Hot pressing sintering, pressureless sintering, hot isostatic pressing sintering of the material, the high temperature strength can be maintained to 1600 ℃, it is the best ceramic material for high temperature strength. Antioxidant properties are also the best of all non-oxide ceramics.
Silicon carbide is formed in two ways, reaction bonding and sintering. Each forming method greatly affects the end microstructure.
Reaction bonded SIC is made by infiltrating compacts made of mixtures of SiC and carbon with liquid silicon. The silicon reacts with the carbon forming more SiC which bonds the initial SiC particles.
Sintered SiC is produced from pure SiC powder with non-oxide sintering aids. Conventional ceramic forming processes are used and the material is sintered in an inert atmosphere at temperatures up to 2000ºC or higher.
Both forms of silicon carbide (SiC) are highly wear resistant with good mechanical properties, including high temperature strength and thermal shock resistance. Our engineers are always available to best advise you on the strengths and weaknesses of each ceramic for your particular needs.
Silicon Carbide Ceramics Basic Properties:
High thermal conductivity (close to aluminium)
Good thermal shock resistance
Liquid and gas proof
High refractoriness(can be used at 1450℃ in air and 1800℃ in neutral atmosphere)
It is not affacted by corrosion and do not wet with melted aluminium or melted zinc
Low friction coefficient
Resists to basic and strong acids
High mechanical strength
Silicon Carbide Ceramics Application:
pads Pump components
Mirors Ballistic protection