Coated article

Details Coated article Coated article

1974-11-15

1976-05-18

Rutledge, L. Dewayne

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

29197, B32B 1500

Patent

active

039574547

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: 3290126 (1966-12-01), Monson
patent: 3542530 (1970-11-01), Talboom et al.
patent: 3594219 (1971-07-01), Maxwell et al.
patent: 3649225 (1972-03-01), Simmons

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