轧制对Mg-Al-Pb-La镁合金腐蚀电化学行为的影响
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摘要
采用熔炼铸造和塑性变形方法制备Mg-Al-Pb-La镁合金。采用扫描电镜和X射线衍射等方法研究轧制对Mg-Al-Pb-La镁合金显微组织的影响,采用动电位极化和恒电流放电等方法研究轧制对Mg-Al-Pb-La镁合金腐蚀电化学行为的影响。结果表明:轧制使Mg-Al-Pb-La镁合金的晶粒细化、第二相破碎、再结晶程度降低、Mg-Al-Pb-La镁合金的放电活性增强、耐蚀性变差和阳极效率降低;当轧制变形量为40%时,镁合金的综合放电性能优良,在电流密度180 m A/cm~2下平均放电电位和阳极效率分别为-1.749 V(vs SCE)和(82.9±0.2)%。
The Mg-Al-Pb-La alloy was prepared by melting and casting as well as plastic deformation.The effect of rolling on microstructure of Mg-Al-Pb-La alloy was investigated by scanning electron microscopy,X-ray diffractometry and electron backscatter diffractometry.The effect of rolling on electrochemical corrosion behavior was studied by potentiodynamic polarization and galvanostatic measurements.The results show that the discharge activity of the rolled Mg-Al-Pb-La alloys is enhanced.It is related with the refined grains,fractured and homogeneously distributed second phases,and the lowered recrystallization degree of Mg-Al-Pb-La alloy after hot rolling.The Mg-Al-Pb-La alloy with critical rolling deformation of 40% exhibits good discharge performance with strong discharge activity(-1.749 V(vs SCE)) and a relatively high anodic efficiency of(82.9±0.2)%,while the alloy under rolling deformation of 60% exhibits the worst corrosion resistance whose corrosion current density is(49.8±1.3) μA/cm~2.
The Mg-Al-Pb-La alloy was prepared by melting and casting as well as plastic deformation.The effect of rolling on microstructure of Mg-Al-Pb-La alloy was investigated by scanning electron microscopy,X-ray diffractometry and electron backscatter diffractometry.The effect of rolling on electrochemical corrosion behavior was studied by potentiodynamic polarization and galvanostatic measurements.The results show that the discharge activity of the rolled Mg-Al-Pb-La alloys is enhanced.It is related with the refined grains,fractured and homogeneously distributed second phases,and the lowered recrystallization degree of Mg-Al-Pb-La alloy after hot rolling.The Mg-Al-Pb-La alloy with critical rolling deformation of 40% exhibits good discharge performance with strong discharge activity(-1.749 V(vs SCE)) and a relatively high anodic efficiency of(82.9±0.2)%,while the alloy under rolling deformation of 60% exhibits the worst corrosion resistance whose corrosion current density is(49.8±1.3) μA/cm~2.
引文
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[7]WANG Nai-guang,WANG Ri-chu,PENG Chao-qun,FENG Yan.Enhancement of the discharge performance of AP65 magnesium alloy anodes by hot extrusion[J].Corrosion Science,2014,81(4):85-95.
[8]WEN Li,YU Kun,XIONG Han-qing,DAI Yi-long,YANG Shi-hai,QIAO Xue-yan,TENG Fei,FAN Su-feng.Composition optimization and electrochemical properties of Mg-Al-Pb-(Zn)alloys as anodes for seawater activated battery[J].Electrochimica Acta,2016,194:40-51.
[9]ARGADE G R,PANIGRAHI S K,MISHRA R S.Effects of grain size on the corrosion resistance of wrought magnesium alloys containing neodymium[J].Corrosion Science,2012,58(5):145-151.
[10]CAO Dian-xue,WU Lin,SUN Yong,WANG Gui-ling,LV Yan-zhuo.Electrochemical behavior of Mg-Li,Mg-Li-Al and Mg-Li-Al-Ce in sodium chloride solution[J].Journal of Power Sources,2008,177(2):624-630.
[11]胡程旺,王日初,彭超群,冯艳,王乃光.Ce添加对AP65镁合金显微组织及电化学性能的影响[J].中国有色金属学报,2015,25(7):1756-1763.HU Cheng-wang,WANG Ri-chu,PENG Chao-qun,FENG Yan,WANG Nai-guang.Effect of Ce addition on microstructure and electrochemical performance of AP65 magnesium alloy[J].The Chinese Journal of Nonferrous Metals,2015,25(7):1756-1763.
