Method of forming a composite article by metal spraying
US5312650A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 12, 1988 |
| Grant date | May 17, 1994 |
| Priority date | — |
| Expiry date | Jan 12, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C4/18
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The method of making a composite article of different metal portions by spraying molten metal on the surface of a solid metal member that has been cleaned and preheated in a controlled atmosphere at low pressure. The molten metal is sprayed on the surface of the solid metal member, preferably by plasma jet spraying. It is rapidly solidified to be adherent to the surface of the solid metal member to form a composite preform. The composite preform is cooled at a rate sufficiently low to reduce residual stresses and then hot pressed to eliminate voids in the sprayed metal portion and metallurgically bonded to the surface of the solid member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.