摘要
通过添加适量的Ga,In,Sn,Bi,Pb,Mn等合金元素制备了活化性能优良的七元铝合金阳极;采用极化曲线测试并结合扫描电子显微镜分析技术,研究了均匀化退火对铝阳极活化性能的影响。结果表明:退火温度低于400℃时,晶体缺陷的大量减少是导致铝阳极活性变化的主导因素,铝阳极活性随退火温度提高而降低;退火温度高于400℃后,析出相大量固溶成为导致铝阳极活性变化的主导因素,铝阳极活化性能随退火温度提高而增强。整个退火过程中,晶体缺陷的变化对铝合金阳极活性改变影响最大。
High-performance aluminum alloy anode containing Al,Ga,In,Sn,Bi,Pb and Mn was prepared. Effects of homogenizing annealing on activation properties of aluminum alloy anodes were studied by measurement of polarization curves and analysis of SEM. The results show that the decrease of the crystal defects is dominant for the Al-alloy-anode＇s activation properties when the annealing temperature is lower than 400℃, and with the increase of the annealing temperature the Al-alloy-anode＇s activation properties decrease. The solution of segregative phase is dominant for the Al-alloy-anode＇s activation properties when the temperature is higher than 400℃, and with the increase of the annealing temperature the Al-alloy-anode＇s activation properties are improved. For the whole process of homogenizing annealing, the leading factor for the change of Al-alloy-anode＇s activation properties is the change of crystal defects.
出处
《材料工程》
EI
CAS
CSCD
北大核心
2005年第10期27-30,共4页
Journal of Materials Engineering
基金
河北省科技攻关项目(401073)
关键词
铝合金阳极
活化
均匀化退火
晶体缺陷
aluminum alloy anode
activation
homogenizing annealing
crystal defect
