Sheet metal with an aluminum-containing coating having low emissivity
US6207299A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 3, 1997 |
| Grant date | Mar 27, 2001 |
| Priority date | — |
| Expiry date | Oct 3, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12757
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A coating layer for sheet metal is provided that is comprised of an aluminum-silicon alloy having low emissivity. The coated sheet metal may be used as heat shield material, particularly for heat sources having temperatures greater than 500.degree. C., which sources may be, e.g., the hotter parts of the conduits of automotive exhaust systems. The sheet metal may be sheet steel coated on at least one of its principal surfaces with a layer of a coating comprised of an alloy of silicon in the amount of 7-11 wt. % and aluminum in the amount of 87-93 wt. %. The coated surface of the sheet has a monochromatic emissivity less than 0.15 for all wavelengths in the range of 1.5-15 microns.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.