Ceramic-sprayed member and process for making the same

Details Ceramic-sprayed member and process for making the same Ceramic-sprayed member and process for making the same

1988-04-28

1989-12-05

Rutledge, L. Dewayne

Stock material or miscellaneous articles

All metal or with adjacent metals

Microscopic interfacial wave or roughness

428632, 428633, 428652, 428680, B32B 302

Patent

active

048852139

ABSTRACT:
A sprayed member which has a ceramic-sprayed layer formed on the surface of a parent material of an aluminum alloy through a sprayed bond layer. A diffusion layer occupies 20 to 50% of the entire interface between the bond layer and the parent material. The interface between the diffusion layer and the parent material and the interface between the bond layer and the parent material are finely roughened to have a height of several microns. The diffusion layer and the fine roughness are formed by preheating the surface of the parent material at a temperature ranging from 260.degree. to 500.degree. C. prior to spraying the parent material with a material for the bond layer so that they can together enhance the adherency between the bond layer and the parent material.

REFERENCES:
patent: 4569889 (1986-02-01), Przybyszewski et al.
"Cummins/TACOM Advanced Adiabatic Engine", R. Kamo et al., SAE Papers No. 840428.

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