[12]WANG Nai-guang,WANG Ri-chu,XIONG Wen-hui,ZHANG Jun-chang,FENG Yan.Electrochemical discharge performance of Mg-Al-Pb-Ce-Y alloy as anode for Mg-air battery[J].Journal of Materials Chemistry A,2016,22(4):8658-8668.
[13]冯艳,刘莉,殷立勇,王日初,李晓庚.稀土元素La对Mg-6Al-5Pb镁合金组织和腐蚀电化学行为的影响[J].中国有色金属学报,2015,25(10):2623-2631.FENG Yan,LIU Li,YIN Li-yong,WANG Ri-chu,LI Xiao-geng.Effect of lanthanum on microstructure and electrochemical corrosion behavior of Mg-6Al-5Pb alloy[J].The Chinese Journal of Nonferrous Metals,2015,25(10):2623-2631.
[14]SHI Yin-chun,FENG Yan,WANG Ri-chu,WANG Nai-guang.Enhancement of discharge properties of an extruded Mg-Al-Pb anode for seawater-activated battery by lanthanum addition[J].Journal of Alloys and Compounds,2017,721:392-404.
[15]SHI Yin-chun,FENG Yan,WANG Ri-chu,WANG Nai-guang.Microstructure and electrochemical corrosion behavior of extruded Mg-Al-Pb-La alloy as anode for seawater-activated battery[J].Materials&Design,2017,124:24-33.
[16]SONG Guang-ling,MISHRA Raja,XU Zhen-qing.Crystallographic orientation and electrochemical activity of AZ31 Mg alloy[J].Electrochemistry Communications,2010,12(8):1009-1012.
[17]WANG Nai-guang,WANG Ri-chu,PENG Chao-qun,FENG Yan,CHEN Bin.Effect of hot rolling and subsequent annealing on electrochemical discharge behavior of AP65 magnesium alloy as anode for seawater activated battery[J].Corrosion Science,2012,64(6):17-27.
[18]WANG Nai-guang,WANG Ri-chu,PENG Chao-qun,FENG Yan,ZHANG Xiang-yu.Influence of aluminium and lead on activation of magnesium as anode[J].The Chinese Journal of Nonferrous Metals,2010,20(8):1403-1411.
[19]BEN-HAROUSH M,BEN-HAMU G,ELIEZER D,WAGNER L.The relation between microstructure and corrosion behavior of AZ80 Mg alloy following different extrusion temperatures[J].Corrosion Science,2008,50(6):1766-1778.
[20]JEONG Y S,KIM W J.Enhancement of mechanical properties and corrosion resistance of Mg-Ca alloys through microstructural refinement by indirect extrusion[J].Corrosion Science,2014,82(5):392-403.
[21]ZHAO Hong-yang,BIAN Pei,JU Dong-ying.Electrochemical performance of magnesium alloy and its application on the sea water battery[J].Journal of Environmental Sciences,2009,21(S1):s88-s91.
[2]奚碚华,夏天.鱼雷动力电池研究进展[J].鱼雷技术,2005,13(2):7-12.XI Bei-hua,XIA Tian.Survey of power battery for torpedo propulsion[J].Torpedo Technology,2005,13(2):7-12.
[3]冯艳,王日初,彭超群.海水电池用镁阳极的研究与应用[J].中国有色金属学报,2011,21(2):259-268.FENG Yan,WANG Ri-chu,PENG Chao-qun.Researches and applications of magnesium anode materials in seawater battery[J].The Chinese Journal of Nonferrous Metals,2011,21(2):259-268.
[4]HASVOLD?,RKERSEN N J,FORSETH S,LIAN T.Power sources for autonomous underwater vehicles[J].Journal of Power Sources,2006,162(2):935-942.
[5]刘莉,冯艳,王日初,彭超群,李晓庚.均匀化退火及挤压对Mg-Hg-Ga合金显微组织和耐腐蚀性能的影响[J].中国有色金属学报,2017,27(1):32-39.LIU Li,FENG Yan,WANG Ri-chu,PENG Chao-qun,LI Xiao-geng.Effect of homogenizing and extrusion on microstructure and corrosion resistance of Mg-Hg-Ga alloy[J].The Chinese Journal of Nonferrous Metals,2017,27(1):32-39.
[6]邓敏,王日初,冯艳,王乃光.稀土元素La对Mg-Hg-Ga阳极材料组织与腐蚀电化学性能的影响[J].中国有色金属学报,2015,25(10):2760-2769.DENG Min,WANG Ri-chu,FENG Yan,WANG Nai-guang.Effect of La on microstructure and corrosion electrochemical performance of Mg-Hg-Ga anodes[J].The Chinese Journal of Nonferrous Metals,2015,25(10):2760-2769.
