交变压力对无溶剂环氧涂层在模拟超深海环境下的电化学行为

王腾宇, 张正贵, 陆卫中, 吴希革

Effect of Alternating Pressure on Electrochemical Behavior of Solvent-free Epoxy Coating in Simulated Ultra-deep Sea Environment

WANG Tengyu, ZHANG Zhenggui, LU Weizhong, WU Xige

表1 涂层A在0.1~30 MPa交变压力下浸泡480 h期间EIS参数拟合结果

Table 1 Fitting results of EIS parameters of epoxy powder coating during 480 h immersion at 0.1-30 MPa alternating pressure

Time / h Rc / Ω·cm2 n1 Qc / F·cm-2 Rct / Ω·cm2 n2 Qdl / F·cm-2 Zw 6 3.287×1011 0.9 2.291×10-10 --- --- --- --- 28 4.258×1010 0.9492 2.324×10-10 --- --- --- --- 41 4.43×1010 0.9477 2.37×10-10 --- --- --- --- 52 3.909×1010 0.9441 2.486×10-10 --- --- --- --- 75 2.556×1010 0.9 2.914×10-10 --- --- --- --- 144 1.896×1010 0.9365 2.739×10-10 --- --- --- --- 240 1.138×109 0.954 2.943×10-10 1.386×1010 0.9676 3.81×10-10 --- 360 1.49×108 0.3122 3.954×10-10 3.07×109 0.3122 3.125×10-9 --- 480 4.447×107 0.8951 5.105×10-10 1.835×108 0.4922 6.488×10-9 ---