采用X射线衍射仪、扫描电镜、极化曲线及电化学阻抗谱研究微量Zn对AM60-2％ RE镁合金显微组织及耐腐蚀性能的影响.结果表明:合金中添加的微量Zn主要固溶于基体中,未与合金中其他元素形成中间相;但Al11RE3相数量显著增加,沿晶界呈断续状态分布.随着Zn含量的提高,合金的腐蚀电流密度显著降低,电荷转移电阻增加,腐蚀产物的致密性提高,合金耐蚀性能得到明显地改善.添加0.8％Zn的合金的腐蚀速率为0.405mg· cm-2·d-l,降低至Zn含量为0.2％时的36％.
参考文献
| [1] | Mustafa Kemal Kulekci.Magnesium and its alloys applications in automotive industry[J].The International Journal of Advanced Manufacturing Technology,20089/10(9/10):851-865. |
| [2] | 赵长喜.镁合金在航天器上的应用分析与实践[J].航天器环境工程,2012(03):259-262. |
| [3] | 曾荣昌;柯伟;徐永波;韩恩厚;朱自勇.Mg合金的最新发展及应用前景[J].金属学报,2001(7):673-685. |
| [4] | R. Arrabal;A. Pardo;M.C. Merino;M. Mohedano;P. Casajus;K. Paucar;G. Garces.Effect of Nd on the corrosion behaviour of AM50 and AZ91D magnesium alloys in 3.5 wt.% NaCl solution[J].Corrosion Science: The Journal on Environmental Degradation of Materials and its Control,2012Feb.(Feb.):301-312. |
| [5] | F. ROSALBINO;E. ANGELINI;S. DE NEGRI.Effect of erbium addition on the corrosion behaviour of Mg-Al alloys[J].Intermetallics,20051(1):55-60. |
| [6] | 蒋德平;姚宗湘.锌及热处理对AM镁合金组织及力学性能的影响[J].重庆科技学院学报（自然科学版）,2011(1):127-130. |
| [7] | WANG Feng;LIU Zheng;CHEN Li-jia;YU Bao-yi;LIN Li.Mechanical properties and microstructures of hot extruded AE42 alloy with addition of zinc[J].中国有色金属学会会刊（英文版）,2006(z3):1762-1765. |
| [8] | Guang-Ling Song;ZhenQing Xu.The surface, microstructure and corrosion of magnesium alloy AZ31 sheet[J].Electrochimica Acta,201013(13):4148-4161. |
| [9] | 肖代红;黄伯云.铒对AZ91镁合金铸态组织与力学性能的影响[J].中国稀土学报,2008(1):78-81. |
| [10] | 吴裕;潘复生;蒋斌;肖璐.Zn对Mg-6Al合金凝固的溶质偏析及组织的影响[J].材料工程,2011(4):71-74. |
| [11] | 周桂斌;刘子利;刘希琴;朱晓春;李健.Mn对Mg-5Al镁合金腐蚀性能的影响[J].材料工程,2012(11):12-17,22. |
| [12] | Yingwei Song;Dayong Shan;Rongshi Chen;En-Hou Han.Corrosion characterization of Mg-8Li alloy in NaCl solution[J].Corrosion Science: The Journal on Environmental Degradation of Materials and its Control,20095(5):1087-1094. |
| [13] | 贺俊光;文九巴;李旭东;郝庆国.Al-Zn-Sn-Ga阳极腐蚀过程的电化学阻抗谱[J].中国有色金属学报,2012(1):187-193. |
| [14] | 黄亮 .铝和稀土元素对镁合金在NaCl溶液中腐蚀行为的影响[D].中国科学院上海冶金研究所,2001. |
| [15] | N.D. Nam;J.G.Kin;K.S. Shin;H.C. Jung.The effect of rare earth additions on the electrochemical properties of Mg-5Al-based alloys[J].Scripta materialia,20106(6):625-628. |
| [16] | 王勇;周红;乔丽英;宋长江.Ca含量对ZM61组织及模拟体液中腐蚀行为的影响[J].材料工程,2013(6):87-91,98. |
| [17] | I. POPOV;D. STAROSVETSKY;D. SHECHTMAN.Initial stages of corrosion within Mg-Zn-Y-Zr alloy in 1 g/l NaCl solution[J].Journal of Materials Science,20001(1):1-8. |
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