Scarce cubic silicon carbide materials from around the world attract customers from the United States and South Korea
Release time:
2020-01-07
Source:
Silicon carbide (SiC) and gallium nitride (GaN) have also become widely known as key materials, but what most people don't know is that the most common and widely used in refractory, superhard abrasives, advanced ceramics and other industries is actually the alpha phase. Silicon carbide, which is a far cry from the low temperature stable β-phase silicon carbide that is really used in semiconductors.
β-SiC belongs to the cubic system (diamond crystal), which is cubic silicon carbide. In addition to its use in the third-generation semiconductor industry to prepare silicon carbide wafers, it has high chemical stability, high hardness, high thermal conductivity, low thermal expansion coefficient, wide energy band gap, high electron drift speed, and high electron migration. Rate, special resistance temperature characteristics, etc., are also widely used in precision machining technology, military industry, aerospace, advanced refractory materials, special ceramic materials, advanced grinding materials and and reinforcement materials, so it is also compared with α-SiC. The application scope and application capacity are much larger. For example, in the application of polishing and grinding, the sharp edges of β-SiC can improve the polishing efficiency; in the field of high-end special ceramics, adding β-SiC can improve the sintering activity of ceramics.
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