Sintered ceramic body for cutting tools

Details Sintered ceramic body for cutting tools Sintered ceramic body for cutting tools

1979-05-10

1980-05-27

McCarthy, Helen M.

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

51307, 51309, 106 65, 106 734, B24D 304, C04B 3116, C04B 3544, C04B 3556

Patent

active

042048737

ABSTRACT:
A sintered ceramic body for use in cutting tools which has an average crystal grain size of not more than about 2.mu. and comprises about 60 to 95% by volume of (a) Al.sub.2 O.sub.3 and the remainder being composed of (b) WC, provided that it may contain W.sub.2 C in which case the intensity ratio I.sub.W.sbsb.2.sub.C (101)/I.sub.WC (111) in X-ray diffraction using CuK.alpha. rays is not more than about 0.5, and (c) TiN, the volume ratio of components (b) to (c) being about 5:95 to 95:5.

REFERENCES:
patent: 2939796 (1960-06-01), Wolff et al.
patent: 4046517 (1977-09-01), Soga

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