Heat-resistant member
US5579534A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 19, 1995 |
| Grant date | Nov 26, 1996 |
| Priority date | — |
| Expiry date | May 19, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1209
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A heat-resistant member is constructed by having a ceramic coating layer deposited on the surface of a metallic substrate through the medium of a metallic bonding layer. The metallic bonding layer is composed of at least two layers, i.e. a layer of an aggregate of minute particles disposed on the metallic substrate side and a layer of an aggregate of coarse particles disposed on the ceramic coating layer side. Otherwise, the metallic bonding layer is composed of at least three layers, i.e. two layers of an aggregate of coarse particles disposed one each on the metallic substrate side and the ceramic coating layer side and one layer of an aggregate of minute particles interposed between these two layers of an aggregate of coarse particles. These layers are obtained by the low pressure ambient plasma thermal spraying using a fine powder or a coarse powder of an alloy resistant to corrosion and oxidation. The metallic bonding layer constructed as described above is excellent in the ability to resist high temperature oxidation and high temperature corrosion and stable to tolerate thermal fatigue and thermal impacts. Thus, it is capable of preventing the thermal barrier coating layer fr…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.