Stock material or miscellaneous articles – Self-sustaining carbon mass or layer with impregnant or...
Patent
1994-10-05
1996-10-22
Turner, Archene
Stock material or miscellaneous articles
Self-sustaining carbon mass or layer with impregnant or...
51307, 51309, 428141, 428148, 428457, B24D 300
Patent
active
055675220
ABSTRACT:
A diamond cutting tool has a rake face (5) of a cutting edge member (2) consisting essentially of a (111) plane of diamond. The cutting edge member (2) of diamond is vapor-deposited by CVD or the like on an independently prepared base material. In this vapor deposition, the diamond is deposited while controlling and periodically varying the carbon to hydrogen ratio of the supplied raw material gas, in such a manner that a (111) crystal plane is oriented with a prescribed fluctuation or non-uniformity, but is substantially parallel to the base material surface. The as-formed diamond material is separated from the base material and cut into a desired shape, and then bonded as a cutting edge member (2) to a tool base (1) through a metallization layer (4) and a brazing layer (3), in such an orientation that the (111) plane defines the rake face (5). The tool having such a rake face (5) consisting essentially of the (111) plane, with a prescribed fluctuation of its orientation, is excellent in wear resistance and is resistant to cleavage damage.
REFERENCES:
patent: 5178645 (1993-01-01), Nakamura et al.
Fujimori Naoji
Ikegaya Akihiko
Takahashi Toshiya
Tanabe Keiichiro
Fasse W. F.
Fasse W. G.
Sumitomo Electric Industries Ltd.
Turner Archene
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