COATING AND ACTIVATION OF METALS
Assignee
ALLOY SURFACES COMPANY, INC., A CORP. OF DE
Filed
Apr 18, 1988
Granted
Nov 13, 1990
Location
WYNNEWOOD PA US
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 H2 O2 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.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Mar 8, 1990
Rescinded
May 4, 1990
Duration
1 month
Inventor
- 1ALFONSO L. BALDI
Record Details
- Patent number
- US 4970114
- Application
- 07182718
- Aerospace match
- No
- Dataset source
- 35 USC §181 SO records