Process for depositing protective refractory metal coatings
US4002782A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 1, 1974 |
| Grant date | Jan 11, 1977 |
| Priority date | — |
| Expiry date | Nov 1, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1284
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The process of providing protective coatings of refractory metals and alloys on to any metallic base such as: iron, aluminum, chromium, cobalt, copper, nickel, magnesium, tin, titanium, or on to any metallic alloy base such as: steels, cast irons, brasses, bronzes, and solders at temperatures as low as ambient or below, including selecting an electrolyte material capable of dissociation into ions, such that at 25.degree. C the equivalent conductance of 0.1 normal solution of electrolyte divided by that of the electrolyte solution at infinite dilution is between 0.13 and 0.93, providing a particulate refractory metal having a melting point of at least 1490.degree. C, to be deposited within the near-surface region of the base metal, admixing 99 to 50 percent by weight of said refractory metal and 1 to 50 percent by weight of said electrolyte, the refractory metal having a nascent surface capable of producing ions in solution, ionizing said refractory metal to a concentration of about 1 to 20,000 mg. of refractory metal per liter of solution, and at least partially surrounding said refractory metal with said electrolyte, contacting and at least partially coating the base metal with th…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.