| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1661069 | Surface and Coatings Technology | 2008 | 4 Pages |
Abstract
Corrosion resistances of plasma-oxidized stainless steel (AISI 316L) were studied by exposing specimens to a planar-type inductively coupled plasma, and their corrosion-resistance characteristics were evaluated. Before the plasma oxidation, the specimens were prepared by electro-polishing and soaking them into an aqueous solution of the citric acid as pre-treatment. The oxygen-argon mixture plasmas used in this study were generated at a pressure of 5.3Â Pa with a gas-flow rate ratio of argon to oxygen kept constant at 9:1. The specimens were exposed to the oxygen-argon mixture plasma at room temperature for 30Â min. Corrosion tests were carried out by exposing the specimens to hydrofluoric acid vapor for 90Â min at room temperature. As a result, these processes decreased weight loss of the specimen by corrosion to about 1/5. Passivation layer consisted of metal oxide, which was found to grow on the surface by plasma oxidation.
Keywords
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Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
Jiro Okado, Ken Okada, Asahiko Ishiyama, Yuichi Setsuhara, Kosuke Takenaka,