Plasma chemical vapor depositions sio.sub.2 coated articles...

C - Chemistry – Metallurgy – 23 – C

Patent

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117/73, 117/83

C23C 16/40 (2006.01)

Patent

CA 1242616

ABSTRACT OF THE DISCLOSURE 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.

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