海底管道<strong>CO<sub>2</sub></strong> 腐蚀特性及预测模型研究进展

海底管道CO₂ 腐蚀特性及预测模型研究进展

朱烨森, 蔡锟, 胡葆文, 夏云秋, 胡涛勇, 黄一

Research Progress on Characteristics and Prediction Models of Carbon Dioxide Induced Corrosion for Submarine Pipelines

ZHU Yesen, CAI Kun, HU Baowen, XIA Yunqiu, HU Taoyong, HUANG Yi

表1 交换电流密度计算参数^[32,109]

Table 1 Exchange current density calculation parameters^[32,109]

Process

$I_{0, r e f}$

A·m^-2

C_{r e f, H^{+}}

mol·L^-1

$C_{r e f, H_{2} C O_{3}}$

mol·L^-1

$Δ H$

kJ·mol^-1

$T_{r e f}$

$b$

E_rev

Fe oxidation

37.5

293.15

2.3RT/1.5F

-0.488

H⁺ reduction

0.02

0.0001

293.15

2.3RT/0.5F

-0.24

H₂CO₃ reduction

0.014

0.0001

293.15

2.3RT/0.5F

-0.24