【摘要】 通过添加适量的GaI、n、Sn、Bi、Pb和Mn等合金元素,制备了活性优良的铝合金阳极;采用极化曲线测试结合扫描电子显微镜分析技术,研究了退火对铝合金阳极的活性的影响。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,活性随退火温度提高而降低;退火温度高于400℃后,铝阳极析出大量固溶体,成为导致活性变化的主导因素,活性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阳极活性改变影响最大。铝合金阳极的退火最佳温度为550℃。更多还原

【Abstract】 Al alloy anode with more activity was prepared by appending quantitative Ga, In, Sn, Bi, Pb and Mn.The effects of annealing on the activity of Al alloy anode were studied by measurement of polarization curves and analysis of SEM. The results showed that the decrease of the crystal defects was dominant for the activity when the annealing temperature was lower than 400 ℃, and with the increase of the annealing temperature, the activity were decreased. The solution of segregative phase was dominant for the activity when the annealing temperature was higher than 400 ℃ and with the increase of the annealing temperature, the activity was improved. For the whole process of annealing, the leading factor for the change of activity of the Al alloy anode was the change of crystal defects. The optimum annealing temperature of Al alloy anode was 550 ℃.更多还原