| 钇对压铸AZ91镁合金耐腐蚀性能的影响 |
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| 引用本文： | 张诗昌,胡衍生,魏伯康. 钇对压铸AZ91镁合金耐腐蚀性能的影响[J]. 铸造, 2005, 54(9): 881-883 |
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| 作者姓名： | 张诗昌 胡衍生 魏伯康 |
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| 作者单位： | 1. 武汉科技大学高温陶瓷及耐火材料省部共建国家重点实验室培育基地,湖北,武汉,430081
2. 华中科技大学材料科学与工程学院,湖北,武汉,430074 |
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| 摘 要： | 研究了在中性NaCl水溶液中压铸AZ91及AZ91 1%Y合金的腐蚀性能.结果表明,在相同浓度及相同温度的NaCl腐蚀介质中,压铸AZ91 1%Y合金的腐蚀速率明显低于AZ91合金.对压铸AZ91及AZ91 1%Y镁合金腐蚀层中各元素的XPS分析结果表明,AZ91 1%Y合金腐蚀试样中存在Y的氧化物,可以起到钝化保护膜的作用,从而提高了镁合金的耐腐蚀性能.
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| 关 键 词： | 压铸镁合金 钇 腐蚀性能 |
| 文章编号： | 1001-4977(2005)09-0881-03 |
| 收稿时间： | 2005-01-25 |
| 修稿时间： | 2005-05-12 |
Effect of Yttrium on Corrosion Behavior of Die Cast AZ91 Magnesium Alloy |
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| ZHANG Shi-chang,HU Yan-sheng,WEI Bo-kang. Effect of Yttrium on Corrosion Behavior of Die Cast AZ91 Magnesium Alloy[J]. Foundry, 2005, 54(9): 881-883 |
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| Authors: | ZHANG Shi-chang HU Yan-sheng WEI Bo-kang |
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| Abstract: | The corrosion behavior of Die cast AZ91 and AZ91+1%Y magnesium alloys are investigated in sodium chloride solution at pH=7.The results show that the corrosion rate of AZ91+1%Y alloy is much lower than that of AZ91 alloy in sodium chloride solutions with the same of concentration and of temperature.The XPS analysis of the elements in corrosive product of the alloys indicates that there existed yttrium oxide which can be served as a protect film,improving anti-corrosion characters of the magnesium alloy. |
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| Keywords: | die cast magnesium alloy yttrium corrosion property |
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