Black silicon carbide is produced in an electric-resistance type furnace through fusing quarts sand and petroleum coke and high quality silica with high temperature. Its hardness is between fused alumina and diamond's.
higher mechanical intensity than fused alumina's.
It is brittle and sharp and has electrical and heat conductivity in some degree. Black silicon carbide, metallic, sic≥95%, stronger than green silicon carbide but softer than green silicon carbide, is mainly used for grinding of cast iron and non-metallic materials.
Advantage
Raw materials are of high quality: pure silicon carbide, guaranteeing the products’ good quality.
Sharp knife-edge, having cutting function.
Centralized and uniform particle size distribution
Electrical conductivity
Heat conductivity
Chemical stability
High thermal conductivity
Low expansion coefficient
Good abrasion-resistance
Parameter
The shape: polygon
Color: black
Proportion:3:2
Bulk density:1.45-1.56 g/m³
Mircohardness:2840-3320g/mm2
Mosh hardness: 9.15
Package: 25\kg
Composition%:SiO≥92.5%,Free C≤0.3%,Fe2O3≤1.2%
Usage
Black silicon carbide, sic≥98.5%,its toughness is better than green silicon carbide.
Mostly for processing low tensile strength of the materials, such as glass, ceramics, stone, refractory materials, cast iron and non-ferrous metals.
