초록 ▼

A tungsten carbide ceramic material which cuts titanium alloys four to five times faster than cemented carbide, ceramic-coated cemented carbides, or state-of-the-art ceramic cutting tools can be densified with or without applied pressure at temperatures below 1700°C. Grain growth inhibitors or sinte

A tungsten carbide ceramic material which cuts titanium alloys four to five times faster than cemented carbide, ceramic-coated cemented carbides, or state-of-the-art ceramic cutting tools can be densified with or without applied pressure at temperatures below 1700°C. Grain growth inhibitors or sintering aids can be added to control grain size in the final product. The polycrystalline tungsten carbode ceramic can be formed into wear components having improved performance in comparison to cemented tungsten carbides in a variety of drilling, cutting, milling, and other wear applications.

대표청구항

A ceramic cutting tool comprising polycrystalline tungsten carbide of at least 98.5% by volume tungsten carbide with a density of at least 95% of its theoretical density, said tungsten carbide having an average grain size of about 1 to about 10 micrometers.

A ceramic cutting tool comprising polycrystalline tungsten carbide of at least 98.5% by volume tungsten carbide with a density of at least 95% of its theoretical density, said tungsten carbide having an average grain size of about 1 to about 10 micrometers.