Corrosion Behavior of Spheroidal Graphite Cast Iron in Simulated Groundwater
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- Yonehiro Kenji
- Graduate School of Engineering, Shibaura Institute of Technology
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- Nakata Takeshi
- Faculty of Engineering, Shibaura Institute of Technology
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- Imai Hachirou
- Faculty of Engineering, Shibaura Institute of Technology
Bibliographic Information
- Other Title
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- 模擬海成粘土層地下水中での球状黒鉛鋳鉄の腐食挙動
- モギ カイセイ ネンドソウ チ カ スイチュウ デ ノ キュウジョウ コクエン チュウテツ ノ フショク キョドウ
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Description
Nowadays, spheroidal graphite cast iron is widely used for metal tubes buried under ground or soil and structural materials. However, a kind of special soil called marine clay may acidify in such uses, causing corrosion of the metal tubes and structural materials. This research considered the effects of pH on the corrosion behavior of spheroidal graphite cast iron in simulated groundwater using polarization curve and immersing test. The results showed that while pH is 3.5 or less in the immersing experiment, the corrosion rate increases markedly. Thus, the following two factors can be considered as the reason why spheroidal graphite cast iron generates extensive corrosion in acid solution. One reason is the pearlite colony boundary where phosphorous and sulfur segregate dissolves intensely preferentially, and the other is spheroidal graphite and cementite in pearlite promote hydrogen evolution reaction.
Journal
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- Journal of Japan Foundry Engineering Society
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Journal of Japan Foundry Engineering Society 75 (9), 605-611, 2003
Japan Foundry Engineering Society
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Keywords
Details 詳細情報について
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- CRID
- 1390282681484426368
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- NII Article ID
- 10013907854
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- NII Book ID
- AN10514770
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- ISSN
- 21855374
- 13420429
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- NDL BIB ID
- 6702330
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- CiNii Articles
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- Abstract License Flag
- Disallowed