Heat-resistant member and a method for evaluating quality of a heat-resistant member
US6071627A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 1997 |
| Grant date | Jun 6, 2000 |
| Priority date | — |
| Expiry date | Mar 28, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12854
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A ceramic coating layer which is not less than 70 .mu.m in the maximum height Rmax of its profile curves and not less than 45 .mu.m in the 10-point average roughness, or which is less than 650 HV in Vickers hardness is provided on a metallic substrate. A heat-resistant member of such composition is excellent in thermal fatigue resistance and keeps an excellent heat resistance for a long period of time. Quality of a heat-resistant member is evaluated by, measuring at least one of roughness and hardness of a ceramic coating layer on a metallic substrate. According to this method, it is possible to easily and accurately evaluate a thermal resistant life of a heat-resistant member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.