Y2O3 spray-coated member and production method thereof
US7494723B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 2005 |
| Grant date | Feb 24, 2009 |
| Priority date | — |
| Expiry date | Oct 17, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/60
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A member is obtained by forming a Y2O3 black spray coating on a surface of a substrate or covering the surface of the substrate with a Y2O3 black spray coating through an undercoat or a middle layer. This coating has good heat characteristics and is good in the resistance to damaging through a high hardness. The Y2O3 black spray coating is produced by subjecting white Y2O3 powdery material to a plasma spraying in an inert gas atmosphere containing substantially no oxygen or by forming a Y2O3 white spray coating and then irradiating an electron beam or a laser beam to this coating to melt at least a part of the white coating under heating to thereby smoothen denseness and blacken the surface of the coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.