摘要
以Al-Zn-Sn-Ga-Bi铸态、退火态、轧制态和再结晶态阳极合金为对象,研究再结晶退火对合金电化学性能的影响。通过测试不同状态下的阳极材料在4 mol/L NaOH溶液中的电化学性能,初步探讨冷变形和再结晶过程对铝阳极自腐蚀速率、析氢速率、开路电位的影响,结果发现:80%变形量的再结晶退火能够较大幅度地提高合金的电化学性能。借助金相分析技术和极化曲线分析了铝阳极材料的微观组织结构及其对铝阳极腐蚀溶解机理的影响。
The electrochemical properties of Al-Zn-Sn-Ga-Bi alloy anode as-cast,as-annealed,as-rolling-deformed and as-recrystallized were researched.Through the electrochemical tests of those anode materials in 4 mol/L NaOH solution,the effects of cold deformation and recrystallization on corrosion rate,hydrogen evolution rate and open circuit potential were analyzed.The results show that electrochemical properties of the alloy greatly increase via 80% deformation and recrystallization annealing.Microstructure was characterized by metallographic microscope,and the effect of its impact on corrosion mechanism was also discussed by polarization electrochemical method.
出处
《热加工工艺》
CSCD
北大核心
2010年第10期153-155,159,共4页
Hot Working Technology
基金
河南省科技创新杰出人才计划资助项目(094200510019)
河南省自然科学基金资助项目(092300410132)
关键词
铝合金阳极
冷变形
再结晶退火
电化学性能
金相组织
Al alloy anode
cold deformation
recrystallization annealing
electrochemical properties
microstructure
