industry and The demand in the civil industry is huge.

The β-type micron silicon carbide whiskers produced by SAT NANO have the characteristics of high purity and good morphology. They are the first choice for strengthening and toughening various metal-based, ceramic-based and resin-based composite materials. Its strengthening and toughening effect and scope of application are unmatched by other materials.

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