摘要
研究了在ＮａＣｌ溶液中，ＬＣ－４高强铝合金在模拟闭塞区内溶液的化学状态变化，即向闭塞区通入不同密度的阳极电流，测定其溶液的ｐＨ、Ｃｌ－浓度、金属阳离子的含量以及阳极区析氢量等随时间的变化．同时采用动电位极化扫描和线性极化法，测定合金在配制的不同阶段闭塞区溶液中的腐蚀速率．确定出相应条件的闭塞区临界ｐＨ值，其值约为３．８．
The simulated occluded cell was used to study the chemical changes or solution in the cracks of different stages in NaCl solution for LC-4 alloy, i. e. the changes of composition and pH value. Also the polarization scanning was conducted and the corrosion rates of LC-4 alloy in the self-made simulated solution of different stages of O. C. was measured by linear polarization method and the critical pH value about 3.8 was determined.
基金
国家自然科学基金
关键词
LC-4
铝合金
闭塞电池
氯化钠
腐蚀
LC-4 alloy
simulated occluded cell
critical pH
NaCl solution
