Protective metal oxide films on metal or alloy substrate surfaces susceptible to coking, corrosion or catalytic activity
US4297150A · kind A · utility
105Cited by
2References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 27, 1980 |
| Grant date | Oct 27, 1981 |
| Priority date | — |
| Expiry date | Jun 27, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S585/95
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
This case relates to a process for forming protective metal oxide films on metal or alloy substrate surfaces susceptible to coking, corrosion or catalytic activity. The process comprises first preoxidizing the substrate surface and then depositing on the pre-oxidized surface a metal oxide of Ca, Mg, Al, Ga, Ti, Zr, Hf, Ta, Nb or Cr by vapor phase decomposition of a volatile compound of the metal which has at least one metal-oxygen bond. Nitrogen, helium, argon, carbon dioxide, air or steam may be used as carrier gases for the metal compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.