boron carbide b4c for castable

Description

Boron carbide, alias black diamond, formula B4C, usually black powder. It is one of the hardest three materials known. (the other two are diamonds, cubic boron nitride), used for armor, bullet proof clothing and many industrial applications of tank cars. Its Mohs hardness is 9.3.

Boron carbide is used as an antioxidant additive for low-carbon magnesia-carbon bricks and castables. It is used in the key parts of high temperature resistance and erosion resistance in the iron and steel industry.

A boron carbide-graphite thermocouple consists of a graphite tube, a boron carbide rod, and a boron nitride bushing between them. In inert gas and vacuum, the service temperature is as high as 2200°C. Between 600 and 2200°C, the potential difference has a good linear relationship with temperature.

At present, the use performance of low-carbon magnesia-carbon bricks is generally improved by improving the bonded carbon structure, optimizing the matrix structure of magnesia-carbon bricks, and adding high-efficiency antioxidants. Among them, graphitized carbon black composed of industrial grade B4C and partly graphitized carbon black is used. Composite powder, which is used as carbon source and antioxidant for low-carbon magnesia-carbon bricks, has achieved good results. The low-carbon magnesia-carbon bricks added with B4C have good conventional physical properties, oxidation resistance and thermal shock stability.

Application

-Anti chemical pottery;
-wear-resistant tools;
-Used in double-face grinding of LED and thinning and polishing of sapphire based LED extending plates,national defense industry,nuclear industry refractories industry and other engineering ceramic materials, welding materials etc.

Specification