Silicon carbide counterattacks superhard materials grinding or throwing or challenging
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There are three main types of β-Sic production methods: laser method, plasma method and solid phase synthesis method. The first two processes mainly synthesize nano- and sub-micron powders, and due to the short synthesis time, the true density of the particles cannot be achieved, and the purity of the particles is relatively low; the solid phase synthesis method currently has many processes, but all have certain technologies. Difficulty, as far as the current international industry survey is concerned, the global scope of truly high crystallization, high purity and batchization is only achieved by a company in Shaanxi Xikeboer, and has entered the market for many years. Most other manufacturers stay in the theoretical or experimental stage. Most of the products have many disadvantages such as low β phase content, high product impurities, and difficulty in mass production. 
Basic properties of β-SiC The β-SiC micropowder has high chemical stability, high hardness, high thermal conductivity, low thermal expansion coefficient, wide band gap, high electron drift velocity, high electron mobility, and special resistance temperature characteristics. Etc., therefore, it has excellent properties such as anti-wear, high temperature resistance, thermal shock resistance, corrosion resistance, radiation resistance, and good semi-conductivity. It is widely used in electronics, information, precision processing technology, military, aerospace, advanced refractory materials, Special ceramic materials, advanced grinding materials and reinforcement materials. Its application scope is mainly divided into the following categories:
Because β-Sic has a diamond structure, the particles are spherical, with super wear resistance, corrosion resistance, super thermal conductivity, low expansion coefficient, etc., making it a good application in special coatings. When the β-Sic ultrafine powder is plated on common materials, the wear life will be greatly improved. For example, ordinary carbon steel drills drill 10mm steel plate, and 1-2 holes will be damaged, and the drill bit coated with β-Sic will be used. The performance can exceed the alloy drill bit and can drill 20~50 holes. The aluminum alloy piston reciprocates in a large amount in the cylinder and is easily worn. The coating of the β-Sic material can increase the life of the piston by 30-50 times.
As a precision abrasive polishing material, β-Sic is much more efficient than white corundum and α-Sic, and it can greatly improve the product finish. At present, there are many grinding and polishing materials on the market, and the price is dozens or even hundreds of times that of β-Sic; but the grinding effect of β-Sic in many fields is no less than diamond, even grinding stainless steel, silicon wafer, The finish of the glass is better than that of diamond, but the price is a few times that of diamond.
The oil stone and grinding disc made of white corundum are widely used in the stainless steel grinding industry. The polishing performance is relatively high and the product has a short service life. The abrasive material made of β-Sic (oil stone, grinding disc, etc.) has high finish. The advantages of strong grinding force and long life. For example, the oilstone polished bearing made of white corundum can be improved by 2-3 grades after the replacement of the oil stone made of β-Sic, the life of the product is increased by 5-8 times, and the number of oilstone replacement can be greatly reduced, thereby reducing the labor intensity. Increase productivity. The abrasive paste, polishing liquid, high-precision abrasive cloth belt and super-abrasive coating made by β-Sic also have good application prospects.