Stock material or miscellaneous articles – All metal or with adjacent metals – Composite; i.e. – plural – adjacent – spatially distinct metal...
Patent
1990-04-12
1991-04-16
Dean, R.
Stock material or miscellaneous articles
All metal or with adjacent metals
Composite; i.e., plural, adjacent, spatially distinct metal...
428675, 428676, 428680, 428686, B32B 1500, B32B 1520
Patent
active
050081608
ABSTRACT:
Adherent metal coatings of metals that cannot be adherently applied directly onto a desired substrate metal by chemical vapor deposition at a temperature below about 300.degree. C. are obtained by applying an adherent metal undercoating to the surface of the metal substrate which weakly or not at all chemisorbs carbon monoxide, then applying the desired outercoat metal to the undercoated substrate by chemical vapor deposition, using a heat decomposable metal carbonyl as the source of the desired outer coating metal. The undercoating metal may be applied by conventional plating processes such as electroplating or electroless plating. In preferred embodiments, the substrate is iron or steel or their alloys, the undercoating metal is copper, and the outer coating metal is a ferrous metal, i.e., nickel, iron, or cobalt.
REFERENCES:
patent: 3432278 (1969-03-01), Richards
"The Formation of Metallic Coatings by Vapor-Phase Techniques," C. F. Powell and I. E. Campbell. Metal Finishing, vol. 50, No. 4 (Apr. 1952), pp. 64-69.
Dean R.
Koehler Robert R.
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