Toward a More Fundermental Understanding of Corrosion Processes
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- Sato Norio
- Faculty of Engineering, Hokkaido University
Bibliographic Information
- Other Title
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- 腐食の基礎に関する二・三の問題
- 腐食の基礎に関する2・3の問題
- フショク ノ キソ ニ カンスル 2 3 ノ モンダイ
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Abstract
A review is given of some simplified concepts that will contribute to a better understanding of corrosion fundamentals. The corrosion process involves not only electrochemical reactions but also acid-base reactions, and it is the acid-base nature that diversifies the corrosion phenomena. Anions either catalyze or inhibit the anodic metal dissolution, and the passivation will result from the hydroxide-catalyzed mechanism of metal dissolution. Corrosion precipitates frequently control the selective mass transport in corrosion processes. Anion-selective precipitates accelerate and cation-selective precipitates decelerate corrosion propagation. A bipolar precipitate film, if anodically polarized, undergoes deprotonation and turns into a passive film. The electrochemical stability of passivated metals is determined by the electron energy band structure of the passive film. The passive film of n-type semiconducting oxides appears electrochemically more stable than the passive film of p-type semiconducting oxides.
Journal
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- CORROSION ENGINEERING
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CORROSION ENGINEERING 39 (9), 495-511, 1990
Japan Society of Corrosion Engineering
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Keywords
Details 詳細情報について
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- CRID
- 1390001206257783808
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- NII Article ID
- 130004732196
- 130006025347
- 10008852406
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- NII Book ID
- AN00225595
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- ISSN
- 18841155
- 00109355
- http://id.crossref.org/issn/00109355
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- NDL BIB ID
- 3681290
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed