Stock material or miscellaneous articles – Composite – Of quartz or glass
Patent
1978-06-28
1980-10-14
Mack, John H.
Stock material or miscellaneous articles
Composite
Of quartz or glass
204 30, 204 37R, 204 38B, 204 40, 427168, 428630, 428673, 126901, C25D 554, C25D 510
Patent
active
042282209
ABSTRACT:
An improved selective absorber on a glass substrate having high solar absorption and low infrared emission. The Selective Absorber on a glass substrate includes an electrically conducting layer of silver metal having a thickness on the order of 0.1 microns, and an absorbing layer of either black nickel or, alternatively, a layer of oxidized iron over a layer of nickel or bright nickel. The method of this invention defines the process of producing the Selective Absorber on a glass substrate by thoroughly cleaning the glass, chemically depositing a thin layer of silver metal over the clean glass surface, then electroplating an absorbing layer over the silver layer. The absorbing layer may be electroplated black nickel or, alternatively, an electroplated layer of nickel or bright nickel, such as cobalt-nickel, and an electroplated cover layer of iron. The glass substate and composite layers are heat treated to thermally cured to improve its optical and properties.
REFERENCES:
patent: 1977639 (1934-10-01), Langdon
patent: 2219695 (1940-10-01), Morris et al.
patent: 2753928 (1956-07-01), Gray
patent: 2996406 (1961-08-01), Weinrich
patent: 3098756 (1963-07-01), Haracz
patent: 3920413 (1975-11-01), Lowery
patent: 3978272 (1976-08-01), Donley
patent: 3983266 (1976-09-01), Bahls
patent: 4098956 (1978-07-01), Blickensderfer
patent: 4104134 (1978-08-01), Roberts
Metal Finishing Guidebook & Directory 1975; Metals and Plastics Publications, Inc., Hackensack, N.J., p. 272.
Haller John L.
Leader William
Mack John H.
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