表面划伤对690TT合金传热管腐蚀行为的影响

孟凡江, 吴斌, 吕云鹤, 明洪亮, 鲍一晨, 王俭秋, 韩恩厚

Effect of Surface Scratch on Corrosion Behavior of Alloy 690TT Heat Exchanger Tubes

MENG Fanjiang, WU Bin, LV Yunhe, MING Hongliang, BAO Yichen, WANG Jianqiu, HAN En-Hou

图6 划伤深度为30 μm、70 μm、110 μm试样腐蚀2000 h后腐蚀产物的形貌

Fig.6 Morphologies of oxide on scratched samples with the scratch depth of 30 μm, 70 μm and 110 μm after a 2000 h corrosion test (a1~a3) overview; (b1~b3) scratch groove; (c1~c3) scratch bank; (d1~d3) affected area