Rubbing contact seal member with low wear coating and metal-containing undercoat
US4093243A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 1976 |
| Grant date | Jun 6, 1978 |
| Priority date | — |
| Expiry date | Aug 10, 1996 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28D19/047
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A member including a metal substrate, a low wear coating formed by flame spraying a mixture of a wear resistant metal oxide such as nickel oxide and a solid lubricating material such as calcium fluoride to serve as a high temperature rubbing contact seal layer and at least one undercoat layer formed by flame spraying between the substrate and the surface layer, characterized by the presence of a metal in at least one of the undercoat layers mixed with a commonly employed fundamental material, which is the wear resistant metal oxide optionally with the addition of the solid lubricating material, in order to lessen the difference in thermal expansion coefficient between the individual undercoat layer and the surface layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.