| 磷偏析对钢耐蚀性影响的机理 |
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| 引用本文： | 常万顺,陈学群,李国民.磷偏析对钢耐蚀性影响的机理[J].装备环境工程,2004,1(5):31-34. |
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| 作者姓名： | 常万顺 陈学群 李国民 |
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| 作者单位： | 海军工程大学,文理学院,湖北,武汉,430033 |
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| 基金项目： | 国家自然科学资金资助项目(95571055) |
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| 摘 要： | 采用闭塞腐蚀电池和磷钼蓝比色法初步研究了磷的偏析对钢耐蚀性影响的机理。研究结果表明:钢中含磷高,其闭塞腐蚀电池的电流小;有磷偏析的钢在闭塞腐蚀电池中会形成沿磷偏析方向的腐蚀沟槽,凸起部位含磷量高,凹下部位含磷量低;钢中的磷溶解下来之后,形成磷酸盐缓蚀剂沉积在钢的表面,减缓了阳极溶解速度。
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| 关 键 词： | 磷偏析 闭塞腐蚀电池 磷钼蓝比色法 |
| 文章编号： | 1672-9242(2004)02-0031-04 |
| 修稿时间： | 2004年8月26日 |
Research of the Mechanism of Phosphor Segregation Effects to the Steel's Corrosion Resistance |
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| CHANG Wan-shun,CHEN Xue-qun,LI Guo-min.Research of the Mechanism of Phosphor Segregation Effects to the Steel''''s Corrosion Resistance[J].Equipment Environmental Engineering,2004,1(5):31-34. |
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| Authors: | CHANG Wan-shun CHEN Xue-qun LI Guo-min |
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| Abstract: | The mechanism of phosphor segregation's effects to the steel's corrosion resistance was studied with the occluded corrosion cell (OCC) and colorimetry of phosphor molybdenum blueness. It was indicated that the current of OCC was low while the content of the phosphor was high,and that the corrosion groove formed with the phosphor segregation in the OCC of the segregated steel, the content of phosphor was higher in the ridge than that in the groove,the phosphor in the steel dissolved to form a kind of phosphatic corrosion inhibitor on the surface of the steel,which slowed down the dissolution of the anode. |
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| Keywords: | phosphor segregation colorimetry of phosphor molybde-num blueness occluded corrosion cell |
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