Selective absorber on glass and method for its production
US4228220A · kind A · utility
Inventor
Key dates
| Filing date | Jun 28, 1978 |
| Grant date | Oct 14, 1980 |
| Priority date | — |
| Expiry date | Jun 28, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12896
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.