Method of producing low wear coating reinforced with brazing solder for use as rubbing seal
US4095005A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 1976 |
| Grant date | Jun 13, 1978 |
| Priority date | — |
| Expiry date | Aug 10, 1996 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28D19/047
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A low wear coating formed on a metal substrate to serve as a high temperature rubbing seal layer, comprising a surface layer made fundamentally of a wear resistant metal oxide such as nickel oxide and a solid lubricating material such as calcium fluoride and at least one intermediate layer made fundamentally of the metal oxide optionally with the addition of the lubricating material, wherein at least an outmost intermediate layer as well as an inmost region of the surface layer is impregnated with a brazing solder. The solder is added in the form of powder to the material of the intermediate layer prior to a flame spraying process and later caused to melt and permeate into the surface layer formed by flame spraying.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.