| 冶金因素对钢点蚀扩展的影响 |
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| 引用本文： | 张恒,陈学群,常万顺.冶金因素对钢点蚀扩展的影响[J].北京科技大学学报,2008,30(10). |
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| 作者姓名： | 张恒 陈学群 常万顺 |
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| 作者单位： | 1. 海军92474部队装备修理所,三亚,572018
2. 海军工程大学化学与材料系,武汉,430033 |
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| 摘 要： | 选择六种冶金因素各有特点的低碳钢和一种低合金钢,通过模拟闭塞腐蚀电池实验,结合冶金特点和腐蚀形貌分析,研究冶金因素对孔蚀扩展的影响. 结果表明,钢中固溶氧量、夹杂物、钙处理、磷含量及其偏析和合金元素镍铬等对点蚀扩展有重要影响. 钢中固溶氧量高、钙处理、高磷量和高镍铬量有利于抑制蚀坑扩展.
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| 关 键 词： | 低碳钢 低合金钢 闭塞腐蚀电池 蚀坑 |
Effect of metallurgical factors on the susceptibility to pitting initiation in steels |
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| ZHANG Heng,CHEN Xuequn,CHANG Wanshun.Effect of metallurgical factors on the susceptibility to pitting initiation in steels[J].Journal of University of Science and Technology Beijing,2008,30(10). |
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| Authors: | ZHANG Heng CHEN Xuequn CHANG Wanshun |
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| Abstract: | The pitting propagations of six low-carbon steels and one low-alloy steel with representative metallurgical characteristics were compared by means of occluded corrosion cell(OCC) stimulation test.Combined their metallurgical characteristic with corrosion appearance,the effect of metallurgical factors on the pitting propagation was researched.The results show that dissolved oxygen,inclusions,calcium treatment,phosphorus content and phosphoric segregation,and Ni and Cr elements in steels have important influence on the pitting propagation.A higher amount of dissolved oxygen,phosphorus,Ni and Cr elements,and calcium treatment are beneficial to restraining pitting propagation. |
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| Keywords: | low-carbon steel low-alloy steel occluded corrosion cell(OCC) corrosion pit |
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