書誌事項
- タイトル別名
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- The Effect of Components Dissolved in Tap Water on Copper-corrosion Rate
- ドウ ノ フショク ソクド ニ オヨボス ジョウスイチュウ ノ ヨウカイ セイブン ノ エイキョウ
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説明
Copper tube is generally used in water supplying systems, however the copper tube rarely suffers from a type I pitting-corrosion. To begin with, the effect of components dissolved in tap water on copper-corrosion rate was investigated in this paper.<br>Copper specimens were immersed in 20 samples of tap water. After 48 hours immersion tests, electrochemical impedance spectroscopy (EIS) measurements were carried out. The copper-corrosion rate was estimated by the result of the EIS measurement. A relationship between the copper-corrosion rate and components dissolved in the tap water was calculated from a multiple regression analysis. This analysis shows that the copper corrosion-rate increases with concentration of a free carbon dioxide.<br>Polarization curves of the copper specimens were also measured in the tap water samples. Cathodic polarization curves in 20 waters have various profiles in the range of 0 to -0.4V vs. SSE. The slope (ΔV/mV decade-1) of the cathodic polarization curve at -0.25V vs. SSE decreased as the copper corrosion-rate decreased. The profile of the cathodic polarization curve might depend on a state of the oxide film on the surface of copper. It is considered that protective oxide film prevents reduction of dissolved oxygen and that copper corrosion-rate decreases with inhibition of the reduction reaction.
収録刊行物
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- Zairyo‐to‐Kankyo
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Zairyo‐to‐Kankyo 51 (6), 240-249, 2002
公益社団法人 腐食防食学会
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詳細情報 詳細情報について
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- CRID
- 1390282681235195264
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- NII論文ID
- 130004238819
- 10008562355
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- NII書誌ID
- AN10235427
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- COI
- 1:CAS:528:DC%2BD38XltFCru7o%3D
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- ISSN
- 18819664
- 09170480
- http://id.crossref.org/issn/09170480
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- NDL書誌ID
- 6185894
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可