C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
117/240
C04B 35/00 (2006.01) B23B 27/14 (2006.01) C04B 35/597 (2006.01) C04B 41/50 (2006.01) C04B 41/87 (2006.01)
Patent
CA 1204637
24487 CN COATED COMPOSITE MODIFIED SILICON ALUMINUM OXYNXTRIDE CUTTING TOOLS Abstract: Coated abrasion resistant composite ceramic cutting tools comprise a composite substrate body consisting essentially of a particulate material selected from the group consisting of the refractory metal carbides, nitrides, carbonitrides and combinations thereof uniformly distributed in a matrix, coated with at least one adherent coating layer of a refractory material. The particulate material is of an average particle size ranging between about 0.5 microns to about 20 microns and comprises from about 5 to about 60 volume percent of the composite cutting tool The matrix consists essentially of a modified silicon aluminum oxynitride having about 2 to about 25 volume percent of a modifier selected from the oxides of silicon, yttrium, magnesium, hafnium, zirconium, beryllium, the lanthanides and combinations thereof.
426939
Buljan Sergej-Tomislav
Sarin Vinod K.
Gte Laboratories Incorporated
R. William Wray & Associates
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