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水溶液中での腐食に伴う炭素鋼への水素侵入
https://doi.org/10.57375/00000042
https://doi.org/10.57375/000000423ab8e081-5f7c-4583-94dc-b2a41ce66bab
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
kiyou4213.pdf (7.2 MB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2012-08-01 | |||||
| タイトル | ||||||
| タイトル | 水溶液中での腐食に伴う炭素鋼への水素侵入 | |||||
| タイトル | ||||||
| タイトル | Hydrogen Penetraion into Carbon Steel Caused by Corrosion in Aqueous Solutions | |||||
| 言語 | en | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | corrosion | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | cathodic polarization | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | corrosion products | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | hydrogen analysis | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | carbon steel | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | departmental bulletin paper | |||||
| ID登録 | ||||||
| ID登録 | 10.57375/00000042 | |||||
| ID登録タイプ | JaLC | |||||
| 著者 |
羽木, 秀樹
× 羽木, 秀樹× 小野, 源太× Hagi, Hideki× Ono, Genta |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | For the purpose of preventing an accident due to the hydrogen embrittlement, we have examined the hydrogen penetration into S25C carbon steel specimens caused by corrosion in aqueous solutions. The specimen weight was measured before and after immersion test, and corrosion rate was calculated from the change in specimen weight. The corrosion rate decreased with increasing of pH in acid solutions of pH2-4. In the solutions of pH4-8, the corrosion rate was approximately constant, and in the solution larger than pH9, the corrosion rate slightly decreased. The corrosion reaction in the solution of pH3 was determined by the anodic reaction of iron dissolution and the cathodic reaction of hydrogen evolution. In the solutions of pH5-9, the reaction was rate-determined by the cathodic reaction, which was a reduction reaction of the O2 gas dissolved in the solutions. For the specimens covered by corrosion products, it was difficult to analyze hydrogen in the carbon steel specimens by using the method of hydrogen extraction by melting at high temperature, because the corrosion products contained large amount of hydrogen. Therefore, we examined a new method to obtain the concentration of hydrogen in the specimen corroded in aqueous solutions. The concentration of hydrogen was measured for the specimens polarized at some electrode potentials, at which the hydrogen evolution reaction was dominant, and the hydrogen concentration at the corrosion potential (Ecorr) was extrapolated from the hydrogen concentration measured at less-noble potentials. In acid solutions a large amount of hydrogen penetrated into the carbon steel specimens, and the hydrogen concentration at Ecorr decreased with increase of the pH. In the neutral and alkaline solutions, the corrosion was determined by the reduction reaction of the O2 gas dissolved in the solutions, and a small amount of hydrogen penetrated into the specimens. | |||||
| 書誌情報 |
福井工業大学研究紀要 号 42, p. 100-109, 発行日 2012-08-01 |
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| 出版者 | ||||||
| 出版者 | 福井工業大学 | |||||
| 書誌レコードID | ||||||
| 識別子タイプ | NCID | |||||
| 関連識別子 | TF00008501 | |||||
| 著者版フラグ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
