摘要
研究了交换性酸度总量、交换性H+ 、交换性铝对A3钢在酸性土壤中的腐蚀影响 .结果表明 :深圳土作为酸性土 ,它的缓冲性能很强 ,加不同 pH的硝酸 ,对其 pH值影响不大 ;随硝酸的pH的增加 ,交换性铝、交换性酸度总量、交换性H+ 有相对减小的趋势 ,腐蚀速率增大 .当土壤pH约为 4时 ,阴极过程发生变化 ,由氧放电转为氢放电 .
Effect of exchangable total acidity,H + and aluminum in acidic soil on corrosion of A3 steel is studied.The results show that acidic soil at Shenzhen area shows a buffering performance to a certain extent and the addition of acid to the soil has little influence on its pH value.What's more,with increasing of pH of the acid,the content of exchangable total acidity,H + and aluminum decreases,at the same time corrosion rate increases.When the pH value of soil is 4,the reaction process of the cathode from oxygen discharging,transforms in to hydrogen discharging.
出处
《腐蚀科学与防护技术》
CAS
CSCD
北大核心
2002年第6期343-345,共3页
Corrosion Science and Protection Technology
