Coated hardmetal body

Details Coated hardmetal body Coated hardmetal body

1986-06-30

1988-06-07

Swisher, Nancy A. B.

Stock material or miscellaneous articles

Composite

Of inorganic material

428699, B32B 1706

Patent

active

047496304

ABSTRACT:
A coated hardmetal body comprised of a hardmetal core which contains cobalt as well as tungsten carbide and of an oxygen containing hard substance layer free of binder metal is disclosed whose hardmetal basic body has a zone at its surface which is 0.2 to 20 microns thick and which contains the CoWB phase in addition to the hardmetal components. It is of particular advantage for the binder metal free, oxygen containing hard substance layer to be composed of aluminum oxide, zirconium oxide or aluminum oxynitride. It is further provided that at least one further binder metal free hard substance layer of carbides, nitrides, borides and/or oxides is applied to the binder metal free hard oxide layer. The coated hardmetal body may advantageously be used as a cutting bit for machining metallic workpieces. The coated hardmetal body is produced by gas phase boration and subsequent hard substance coating according to the CVD process.

REFERENCES:
patent: 3189477 (1965-06-01), Shaffer
patent: 3261673 (1966-07-01), Wheildon, Jr.
patent: 3804034 (1974-04-01), Stiglich, Jr.
patent: 3837896 (1974-09-01), Lindstom et al.
patent: 3955038 (1976-05-01), Lindstrom et al.
patent: 3977061 (1976-08-01), Lindstrom et al.
patent: 4018631 (1977-04-01), Hale
patent: 4019873 (1977-04-01), Reiter
patent: 4066821 (1978-01-01), Cook et al.
patent: 4237184 (1980-12-01), Gonseth et al.
patent: 4447263 (1984-05-01), Sugizawa et al.
Zeman, Mayerhofer and Kulmburg, Vortrage des Plansee-Seminars [Lectures at the Plansee Seminars], 1981, pp. 443-457.
Powell et al., (Eds.), Vapor Deposition, John Wiley & Sons, Inc., 1966.
Acta Crystallographica, vol. B24, 1968, pp. 930-934.

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