Micro-electrochemical in situ observation of pit initiation at precipitates in AA5182 Al-Mg alloy in 0.1 M NaCl

Yuto Sakaizawa, Izumi Muto, Yu Sugawara, Yoshiyuki Oya, Yoshihiko Kyo, Nobuyoshi Hara

研究成果: Conference contribution

2 被引用数 (Scopus)

抄録

Pit initiation at intermetallic particles in an Al-Mn alloy (AA5182-O) was investigated. Al-Fe-Mn, Al-Fe-Mn-Si, and Mg2Si intermetallic particles were detected in this alloy. In situ observation of a small electrode area was performed during potentiodynamic anodic polarization in naturally aerated 0.1 M NaCl at 298 K. For the Al-Fe-Mn particle, a trench was generated around the particle, and the trench increased as the electrode potential increased. However, no increase in size was observed at higher potentials. Then, a pit was initiated inside the trench. The same behavior was observed for the Al-Fe-Mn-Si particle. However, the trench growth stopped at a relatively low potential, and no pit was generated in the trench. There was no trench generated around Mg2Si. It appears that Si in the particles suppresses the trench formation and growth, which improves the pitting corrosion resistance of aluminum alloys.

本文言語English
ホスト出版物のタイトルECS Transactions
編集者A. P. Abbott, R. Alkire, P. Allongue, T. J. Anderson, P. N. Bartlett, M. Bayachou, S. Bhansali, N. Birbilis, A. B. Bocarsly, C. Bock, O. V. Boltalina, S. Brankovic, R. Buchheit, D. A. Buttry, S. Calabrese Barton, M. T. Carter, V. Chaitanya, G. T. Cheek, Z. Chen, D. Chidambaram, B. A. Chin, J. W. Choi, D. Chu, D. E. Cliffel, H. Deligianni, V. Di Noto, N. Dimitrov, M. Doeff, E. A. Douglas, T. Druffel, K. Edstrom, J. M. Fenton, J. Fergus, J. Fransaer, Y. Fukunaka, D. Guyomard, H. Hamada, L. M. Haverhals, P. Hesketh, A. C. Hillier, J. K. Hite, H. Imahori, M. Inaba, M. Innocenti, M. Itagaki, C. Johnson, H. Katayama, S. H. Kilgore, D. J. Kim, J. Koehne, R. Kostecki, G. Krumdick, P. J. Kulesza, J. Leddy, J. J. Lee, O. Leonte, Y. C. Lu, B. L. Lucht, R. P. Lynch, M. Manivannan, R. A. Mantz, P. Marcus, V. Maurice, M. Mauter, J. Mauzeroll, H. N. McMurray, Y. S. Meng, E. L. Miller, I. Milosev, S. D. Minteer, S. Mitra, S. Mukerjee, R. Mukundan, J. Muldoon, L. Nagahara, S. R. Narayan, P. M. Natishan, M. Navaei, J. D. Nicholas, J. Noel, S. S. Nonnenmann, C. O'Dwyer, M. E. Orazem, Y. Oren, J. G. Park, P. Pharkya, P. N. Pintauro, S. Pylypenko, K. Rajeshwar, R. P. Ramasamy, C. Rhodes, D. P. Riemer, D. Roeper, M. Rohwerder, L. Romankiw, S. V. Rotkin, J. L. M. Rupp, M. J. Sailor, D. T. Schwartz, P. K. Sekhar, N. Sharma, A. Simonian, D. K. Smith, K. C. Smith, L. Soleymani, G. R. Stafford, J. A. Staser, V. Subramanian, V. R. Subramanian, K. B. Sundaram, A. H. Suroviec, K. Suto, M. Tao, T. Tatsuma, P. C. Trulove, P. Vanysek, N. Vasiljevic, J. T. Vaughey, S. Virtanen, H. Wang, W. Wang, J. F. Whitacre, G. Williams, M. Winter, D. L. Wood, G. Wu, N. Wu, J. Xiao, Y. Xing, H. Xu, J. J. Yang, G. Zangari
出版社Electrochemical Society Inc.
ページ553-564
ページ数12
10
ISBN(電子版)9781607688273
ISBN(印刷版)9781623324797
DOI
出版ステータスPublished - 2017
イベント232nd ECS Meeting - National Harbor, United States
継続期間: 2017 10 12017 10 5

出版物シリーズ

名前ECS Transactions
番号10
80
ISSN(印刷版)1938-6737
ISSN(電子版)1938-5862

Other

Other232nd ECS Meeting
国/地域United States
CityNational Harbor
Period17/10/117/10/5

ASJC Scopus subject areas

  • 工学(全般)

フィンガープリント

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