Cubic SiC and its performance
The hardness of β-SiC is between super hard abrasive and ordinary abrasive
Release time:
2018-02-04
Source:
The hardness of β-SiC is between the superhard abrasive and ordinary abrasive. The crystal's equiaxed structure and unique synthesis method make it have better natural sphericity than α-SiC, B4C, BN, AlN, diamond and other materials, and has very good physical density, natural bulk density, and better than High-temperature thermal stability of super-abrasives (> 1600 ° C, and diamonds begin to oxidize at about 800 ° C and burn at about 900 ° C; CBN begins to soften at 1370 ° C), chemical stability, and hardness far superior to ordinary abrasives Strength and toughness, with better grinding and polishing effects in precision grinding and polishing, is an excellent material for manufacturing fine consolidated abrasives and fine coated abrasives. Especially suitable for dry grinding and polishing.
Β-SiC micro-nano-level ultrafine particles have better sintering activity than α-SiC, B4C, BN, AlN and other powders, and are ideal raw materials for manufacturing various structural materials with excellent mechanical properties.
Β-SiC has wide band gap and high electron drift speed characteristics, and is easy to be purified and ultra-refined. It has more unique application prospects in semiconductor materials, absorbing materials and other fields.
β-SiC micropowder and whiskers are excellent in high temperature resistance, corrosion resistance, high hardness, high strength, high thermal conductivity, chemical and thermal stability, low expansion, and half the specific gravity of most metal alloys. Materials can greatly improve the mechanical properties, thermal properties, abrasion resistance, corrosion resistance and other properties of polymer materials, various coating materials, military materials, aerospace materials, etc., so they have become more and more widely used in these fields. .
The β-SiC fine powder produced by the company has high purity (up to 99.99%), regular crystal structure, large bulk density, narrow particle size distribution, and high sintering activity; β-SiC whiskers have a large aspect ratio, high surface finish, and straight grain rate The high content and small particle content in the whiskers make it popular in the above applications.
The company has pioneered the mass production of nano-sized silicon carbide in China. Nano silicon carbide has a purity of more than 98% and a fineness of 20 nm to 100 nm. The company's products are opening up new application areas and new design possibilities not possible with traditional metal and ceramic materials.
possibilities,abrasive
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