Coating processes – Electrical product produced – Integrated circuit – printed circuit – or circuit board
Patent
1975-06-30
1976-08-24
Hoffman, James R.
Coating processes
Electrical product produced
Integrated circuit, printed circuit, or circuit board
427265, 427287, 427405, 427419, F02F 312, F02F 302, B05D 108
Patent
active
039768090
ABSTRACT:
A coating is disclosed herein together with a method of forming that coating on metal surfaces of an internal combustion chamber. The coating is deposited for example, on the combustion surface of a piston to form a thermal barrier and thus enable higher temperatures to be sustained within the chamber. Combustion at higher temperatures achieves a more complete fuel burning thus increasing performance and reducing emissions. The coating is formed on the combustion surface by successively depositing layers of different materials preferably applied utilizing a plasma flame spray process. More particularly, the formation of the coating on the combustion surface involves preparing the surface as by grit blasting and then initially depositing a thin (approximately 0.001 - 0.003 inches) nickel aluminum alloy layer. Thereafter, a second thicker layer (approximately 0.003 - 0.006 inches) comprised primarily of said nickel aluminum alloy and refractory zirconium oxide is deposited followed by the deposition of a still thicker layer (approximately 0.008 - 0.010 inches) primarily of zirconium oxide.
REFERENCES:
patent: 3006782 (1961-10-01), Wheildon
patent: 3010480 (1961-11-01), Ragsdale
patent: 3203321 (1965-08-01), Rosen
patent: 3459167 (1969-08-01), Briggs et al.
patent: 3552370 (1971-01-01), Briggs
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