[7]WANG Nai-guang,WANG Ri-chu,PENG Chao-qun,FENG Yan.Enhancement of the discharge performance of AP65 magnesium alloy anodes by hot extrusion[J].Corrosion Science,2014,81(4):85-95.
[8]WEN Li,YU Kun,XIONG Han-qing,DAI Yi-long,YANG Shi-hai,QIAO Xue-yan,TENG Fei,FAN Su-feng.Composition optimization and electrochemical properties of Mg-Al-Pb-(Zn)alloys as anodes for seawater activated battery[J].Electrochimica Acta,2016,194:40-51.
[9]ARGADE G R,PANIGRAHI S K,MISHRA R S.Effects of grain size on the corrosion resistance of wrought magnesium alloys containing neodymium[J].Corrosion Science,2012,58(5):145-151.
[10]CAO Dian-xue,WU Lin,SUN Yong,WANG Gui-ling,LV Yan-zhuo.Electrochemical behavior of Mg-Li,Mg-Li-Al and Mg-Li-Al-Ce in sodium chloride solution[J].Journal of Power Sources,2008,177(2):624-630.
[11]胡程旺,王日初,彭超群,冯艳,王乃光.Ce添加对AP65镁合金显微组织及电化学性能的影响[J].中国有色金属学报,2015,25(7):1756-1763.HU Cheng-wang,WANG Ri-chu,PENG Chao-qun,FENG Yan,WANG Nai-guang.Effect of Ce addition on microstructure and electrochemical performance of AP65 magnesium alloy[J].The Chinese Journal of Nonferrous Metals,2015,25(7):1756-1763.
[12]WANG Nai-guang,WANG Ri-chu,XIONG Wen-hui,ZHANG Jun-chang,FENG Yan.Electrochemical discharge performance of Mg-Al-Pb-Ce-Y alloy as anode for Mg-air battery[J].Journal of Materials Chemistry A,2016,22(4):8658-8668.
[13]冯艳,刘莉,殷立勇,王日初,李晓庚.稀土元素La对Mg-6Al-5Pb镁合金组织和腐蚀电化学行为的影响[J].中国有色金属学报,2015,25(10):2623-2631.FENG Yan,LIU Li,YIN Li-yong,WANG Ri-chu,LI Xiao-geng.Effect of lanthanum on microstructure and electrochemical corrosion behavior of Mg-6Al-5Pb alloy[J].The Chinese Journal of Nonferrous Metals,2015,25(10):2623-2631.
[14]SHI Yin-chun,FENG Yan,WANG Ri-chu,WANG Nai-guang.Enhancement of discharge properties of an extruded Mg-Al-Pb anode for seawater-activated battery by lanthanum addition[J].Journal of Alloys and Compounds,2017,721:392-404.
[15]SHI Yin-chun,FENG Yan,WANG Ri-chu,WANG Nai-guang.Microstructure and electrochemical corrosion behavior of extruded Mg-Al-Pb-La alloy as anode for seawater-activated battery[J].Materials&Design,2017,124:24-33.
[16]SONG Guang-ling,MISHRA Raja,XU Zhen-qing.Crystallographic orientation and electrochemical activity of AZ31 Mg alloy[J].Electrochemistry Communications,2010,12(8):1009-1012.
[17]WANG Nai-guang,WANG Ri-chu,PENG Chao-qun,FENG Yan,CHEN Bin.Effect of hot rolling and subsequent annealing on electrochemical discharge behavior of AP65 magnesium alloy as anode for seawater activated battery[J].Corrosion Science,2012,64(6):17-27.
[18]WANG Nai-guang,WANG Ri-chu,PENG Chao-qun,FENG Yan,ZHANG Xiang-yu.Influence of aluminium and lead on activation of magnesium as anode[J].The Chinese Journal of Nonferrous Metals,2010,20(8):1403-1411.
[19]BEN-HAROUSH M,BEN-HAMU G,ELIEZER D,WAGNER L.The relation between microstructure and corrosion behavior of AZ80 Mg alloy following different extrusion temperatures[J].Corrosion Science,2008,50(6):1766-1778.
[20]JEONG Y S,KIM W J.Enhancement of mechanical properties and corrosion resistance of Mg-Ca alloys through microstructural refinement by indirect extrusion[J].Corrosion Science,2014,82(5):392-403.
[21]ZHAO Hong-yang,BIAN Pei,JU Dong-ying.Electrochemical performance of magnesium alloy and its application on the sea water battery[J].Journal of Environmental Sciences,2009,21(S1):s88-s91.
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