| AZ31镁合金表面Al合金化层的制备与性能研究 |
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| 引用本文： | 叶宏,王宾,龙刚,邓代玉.AZ31镁合金表面Al合金化层的制备与性能研究[J].表面技术,2010,39(1):20-22. |
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| 作者姓名： | 叶宏 王宾 龙刚 邓代玉 |
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| 作者单位： | 重庆理工大学,重庆,400050;重庆铁马工业集团有限公司,重庆,400050 |
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| 基金项目： | 重庆市科委应用基础项目(2008BB4330) |
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| 摘 要： | 为提高镁合金表面的耐蚀性,采用热喷涂技术在AZ31镁合金表面制备铝涂层,并利用脉冲钨极氩弧表面熔覆的方法进行表面重熔,获得富铝的合金化层,分析了合金化层的组织结构和性能。研究结果表明:在AZ31镁合金表面的铝合金化层中存在典型的树枝晶结构,含有金属间化合物Mg2Al3,Mg17Al12以及α-Mg和Al固溶体。显微硬度测试表明,铝合金化可使AZ31镁合金表面硬度由HV50左右提高到HV200左右。极化曲线测试表明,合金化层提高了镁合金表面的耐蚀性。
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| 关 键 词： | 镁合金 脉冲钨极氩弧 Al合金化 性能 |
| 收稿时间： | 9/2/2009 12:00:00 AM |
| 修稿时间： | 2010/2/10 0:00:00 |
Preparation and Properties of Al Alloying on AZ31 Magnesium Alloy |
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| YE Hong,WANG Bin,LONG Gang and DENG Dai-yu.Preparation and Properties of Al Alloying on AZ31 Magnesium Alloy[J].Surface Technology,2010,39(1):20-22. |
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| Authors: | YE Hong WANG Bin LONG Gang and DENG Dai-yu |
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| Affiliation: | 1.Chongqing University of Technology;Chongqing 400050;China;2.Chongqing Tiema Industries Corporation;China |
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| Abstract: | In order to improve surface properties of magnesium alloy, Al coating on the AZ31 magnesium alloy was prepared by the thermal spraying, and the Al-rich layer was obtained by pulse current gas tungsten arc melting. The microstructure and properties of the alloying layer were analyzed. The results show that the alloying layer has a typical dendritic structure, the alloying layer consistes of phases of Mg_2Al_3, Mg_(17)Al_(12), α-Mg and Al. The microhardness is increased from about HV50 to about HV200. The potentiodynamic polarization results confirmed that the corrosion resistance is enhanced. |
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| Keywords: | Magnesium alloy Pulse current gas tungsten arc Al alloying Properties |
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