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.
YE Hong,WANG Bin,LONG Gang,DENG Dai-yu.Preparation and Properties of Al Alloying on AZ31 Magnesium Alloy[J].Surface Technology,2010,39(1):20-22 |
| AZ31镁合金表面Al合金化层的制备与性能研究 |
| Preparation and Properties of Al Alloying on AZ31 Magnesium Alloy |
| 投稿时间：2009-09-02 修订日期：2010-02-10 |
| DOI： |
| 中文关键词: 镁合金 脉冲钨极氩弧 Al合金化 性能 |
| 英文关键词:Magnesium alloy Pulse current gas tungsten arc Al alloying Properties |
| 基金项目:重庆市科委应用基础项目(2008BB4330) |
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| 中文摘要: |
| 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。 |
| 英文摘要: |
| 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 Mg2Al3, Mg17Al12,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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