Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Including a second component containing structurally defined...
Patent
1988-04-18
1990-11-13
McCamish, Marion C.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Including a second component containing structurally defined...
428328, 428337, C06B 4530
Patent
active
049701142
ABSTRACT:
Pyrophoric powder can be coated on boron or carbon fibers or sintered with combustible particles. Carbon can be kept from contaminating diffusion-treated workpieces, by conducting diffusion treatment in retorts containing little or no carbon. Porosity can be created by subjecting workpiece to diffusion conditions in contact with depleting material such as powdered nickel or high-nickel aluminides or cobalt or high-cobalt aluminides. Aluminum particles can be electrophoretically deposited on foil and then diffused in. Leaching aluminum out with caustic is improved when a little H.sub.2 O.sub.2 is present in the caustic. Subsequent treatment of the leached surface with weak acid further improves pyrophoricity, and folding of the pyrophoric member extends its pyrophorically-generated high temperature dwell. Resin foil containing pyrophoric particles makes effective decoy.
REFERENCES:
patent: 3831258 (1974-08-01), Elbert et al.
patent: 4349612 (1982-09-01), Baldi
patent: 4435481 (1984-03-01), Baldi
patent: 4471358 (1984-09-01), Glasser
patent: 4799979 (1989-01-01), Baldi
Alloy Surfaces Company, Inc.
McCamish Marion C.
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