フッ素添加水溶液で電解処理したSUS304ステンレス鋼の 耐食性および不動態皮膜の解析

URI http://harp.lib.hiroshima-u.ac.jp/it-hiroshima/metadata/12297
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Title
フッ素添加水溶液で電解処理したSUS304ステンレス鋼の 耐食性および不動態皮膜の解析
Title Alternative
Corrosion resistance of SUS304 stainless steel after electrolytic treatment with aqueous solution containing fluorine and the analysis of passive film
Author
氏名 王 栄光
ヨミ オウ エイコウ
別名 Wang Rongguang
氏名 山本 正登
ヨミ ヤマモト マサト
別名 Yamamoto Masato
氏名 土取 功
ヨミ ツチトリ イサオ
別名 Tsuchitori Isao
氏名 佐藤 直子
ヨミ サトウ ナオコ
別名 Sato Naoko
氏名 中井 誠
ヨミ ナカイ マコト
別名 Nakai Makoto
Subject
fluorine
passive film
electrolytic treatment
corrosion
FE-TEM
XPS
TOF-SIMS
Abstract

The corrosion resistance of SUS304 stainless steel before and after electrolytic treatment with aqueous solutions containing fluorine was investigated and the FE-TEM, XPS and TOF-SIMS analyses were conducted to the passive film. The corrosion resistance of the steel in acidic 6.0% FeCl3 solution was enhanced to more than twice by the electrolytic treatment, and the pitting potential of 2B surface in 1.0 M NaCl solution increased from 283 mV to 363 mV (vs. SSE). The enhancement is likely related to the formation of a stable, dense and uniform passive film, which should be attributed to the enrichment of chromium and the formation of stable chromium fluoride in the passive film, the removal of impurities and inclusions, and the suppression of specific adsorption of chloride ions due to the electronegative repulsion of fluoride.

Journal Title
広島工業大学紀要. 研究編
Volume
53
Spage
229
Epage
238
Published Date
2019-02
Publisher
広島工業大学
ISSN
1346-9975
NCID
AA11599110
Language
jpn
NIIType
Departmental Bulletin Paper
Text Version
出版社版
Rights
publisher
Set
it-hiroshima