采用真空电弧熔炼的方法制备了Al-ZrNd合金.经500℃充分退火后,采用X射线衍射、电化学测试和金相显微分析等方法对合金的相组成及其在3.5％ NaCl溶液中腐蚀行为进行了研究.结果表明,主相为铝固溶体的合金发生明显的钝化现象,与纯铝相似,但钝化区更短,腐蚀从点蚀开始并向基体铝扩展,出现选择性腐蚀;其余合金不发生点蚀,表现为活性阳极溶解过程,腐蚀从缺陷和晶界处开始并扩展至易腐蚀相,导致易腐蚀相的选择性腐蚀,其中铝固溶相由于电位最负而最先腐蚀,其次是铝和钕组成的二元相,最后是铝和锆组成的二元相.
参考文献
| [1] | Nada JAUKOVIC;Milisav LALOVIC .Effect of zirconium and lanthanides on the recovery in 2618 base aluminum alloys[J].ISIJ International,2005(3):405-407. |
| [2] | 杨军军,聂祚仁,付静波,左铁镛.稀土在铝合金中的作用及研究进展[J].北京工业大学学报,2002(04):500-505. |
| [3] | 秦家银.Influence of Rare Earth Element on Short Fatigue Crack Threshold for Al-Li Alloy 2090[J].JOURNAL OF RARE EARTHS,1994(04):268. |
| [4] | 范常有,张雷,赵茂密,陈红梅,文衍宣,欧阳义芳.Al-Zr-M（M=Fe,Ce和Nd）合金在Nacl溶液中的腐蚀行为研究[J].中国腐蚀与防护学报,2010(06):437-441. |
| [5] | Chunliu Li;Jia She;Mingjun Pang .Phase Equilibria in the Al-Zr-Nd System at 773 K[J].Journal of Phase Equilibria and Diffusion,2011(1):24-29. |
| [6] | 陈红梅,范常有,李智奇,文衍宣.Al1-xFex在3.5％ NaCl溶液中腐蚀行为影响的研究[J].广西大学学报（自然科学版）,2011(05):842-845,855. |
| [7] | Jing Hu;Yongzhong Zhan;Mingjun Pang .Experimental Phase Diagram of the Al-Er-Zr Ternary System[J].Journal of Phase Equilibria and Diffusion,2011(5):412-417. |
| [8] | Jia She;Yongzhong Zhan;Zhaohua Hu;Chunliu Li;Jing Hu;Yong Du;Honghui Xu .Experimental study of Al--Zr-Y system phase equilibria at 773 K[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2010(1/2):118-120. |
| [9] | Dan Peng;Yongzhong Zhan;Jia She;Mingjun Pang;Yong Du .Phase equilibria in the ternary Al–Zr–La system[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2010(1):62-66. |
| [10] | Jia She;Yongzhong Zhan;Chunliu Li;Yong Du;Honghui Xu;Yuehui He .Phase equilibria of the Al–Pr–Zr ternary system at 773K[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2010(1):57-60. |
| [11] | R.A. Mesquita;D.R. Leiva;A.R. Yavari;W.J. Botta Filho .Microstructures and mechanical properties of bulk AlFeNd(Cu,Si) alloys obtained through centrifugal force casting[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2007(1/2):161-169. |
| [12] | N. Birbilis;R. G. Bucbbeit .Electrochemical Characteristics of Intermetallic Phases in Aluminum Alloys[J].Journal of the Electrochemical Society,2005(4):B140-B151. |
| [13] | S.C. Ferreira;LA. Rocha;E. Ariza;P.D. Sequeira;Yoshimi Watanabe;J.C.S. Fernandes .Corrosion behaviour of Al/Al_3Ti and Al/Al_3Zr functionally graded materials produced by centrifugal solid-particle method: Influence of the intermetallics volume fraction[J].Corrosion Science: The Journal on Environmental Degradation of Materials and its Control,2011(6):2058-2065. |
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