B - Operations – Transporting – 24 – D
Patent
B - Operations, Transporting
24
D
57/16, 117/85, 2
B24D 3/04 (2006.01) C23C 14/06 (2006.01) C23C 16/26 (2006.01) C23C 16/27 (2006.01) C23C 16/50 (2006.01) C23C 28/00 (2006.01)
Patent
CA 2007561
-35- Abstract of the Disclosure Method of toughening the structure of a diamond or diamond-like coated tool, by the steps of: (a) depositing, by low pressure CVD, a plurality of layers of separated diamond or diamond-like particles onto a nondiamond or nondiamond-like tool substrate (i.e., SiAlON, Si3N4, SiC, Si, Ti, Co cemented WC, TiC, Ni-Mo cemented TiCN), the substrate being selected to facilitate diamond or diamond-like deposition and to retain its strength-related properties after such CVD; and (b) interposing a mechanically adherent, planarized binding material (i.e. transition metals, silicon, boron) between and on said layers of particles and across the separated particles of each particle layer, said binding material being substantially devoid of diamond graphitizing or dissolution agents. A barrier layer is deposited onto said tool substrate prior to step (a) to prevent the egress of chemicals capable of graphitizing diamond or diamond-like particles. The total thickness of the coating structure is about 50-125 microns. 3627L
Drawl William R.
Mccune Robert Corbly Jr.
Drawl William R.
Ford Motor Company Of Canada Limited
Sim & Mcburney
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