Stock material or miscellaneous articles – Composite – Of metal
Patent
1996-03-18
1999-09-07
Zimmerman, John J.
Stock material or miscellaneous articles
Composite
Of metal
428701, B32B 1520
Patent
active
059485426
ABSTRACT:
A colored anodic coating for use on surfaces of substrates, e.g. aluminum substrates in which it is desirable to maintain a high solar absorptance (.alpha.) and a high infrared emittance (.epsilon.), particularly in low earth orbit space environments. This anodic coating is preferably a dark colored coating, and even more preferably a black coating. This coating allows a touch temperature within an acceptable design range to preclude burning of an astronaut in case of contact, but also allows a solar radiation absorption in an amount such that an .alpha./.epsilon. ratio of unity is achieved. The coating of the invention comprises a first layer in the form of an acid anodized colored anodic layer for achieving a high solar absorptance and a second or high emittance layer in the form of a clear acid anodized layer for achieving a high emittance. The entire coating is quite thin, e.g. 1-2 mils and is quite stable in a hostile space environment of the type encountered in a low earth orbit. The coating is obtained by first creating the high emittance clear anodized coating on the metal surface followed by anodizing using a colored anodizing process.
REFERENCES:
patent: 4310586 (1982-01-01), Sheasby et al.
patent: 4397716 (1983-08-01), Gilliland et al.
patent: 4511614 (1985-04-01), Greeson et al.
patent: 4647347 (1987-03-01), Schoener et al.
patent: 4648911 (1987-03-01), Gruninger
patent: 4904353 (1990-02-01), Shepard et al.
patent: 5035949 (1991-07-01), Shepard et al.
patent: 5217600 (1993-06-01), Le et al.
patent: 5296285 (1994-03-01), Babel et al.
patent: 5401573 (1995-03-01), Babel et al.
patent: 5472788 (1995-12-01), Benitez-Garriga
patent: 5478415 (1995-12-01), Massad et al.
Sealing of Electrolytically Formed Porous Films of Aluminum by Nickel Fluoride Process, Kalantary et al., Plat. Sur. Finish, (1993), 80(12), pp. 52-56.
Chesterfield John L.
Le Huong Giang
Aluminum Finishing Corp.
McDonnell Douglas Corporation
Zimmerman John J.
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