| Ho对AZ91镁合金腐蚀行为的影响 |
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| 引用本文： | 宋雨来,刘耀辉,朱先勇,王文琴.Ho对AZ91镁合金腐蚀行为的影响[J].吉林大学学报(工学版),2011,41(2):366-370. |
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| 作者姓名： | 宋雨来 刘耀辉 朱先勇 王文琴 |
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| 作者单位： | 1. 吉林大学,材料科学与工程学院,长春,130022;吉林大学,汽车材料教育部重点实验室,长春,130022
2. 吉林大学,机械科学与工程学院,长春,130022 |
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| 基金项目： | 国家自然科学基金项目(50901035); 吉林省科技发展计划项目(20080148) |
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| 摘 要： | 采用重力铸造方法制备了3种Ho改性AZ91镁合金。通过腐蚀实验对改性合金的自腐蚀和电偶腐蚀行为进行了研究。结果表明,随着Ho含量的增加,改性合金的自腐蚀性能和电偶腐蚀性能逐步提高,当Ho的质量分数为1.10%和2.16%时,合金的耐蚀性能较佳。此外,阴极的特性对改性合金的腐蚀性能有明显影响,4种材料的阴极作用由弱到强依次为:铝硅合金,纯铝,45#钢和球墨铸铁。Ho通过抑制β相的阴极作用,增加自腐蚀电位,提高了合金的腐蚀性能。
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| 关 键 词： | 材料合成与加工工艺 镁合金 钬 自腐蚀 电偶腐蚀 |
Influence of Ho on corrosion behavior of AZ91 magnesium alloy |
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| SONG Yu-lai,LIU Yao-hui,ZHU Xian-yong,WANG Wen-qin.Influence of Ho on corrosion behavior of AZ91 magnesium alloy[J].Journal of Jilin University:Eng and Technol Ed,2011,41(2):366-370. |
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| Authors: | SONG Yu-lai LIU Yao-hui ZHU Xian-yong WANG Wen-qin |
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| Affiliation: | SONG Yu-lai1,2,LIU Yao-hui1,ZHU Xian-yong3,WANG Wen-qin1,2(1.College of Materials Science and Engineering,Jilin University,Changchun 130022,China,2.Key Laboratory of Automobile Materials of Ministry of Education,3.College of Mechanical Science and Engineering,China) |
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| Abstract: | Three kinds of AZ91 magnesium alloys,modified by holmium,were prepared using gravity casting.The behaviors of self-corrosion and galvanic corrosion of the modified alloys were investigated by corrosion tests,respectively.The results indicated that both self-corrosion and galvanic corrosion resistance of the modified alloys gradually increased with increasing the Ho content,and the magnesium alloys containing 1.10% and 2.16% Ho exhibited better corrosion resistance.In addition,the characteristics of the cath... |
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| Keywords: | materials synthesis and processing technology magnesium alloy Ho self-corrosion galvanic corrosion |
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