Dissolved-Oxygen-Induced Intensive Pitting Corrosion of Amorphous ZrCu Alloys in Thin NaCl Solutions
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- Tanimoto Hisanori
- Graduate School of Pure and Applied Sciences, University of Tsukuba
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- Soga Yosuke
- Graduate School of Pure and Applied Sciences, University of Tsukuba
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- Takayanagi Yoshinobu
- Graduate School of Pure and Applied Sciences, University of Tsukuba
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- Mizubayashi Hiroshi
- Graduate School of Pure and Applied Sciences, University of Tsukuba
書誌事項
- 公開日
- 2011
- 資源種別
- journal article
- DOI
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- 10.2320/matertrans.m2010437
- 公開者
- 公益社団法人 日本金属学会
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説明
Intensive pitting corrosion of amorphous (a-) Zr55Cu45 and a-Zr50Cu50 were observed by immersion in 0.2–200 mM NaCl solutions open to air at room temperature. The decreased corrosion rate in Ar-purged NaCl solution and no corrosion in ultrapure water open to air suggested that dissolved O2 and Cl− played an important role on the corrosion of the ZrCu-base amorphous alloys. The open-circuit potential showed a negative shift with increasing the NaCl concentration from 0.2 to 200 mM like that of pure Cu. These observations suggest that the corrosion of the ZrCu-base amorphous alloys in the NaCl solutions was triggered by Cu dissolution which was induced by the reduction of dissolved O2. The dissolution of Cu and Zr self-catalytically progressed by the local concentration of Cl− and hence the corrosion pits and holes were intensively formed even at the thinner NaCl concentrations.
収録刊行物
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- MATERIALS TRANSACTIONS
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MATERIALS TRANSACTIONS 52 (7), 1402-1409, 2011
公益社団法人 日本金属学会
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詳細情報 詳細情報について
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- CRID
- 1390282679228690176
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- NII論文ID
- 10029296936
- 130004454764
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- NII書誌ID
- AA1151294X
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- ISSN
- 13475320
- 13459678
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- NDL書誌ID
- 11135934
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- 本文言語コード
- en
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- 資料種別
- journal article
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- データソース種別
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- NDLサーチ
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