Solid particle erosion resistant coating utilizing titanium carb

Details Solid particle erosion resistant coating utilizing titanium carb Solid particle erosion resistant coating utilizing titanium carb

1985-02-07

1986-10-07

Lechert, Jr., Stephen J.

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

75240, 75241, 419 14, 419 15, 419 16, 419 17, 419 18, 419 23, 419 25, 419 48, 419 49, 419 57, 428689, 428698, 428699, 106299, 106302, 106304, C22C 2906

Patent

active

046157344

ABSTRACT:
A solid particle erosion resistant coating includes angular titanium carbide particles uniformly dispersed through a high chromium iron matrix. In one form, the aggregate comprises, by weight, about 30-50% TiC, about 10-30% Cr, about 1.5-5% C and the balance essentially iron in the form of ferrite. The matrix also includes metallurgically identifiable amounts of high chromium content M.sub.7 C.sub.3 carbides therethrough. The coating does not exhibit austenitic or martensitic structure therehthough. A powder alloy consolidated body also includes a surface adjacent region having a similar TiC and high chromium iron matrix. Further, a method for obtaining the coating includes heating above the austenitization temperature of the matrix alloy and below the melting temperature of iron, and cooling the aggregate so as to attain iron in the form of ferrite in the matrix.

REFERENCES:
patent: 3663214 (1972-05-01), Moore et al.
patent: 3725016 (1973-04-01), Mal et al.
patent: 3819364 (1974-06-01), Frehn
patent: 4432883 (1984-02-01), Denzine et al.
patent: 4441939 (1984-04-01), Lemkey et al.

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