【作者】 沈汉杰； 李栋梁； 张雅琴； 郭孟威； 雍兴跃；

【Author】 Shenhanjie Li Dongliang Zhang Yaqin Guo Mengwei Yong Xingyue (Beijing University of Chemical Technology,Beijing,100029)

【机构】 北京化工大学；

【摘要】 本文采用纳米压人方法,研究了空化作用下电化学极化引起的不锈钢表层力学性质变化与腐蚀。结果发现,与自腐蚀电位下相比,在阴极极化作用下,腐蚀受到抑制,不锈钢表层力学性质(H/E)随着极化电位升高而增大,空泡腐蚀失重显著减小。在阳极极化条件下,电极表面处于钝化或过钝化状态,由此当电极处于钝化区时表层力学性质最大;随着阳极极化电位升高,进入过钝化区域,表层力学性质相对降低。然而,空泡腐蚀失重却随着阳极极化电位升高而增大。更多还原

【Abstract】 The nano-indentation technology was used to measure the surface layer mechanical properties of stainless steel after corrosion under cavitation and the relation of surface layer mechanical properties with cavitation corrosion was studied.It was found that their mechanisms were different although surface layer mechanical properties were increased by cathodic and anodic polarizations under cavitation compared with under corrosion potential conditions.更多还原