Process for producing an element for absorbing solar radiation for a thermal concentrating solar power plant
US9551507B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 2012 |
| Grant date | Jan 24, 2017 |
| Priority date | — |
| Expiry date | May 19, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49355
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A solar radiation absorber element for a thermal concentrating solar power plant is achieved by forming a selective coating on an outer surface of a substrate made from stainless steel, chosen from stainless steels presenting an aluminum content of more than 0.5% by weight. Formation of the selective coating includes a surface treatment step of the substrate, by polishing, and a heat treatment step of the substrate, in an oxidizing atmosphere, in a temperature range included between 550° C. and 650° C. The heat treatment in particular enables at least one intrinsically selective superficial thin layer to be formed on the outer surface of the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.