X80管线钢焊接接头的模拟重构及电偶腐蚀行为表征
|
|
李亚东,李强,唐晓,李焰
|
Reconstruction and Characterization of Galvanic Corrosion Behavior of X80 Pipeline Steel Welded Joints
|
|
Yadong LI,Qiang LI,Xiao TANG,Yan LI
|
|
| 表2 由动电位极化曲线拟合的电化学参数 |
| Table 2 Electrochemical parameters fitted from potentiodynamic polarization curves |
|
Time h | Region | ba mV·dec-1 | bc mV·dec-1 | Ecorr V | icorr mA·cm-2 |
|---|
| 0.5 | BM | 72 | -181 | -0.614 | 0.2345 | | ICHAZ | 77 | -188 | -0.604 | 0.3421 | | FGHAZ | 86 | -183 | -0.609 | 0.2921 | | CGHAZ | 66 | -177 | -0.617 | 0.2913 | | WM | 64 | -174 | -0.618 | 0.2195 | | 2 | BM | 100 | -188 | -0.638 | 0.1457 | | ICHAZ | 99 | -178 | -0.626 | 0.2176 | | FGHAZ | 90 | -171 | -0.621 | 0.2261 | | CGHAZ | 91 | -172 | -0.623 | 0.2231 | | WM | 104 | -187 | -0.647 | 0.1281 | | 4 | BM | 106 | -189 | -0.640 | 0.1423 | | ICHAZ | 108 | -190 | -0.634 | 0.2107 | | FGHAZ | 101 | -187 | -0.621 | 0.1954 | | CGHAZ | 109 | -189 | -0.636 | 0.2403 | | WM | 114 | -181 | -0.656 | 0.1269 | | 6 | BM | 110 | -187 | -0.643 | 0.1404 | | ICHAZ | 117 | -183 | -0.638 | 0.2164 | | FGHAZ | 105 | -202 | -0.636 | 0.2207 | | CGHAZ | 114 | -196 | -0.642 | 0.2505 | | WM | 115 | -180 | -0.655 | 0.1117 |
|
|
|