Boron Carbide B4C Sputtering Target 

Boron carbide (B4C) is gray-black and is a very hard man-made material with a Mohs hardness of 9.3 and a microhardness of 5500-6700kg/mm2, 

second only to diamond and cubic boron nitride. The crystal structure of boron carbide is a hexagonal crystal. The density is 2.52g/cm3. 

The melting point is 2450°C, and it decomposes and volatilizes quickly when the temperature is higher than 2800°C. 

Boron carbide is resistant to acid and alkali corrosion and does not wet with most molten metals, and has a fairly high chemical stability. 

As an abrasive material, boron carbide is used for grinding, lapping, drilling and polishing of hard materials such as cemented carbide and gemstones.

In the electronics industry, boron carbide film can be used to make protective coatings. Using the high-temperature thermoelectric properties of boron carbide, 

thermocouple elements and high-temperature semiconductors can be manufactured;

Boron carbide has a high neutron absorption cross section and a broad absorption energy spectrum. 

In nuclear reactor core components, boron carbide is an important neutron absorption material.

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