有色金属科学与工程2025，Vol.16Issue(6)：914-921,8.DOI:10.13264/j.cnki.ysjskx.2025.06.009
6063铝合金在模拟湿热大气环境下的腐蚀行为
Corrosion behavior of 6063 aluminum alloys in simulated hot and humid atmospheric environment
摘要
Abstract
Indoor hygrothermal corrosion tests simulated the corrosion behavior of 6063 aluminum alloy in a hygrothermal atmosphere.The corrosion morphology,pitting parameters and surface corrosion products of 6063 aluminum alloy were analyzed by extended depth of field microscopy(EDFM)and X-ray diffractometer(XRD).The evolution of 6063 aluminum alloy's corrosion behavior was studied through corrosion kinetics and electrochemical experiments.It is shown that pitting is the main corrosion form of 6063 aluminum alloy in a simulated hot and humid atmospheric environment.With the extension of corrosion time,the corrosion pits'depth and width values gradually increase.The pit's maximum depth and width values could reach 15.75 μm and 101.30 μm,respectively,when the corrosion time is extended to 1 000 h.It can be seen that the corrosion products are mainly composed of Al2O3,Al(OH)3 and Al2O3·H2O.Moreover,the corrosion weight loss of 6063 aluminum alloy follows a power-law relationship with the corrosion time in a simulated hot and humid atmosphere.The corrosion rate decreases as the corrosion time increases.Analysis of electrochemical impedance and polarization curves indicates the corrosion product layer provides a specific protective effect.In addition,the tensile and yield strength of 6063 aluminum alloy decreased by 7.74%and 8.88%respectively after 1 000 hours of hygrothermal corrosion.关键词
6063铝合金/湿热环境/大气腐蚀/点蚀/强度Key words
6063 aluminum alloy/hot and humid atmospheric environment/atmospheric corrosion/pitting corrosion/strength分类
矿业与冶金引用本文复制引用
WU Yaping,MI Chunxu,WANG Weina,WANG Qian..6063铝合金在模拟湿热大气环境下的腐蚀行为[J].有色金属科学与工程,2025,16(6):914-921,8.基金项目
山东中实易通集团有限公司科技资助项目(CGYF23-02) （CGYF23-02）
