Coating processes – Electrical product produced – Integrated circuit – printed circuit – or circuit board
Patent
1973-04-23
1976-06-01
Kendall, Ralph S.
Coating processes
Electrical product produced
Integrated circuit, printed circuit, or circuit board
427191, 427253, 427237, 427239, 291961, 291962, 427423, C23C 900
Patent
active
039610985
ABSTRACT:
An article is provided with improved resistance to hot corrosion through a coating on a metal surface based on an element selected from Fe, Co and Ni, the coating comprising a filled matrix bonded by interdiffusion with the substrate. The matrix is applied by impinging on the substrate metal surface a plurality of heated metallic particles, such as by plasma spraying. The coating includes a filler metal of aluminum and preferably an alloy of aluminum and at least one other element, for example Cr, deposited on and interdiffused with the matrix, such as through a halide vapor deposition process employing a mixture of aluminum powder and other powders. As a result of application of the filler metal, there is provided from the matrix a coating layer of an alloy including an average of about 8-20 weight percent aluminum, the application process resulting in substantial recrystallization of the matrix.
REFERENCES:
patent: 3257230 (1966-06-01), Wachtell et al.
patent: 3290126 (1966-12-01), Monson
patent: 3436512 (1969-04-01), Cape
patent: 3594219 (1971-07-01), Maxwell et al.
patent: 3598638 (1971-08-01), Levine
patent: 3667985 (1972-06-01), Levine et al.
patent: 3676085 (1972-07-01), Evans et al.
patent: 3720537 (1973-03-01), Rigney
patent: 3846159 (1974-11-01), Bornstein et al.
patent: 3859061 (1975-01-01), Speirs et al.
General Electric Company
Kendall Ralph S.
Lawrence Derek P.
Sachs Lee H.
Wolfe, Jr. Charles R.
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