Multi-layer coating
US8859116B2 · kind B2 · utility
0Cited by
11References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2007 |
| Grant date | Oct 14, 2014 |
| Priority date | — |
| Expiry date | Feb 17, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24942
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A multi-layer coating for protection of metals and alloys against oxidation at high temperatures is provided. The invention utilizes a multi-layer ceramic coating on metals or alloys for increased oxidation-resistance, comprising at least two layers, wherein the first layer (3) and the second layer (4) both comprise an oxide, and wherein the first layer (3) has a tracer diffusion coefficient for cations Mm+, where M is the scale forming element of the alloy, and the second layer (4) has a tracer diffusion coefficient for oxygen ions O2− satisfying the following formula:
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.