Method of producing thin, hard coating

Details Method of producing thin, hard coating Method of producing thin, hard coating

1984-08-27

1985-09-10

Pianalto, Bernard D.

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

427 39, 4272481, 427249, 427282, 427295, 427327, B05D 306

Patent

active

045405964

ABSTRACT:
Rolling cone rock bit seal and bearing hard surfaces having been made fully ready for assembly are first provided thin overlay coatings to enhance the resistance of the surfaces to both wear and corrosion. The coating is an engineering ceramic comprised of at least one nonmetallic element selected from a list consisting of C, O, and N, combined with at least one metallic element selected from a list consisting of Ti, Hf, Zr, Nb, Ta, W, B, Al, Co, and Cr. In a modified physical vapor deposition process, the selected coating will be developed at a temperature not to exceed 400.degree. Fahrenheit.

REFERENCES:
patent: 3480341 (1969-11-01), Hickernell
patent: 3604523 (1971-09-01), Lichte
patent: 3913988 (1975-10-01), Scales et al.
patent: 3922038 (1975-11-01), Scales
patent: 3946817 (1976-03-01), Prince
patent: 4412899 (1983-11-01), Beale

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