轧制及退火对Al-0.5Mg-0.08Sn-0.1Ga-0.1In合金电化学性能的影响  

Influence of rolling and annealing on electrochemical performance of Al-0.5Mg-0.08Sn-0.1Ga-0.1In alloy

作　　者：李志强 安士忠 吴坷亭 赵金龙 陈驰 王博[1] LI Zhi-qiang;AN Shi-zhong;WU Ke-ting;ZHAO Jin-long;CHEN Chi;WANG Bo(School of Materials Science and Engineering,Henan University of Science and Technology,Luoyang 471023,China;Longmen Laboratory,Luoyang 471000,China;Provincial and Ministerial Co-construction of Collaborative Innovation Center for Non-ferrous Metal New Materials and Advanced Processing Technology,Luoyang 471023,China;Henan Key Laboratory of Nonferrous Materials Science and Processing Technology,Luoyang 471023,China)

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471023 [2]龙门实验室,河南洛阳471000 [3]省部共建有色金属新材料与先进加工技术协同创新中心,河南洛阳471023 [4]河南省有色金属材料科学与加工技术重点实验室,河南洛阳471023

出　　处：《材料热处理学报》2025年第2期88-96,共9页Transactions of Materials and Heat Treatment

基　　金：河南省高等学校重点科研项目(18A430013)。

摘　　要：铝合金阳极材料的电化学性能强烈依赖于其晶粒尺寸和析出相等微观组织。通过轧制变形和退火热处理来控制Al-0.5Mg-0.08Sn-0.1Ga-0.1In铝合金的微观组织,研究了轧制和退火对其电化学性能的影响。结果表明:轧制后合金的晶粒被拉长,第二相细化;退火后合金发生再结晶,随着退火温度的升高,晶粒尺寸逐渐增大,且第二相重新聚集长大。轧制态样品的自腐蚀速率比铸态样品降低了36%,经再结晶退火后,随着退火温度的升高,自腐蚀速率逐渐增加。极化曲线和电化学阻抗谱与自腐蚀实验结果一致。轧制态合金相对其他合金显示出更好的放电性能和耐腐蚀性,在100 mA·cm^(-2)电流密度下放电,能量密度达2576 mWh·g^(-1),阳极利用效率高达95.28%。The electrochemical performance of aluminum alloy anode materials strongly depends on their microstructure such as grain size and precipitate phase.Microstructure of Al-0.5Mg-0.08Sn-0.1Ga-0.1In aluminum alloy was controlled by rolling deformation and annealing heat treatment,and the effects of rolling and annealing on its electrochemical properties were studied.The results show that the grains of the alloy are elongated and the second phase is refined after rolling.After annealing,the alloy undergoes recrystallization,and as the annealing temperature increases,the grain size gradually increases,and the second phase re aggregates and grows.The self corrosion rate of the rolled sample decreases by 36% compared to the as cast sample.After recrystallization annealing,the self corrosion rate gradually increases with the increase of annealing temperature.The polarization curve and electrochemical impedance spectroscopy results are consistent with the results of the self corrosion test.The rolled alloy exhibits better discharge performance and corrosion resistance compared to other alloys.When discharged at a current density of 100 mA·cm^(-2),the energy density reaches 2576 mWh·g^(-1),and the anode utilization efficiency is as high as 95.28%.

关 键 词：铝空气电池 轧制 退火 微观结构 电化学性能 

分 类 号：TG146.2[一般工业技术—材料科学与工程]