| 碳钢的不均匀性和土壤中阴离子对腐蚀的影响 |
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| 引用本文： | 银耀德,张淑泉,李洪锡,高英.碳钢的不均匀性和土壤中阴离子对腐蚀的影响[J].腐蚀科学与防护技术,1995,7(1):81-83. |
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| 作者姓名： | 银耀德 张淑泉 李洪锡 高英 |
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| 作者单位： | 中国科学院金属腐蚀与防护研究所 |
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| 摘 要： | 对埋藏在土壤中20年以上的碳钢腐蚀进行了分析,扫描电镜、能谱和金相分析结果表明,钢中夹杂物.焊缝区域易产生点蚀,土壤中存在硫酸根和氨离子也是产生点蚀的重要因素.
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| 关 键 词： | 土壤腐蚀 点蚀 碳钢 |
| 收稿时间： | 1995-01-25 |
| 修稿时间： | 1995-01-25 |
EFFECT OF CARBON STEEL INHOMOGENEITY AND ANIONS IN SOILS ON CORROSION |
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| YIN Yaode, ZHANG Shuquan,LI Hongxi,GAO Ying.EFFECT OF CARBON STEEL INHOMOGENEITY AND ANIONS IN SOILS ON CORROSION[J].Corrosion Science and Protection Technology,1995,7(1):81-83. |
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| Authors: | YIN Yaode ZHANG Shuquan LI Hongxi GAO Ying |
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| Abstract: | Corrosion behavior of carbon steel buried in soils after 20 years was studied by means of SEM,EDAX and metallographic techniques.The observations revealed that the inclu-sions in steel,welded joints and heat-treated region of the steel tube specimens resulted in pitting corrosion. It is evident that,therefore,localized and penetrated corrosion is caused chiefly by the inhomogeneity of carbon steel itself.In addition,the existence of a lots of SO2-and Cl-elements in corrosion pit indicates that anion contents in surrounding soil is an important factor for local-ized corrosion.CaCO3 deposited on the surface of buried specimens will protect the specimens from further corrosion. |
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| Keywords: | localized corrosion carbon steel soil corrosion |
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