The effect of Mg on activation of aluminum in pitting corrosion.

• SATO Fumihiro

  Materials, Process and Applied Mechanics Research Section, Technical Department, Aluminum & Copper Division, KOBE STEEL, LTD

• NEWMAN R. C.

  Corrosion & Protection Center (UMIST, UK)

書誌事項

タイトル別名

• effect of Mg on activation of aluminum in pitting corrosion

抄録

The effect of Mg on pitting corrosion of aluminum has been studied in terms of activation, repassivation, in comparison with the effect of Zn. The pitting potential and passive current in 0.5 NaCl were slightly decreased by alloyed Mg, respectively, but the repassivation potential tended to increase. In current transients and open circuit potential measurements, preferential dissolution of Mg, causing an aluminum enrichment, was considered in 6 M HC1 (pit-like solution) . In addition, after immersion in 6 M HC1, the pitting potential increased over the value of pure Al. Therefore, it can be considered that alloyed Mg has little effect to activate aluminum at first, but that aluminum dissolution rate is reduced by an aluminum enrichment caused by the preferential dissolution of Mg in the local environment.

収録刊行物

• 軽金属

  軽金属 48 (8), 385-389, 1998

  一般社団法人 軽金属学会

キーワード

• aluminum
• pitting corrosion
• electrochemical analysis

詳細情報

• CRID: 1390001206336225536
• NII論文ID: 10002665068
• NII書誌ID: AN00069773
• DOI: 10.2464/jilm.48.385
• COI: 1:CAS:528:DyaK1cXlslKktrc%3D
• ISSN: 18808018
• ISSN: 04515994
• NDL書誌ID: 4652054
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4652054
• 本文言語コード: en
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