刘伟,刘丽,宋贺,熊珊,杜伟,赵相金.剪切带修复对Pd基块体非晶合金腐蚀性能的影响[J].稀有金属材料与工程,2017,46(10):3053~3057.[LiuWei,Liu Li,Song He,Xiong Shan,Du Wei,Zhao Xiangjin.Self-healing Effect on the Corrosion Resistance of the Pd-based Amorphous Alloys[J].Rare Metal Materials and Engineering,2017,46(10):3053~3057.]
剪切带修复对Pd基块体非晶合金腐蚀性能的影响
投稿时间:2015-06-24  修订日期:2015-08-23
中文关键词:  Pd基块体非晶合金  自修复  电化学测试  腐蚀行为
基金项目:国家自然科学基金资助(项目号51101133和51101134),山东省优秀中青年科学家科研奖励基金(项目号BS2012CL036),山东省自然科学基金(项目号ZR2011EL025)
中文摘要:
      摘 要:本文以Pd79Cu4Au2Si10P5块体非晶合金为研究对象,采用电化学极化曲线和电化学阻抗测试方法研究了剪切带自修复对其在3 wt.% NaCl溶液和1 mol/L HCl溶液中耐蚀性能的影响。通过研究极化曲线中的自腐蚀电位和自腐蚀电流密度得知,修复后样品耐腐蚀性能优于修复前样品,但仍低于原始样品(即未变形样品)。电化学阻抗研究结果显示,在开路电位下阻抗图均有单一容抗弧构成,修复后样品的电化学转移电阻Rt小于原始样品的、但大于修复前样品的,这进一步表明修复提高了材料的耐腐蚀性能,但仍未达到原始样品的耐蚀性。扫描电镜研究发现,合金表面发生明显的点蚀,其中原始样品的点蚀坑密度最少,修复后样品的次之,修复前样品的最多。
Self-healing Effect on the Corrosion Resistance of the Pd-based Amorphous Alloys
英文关键词:Pd-based bulk metallic glass  self-repaired  electrochemical experiments  corrosion behaviors
英文摘要:
      Abstract:The self-healing effect on corrosion behaviors of Pd79Cu4Au2Si10P5 amorphous alloy in 3 wt.% NaCl and 1 mol/L HCl solutions was studied by potentiodynamic polarization experiments and electrochemical impedance spectroscopy (EIS). The results of potentiodynamic polarization experiments show that the self-healing sample has better corrosion resistance than the unrepaired sample, but the as-cast sample has the best corrosion resistance. EIS results show that the Nyquist figures of all the studied samples are composed of one single semi-circle in the state of open circuit potential. The repaired sample has a higher charge transfer reaction resistance than the unrepaired sample, and the as-cast sample has the highest charge transfer reaction resistance. This result is accord with that of potentiodynamic polarization. Surface analysis by SEM shows that all the samples are eroded by pitting corrosion. The pitting density on the surface of the as-cast sample is the least, and that of the un-healing sample is the most.
作者单位E-mail
刘伟 烟台大学 lw418181108@126.com 
刘丽 烟台大学  
宋贺 烟台大学  
熊珊 烟台大学  
杜伟 烟台大学  
赵相金 烟台大学 zl2915@ytu.edu.cn 
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