Making and using thermal spray masks carrying thermoset epoxy coating
US6060117A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 1998 |
| Grant date | May 9, 2000 |
| Priority date | — |
| Expiry date | Aug 31, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B16/60
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Method of making a mask assembly by providing a heat resistance mask substrate having an exposed surface with a surface smoothness less than 2000 micro inches, uniformly spraying a thermoset epoxy organic coating onto such exposed surface in one or more layers to provide a coating having (e.g., a thickness equal to or less than about 0.005 inches), a smoothness characterized by an average profilometer reading (Ra) of no greater than 1.5 micrometers, said coating being devoid of pores that exceed about 0003 inch in size, and flame polishing all or a portion of such coating to effect a surface finish of about 1.0 micrometers. A mask assembly which is useful in masking areas from thermal spray particles, comprising a heat resistance substrate presenting an exposed grit blasted surface having a smoothness of less than 2000, and a thin thermoset epoxy coating bonded to said exposed surface and having a surface smoothness characterized by an average profilometer reading (Ra) no greater than 1.5.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.