摘要
采用电化学和STM方法研究了氢对 3 1 0不锈钢阳极极化过程、钝化膜形成过程和表面形貌特征以及膜耐点蚀性能的影响 ,并进行了相应的理论分析。研究表明 :氢会降低不锈钢的自腐蚀电位 ,缩短钝化区域并使其向低电位方向偏移 ;降低反应电阻 ,增大钝化电流密度 ;降低膜在纳米尺度上的结晶度和耐点蚀性能。
The effects of hydrogen on anodic process, film formation surface character and pitting-resistance of passive film on type 310 stainless steel were theoretically analyzed and experimentally studied by use of electrochemical and STM methods. The results showed that hydrogen can decrease the inner energy of the stainless steel and its corrosion potential, narrow the passivation region and increase its anodic dissolution; decrease the reactive resistance, enhance the passive current density; reduce crystallinity of the film in nanometer scale and the pitting resistance. These influences were more noticable when increasing the pre-charged hydrogen content in the steel. [WT9.,12.HZ]
出处
《中国腐蚀与防护学报》
CAS
CSCD
1999年第4期233-238,共6页
Journal of Chinese Society For Corrosion and Protection
基金
国家自然科学基金
厦门大学表面物理化学国家重点实验室开放课题资助
关键词
氢
阳极极化
钝化膜
点蚀
Hydrogen, Anodic polarization, Passive film, Pitting
