Plasma chemical vapor deposition SiO.sub.2-x coated articles and plasma assisted chemical vapor deposition method of applying the coating
US4759993A · kind A · utility
13Cited by
4References
25Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 25, 1985 |
| Grant date | Jul 26, 1988 |
| Priority date | — |
| Expiry date | Apr 25, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C16/402
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A coated stainless steel article and a method of preparing the article are disclosed. The coating is a plasma chemical vapor deposited coating, formed from a plasma of nitrous oxide, a silane, and an energy transfer agent (such as He, Ar). The resulting coating is adherent, corrosion resistant, and has a thickness sufficient to mask and cover the features of the stainless steel substrate, and to provide a pitting potential (in 3.5% NaCl) of greater than 600 millivolts, a J.I.S. 8502 (1982) versus a saturated calomel electrode a salt spray test rating in 5% NaCl-0.02% hydrogen peroxide of at least B.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.