Silicon carbide (SiC), also known as carborundum, is a semiconductor material that is widely used in various industries due to its exceptional properties such as high thermal conductivity, low thermal expansion, high resistance to chemical erosion, and high mechanical strength.
Silicon carbide comes in different grades, often categorized based on their purity, grain size, and the specific application they’re used for. Here are a few broad categories:
- Technical Grade SiC: This grade contains a high amount of impurities and is used in abrasive applications.
- Pure SiC: This is of higher quality than technical grade and is used in applications that require a higher degree of purity.
- Ultra-High-Purity SiC: This grade is of the highest quality and is used in demanding applications, such as semiconductor manufacturing.
Different forms of silicon carbide include:
- Black Silicon Carbide (C): Black silicon carbide is very hard, sharp, and brittle. Its grain edges are sharp and it is of a certain capacity of heat transmission.
- Green Silicon Carbide (GC): Green silicon carbide is produced basically in the same manner as black silicon carbide in a resistance type electric furnace with petroleum coke, quartz sand, and other materials. It is an extremely hard (Knoop 2600 or Mohs 9.4) manufactured material with high thermal conductivity (100 W/m-K).
Each of these grades and types can come in various grit sizes, from coarse particles to ultra-fine powders, and they can be bonded together in different ways to form composite materials or standalone objects.
Henan Superior Abrasives
HSA mainly provides various Technical Grade SiC, HSA’s portfolio includes a variety of Silicon Carbide products, such as Black Silicon Carbide, available as Macro Grits and Micro Powder, and Green Silicon Carbide, also available as Macro Grits and Micro Powder. In addition, they offer other abrasive materials, such as White Fused Alumina, Brown Fused Alumina, and Boron Carbide. These products find extensive applications in abrasives, refractory materials, functional ceramics, and metallurgical raw materials.