Title: Coating and diffusion process for improving the life of cobalt-bonded sintered carbide tools

Abstract: A process for improving the characteristics of cobalt-bonded sintered carbide articles comprising coating the surface of the article with metal of the group of osmium and ruthenium and diffusing the osmium or ruthenium into the carbide body.

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Inventors: Mynard, Brian Arthur (Bromsgrove, EN)
Jones, Bryan (Solihull, EN)
Tracey, Victor Allen (Solihull, EN)
Betteridge, Walter (Kent, EN)

Application Number: 428107
Filing Date: 1973-12-26
Publication_date: 1976-11-02
Assignee: The International Nickel Company, Inc. (New York, NY)
Primary Class(es): 419/5 419/17, 419/26
Other Classes:
US Patent Ref:

2039822	May, 1936	McKenna	29/182.
2672426	Mar, 1954	Grubel et al.	29/182.
3171192	Mar, 1965	Ortner et al.	75/203.
3264222	Aug, 1966	Carpenter et al.	75/203.

Other Refs: 2,011,0821,309,634

Sep, 1970	DT.
Mar, 1973	UK.

Primary Examiner: Hunt, Brooks H.
Assistant Examiner:
Attorney: Mulligan, Jr.; Francis J., MacQueen; Ewan C.