Hollow sphere ceramic particles for abradable coatings
US4450184A · kind A · utility
59Cited by
5References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 16, 1982 |
| Grant date | May 22, 1984 |
| Priority date | — |
| Expiry date | Feb 16, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2982
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A hollow sphere ceramic flame spray powder is disclosed. The desired constituents are first formed into agglomerated particles in a spray drier. Then the agglomerated particles are introduced into a plasma flame which is adjusted so that the particles collected are substantially hollow. The hollow sphere ceramic particles are suitable for flame spraying a porous and abradable coating. The hollow particles may be selected from the group consisting of zirconium oxide and magnesium zirconate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.