Thermal barrier coatings having lower layer for improved adherence to bond coat
US6887595B1 · kind B1 · utility
41Cited by
25References
25Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 30, 2003 |
| Grant date | May 3, 2005 |
| Priority date | — |
| Expiry date | Dec 30, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/265
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A thermal barrier coatings for the underlying substrate of articles that operate at, or are exposed to, high temperatures. The thermal barrier coating includes a zirconia-containing upper layer wherein the zirconia is stabilized in the cubic crystalline phase to reduce the thermal conductivity of the coating. The thermal barrier coating further includes a zirconia-containing lower layer stabilized in the tetragonal crystalline phase that increases the adherence of the upper layer to the bond coat layer that overlies the substrate of the article to improve the resistance of the coating to spallation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.