GC & C PDF Print E-mail


GC, green silicon carbide, is a very high purity SiC lapping powder. The hexagonal α-type crystal is just below diamond in terms of hardness, and its chemical stability is excellent at room temperature. The result is a product with superior lapping and polishing capabilities, which is not affected by chemicals, and can spontaneously generate sharp grinding edges through fragmentation.

GC is well suited for use as a lapping powder in a wide range of functions, including the precision lapping and dicing of crystal and ferrite, the slicing of Si ingots, and the processing of materials ranging from ultra- hard metals and edged tools to soft metals such as brass and other copper alloys. Additionally, GC is used in the processing of various resins. GC is also ideal for use in super-finishing precision grindstones. As it possesses the electricalproperties of a semiconductor, GC has good heat conductivity and has the ability to withstand high temperatures, making it useful as a material in fine ceramics.


C is a black silicon carbide lapping powder, commonly known as carborundum. Like GC, this product is obtained by fusing silica and coke in an electric furnace at a temperature of more than 2000℃, resulting in a product with an α-type silicon carbide crystal configuration. Although in comparison with GC, C is slightly lower in purity and hardness, it does have excellent toughness. C is manufactured using Fujimi's own unique production methods. Becauseof its stable cutting edges and its ideal particle size distribution, it is used for abrasive machining. The unique abrasive character of C makes it possible for superior lapping to be done on a work surface. C is ideal for use as a material for precision lapping polishing cloths and papers, and finishing precision grindstones. In addition, it can also be used for precision lapping of cast iron, brass, copper, aluminum, stone, and glass for photomasks. It is also well suited for the precision honing and dicing process necessary for such products as semiconductor crystals.

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