Claims
- 1. A process for manufacturing an aluminum part comprising the steps of:
- providing an aluminum base;
- chemically combining the aluminum base with chromium to form a chromate conversion coating layer on said aluminum base formed as a compound of the aluminum base;
- spray depositing and curing a primer coat on said chromate conversion coating layer, said primer coat being a polyurethane material and having a thickness of from 0.1 to 2.0 mils;
- thereafter spray depositing and curing a basecoat on said primer coat to cover said primer coat and to form a dielectric barrier, said basecoat being a polyurethane material and having a thickness of from 0.1 to 2.0 mils;
- vacuum depositing indium to form a film having a thickness of 25 to 2000 angstroms covering said basecoat including a plurality of discrete islands of the indium appearing macroscopically as a continuous film and having a plurality of macroscopically unobservable channels between the islands to maintain the film electrically non-conductive over said basecoat;
- spray depositing and curing a layer of clear resinous protective dielectric topcoat to completely cover said vacuum deposited indium film whereby said channels are filled for bonding said indium film to said basecoat.
Parent Case Info
This is a division, of application Ser. No. 07/886,496, filed on May 22, 1992, now U.S. Pat. No. 5,290,625.
US Referenced Citations (14)
Divisions (1)
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Number |
Date |
Country |
Parent |
886496 |
May 1992 |
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