HCO3-对X90管线钢应力腐蚀行为的影响

宫克, 吴明, 张胜

Effect of HCO3- on Stress Corrosion Cracking Behavior of X90 Pipeline Steel

GONG Ke, WU Ming, ZHANG Sheng

表1 浓度为1%、3%和5%HCO3-的沈阳土壤模拟溶液中X90管线钢的电化学阻抗曲线拟合参数

Table 1 AC impedance curve fitting parameters of X90 pipeline steel in shenyang soil simulation solution with concentrations of 1%, 3% and 5%HCO3-

ѡ (HCO3-) / % Rs / Ω·cm2 Rct / Ω·cm2 W / S·s5·cm-2 1 3.32 8602 2.17×10-4 3 3.76 7211 2.58×10-4 5 6.41 4472 4.12×10-4