Process for deposition of layered coatings on copper and alloys

Details Process for deposition of layered coatings on copper and alloys Process for deposition of layered coatings on copper and alloys

1998-07-14

1999-12-07

Bareford, Katherine A.

Coating processes

Spray coating utilizing flame or plasma heat

Inorganic carbon containing coating, not as steel

427452, 427454, 427455, 427456, C23C 404, C23C 402

Patent

active

059979577

ABSTRACT:
A process for the deposition of thick coatings with a thickness >1 mm on products made of copper or alloys thereof, wherein said products are subjected to the following operations: surface activation of the product made of copper or alloys thereof; optional heat stabilization to a temperature below the ones causing deterioration of the chemical and physical properties of the copper or alloys thereof; deposition of a first layer, for example of Ni or alloys thereof; optional interdiffusion heat treatment; optional activation of the surface of the first layer; thermal stabilization of said product at a temperature of between 20.degree. and 400.degree. C.; deposition of one or more intermediate layers of at least one of the following: Al; AlSi; Cu; Ni; NiAl; NiCr; NiCu; MCrAlY (wherein M can be Ni, Co, Fe or mixtures thereof), mixtures thereof, or mixtures of said intermediate layers with said thick coating; thermal stabilization of the product coated with said intermediate layers at a temperature of between 20.degree. and 300.degree. C.; and deposition of said thick coating on the product coated with said intermediate layers.

REFERENCES:
patent: 4095005 (1978-06-01), Kishida et al.
patent: 4576874 (1986-03-01), Spengler et al.

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