pH值对X100管线钢在CO32-/HCO3-溶液中的电化学与应力腐蚀行为的影响

pH值对X100管线钢在CO₃^2-/HCO₃^-溶液中的电化学与应力腐蚀行为的影响

李柯萱, 宋龙飞, 李晓荣

Effect of pH on Electrochemical Corrosion and Stress Corrosion Behavior of X100 Pipeline Steel in CO₃^2-/HCO₃^- Solutions

LI Kexuan, SONG Longfei, LI Xiaorong

表1 NaHCO₃/Na₂CO₃缓冲液的配比与pH值

Table 1 Proportions and pH values of four NaHCO₃/Na₂CO₃ test solutions

Proportion	NaHCO₃	Na₂CO₃	pH
1 mol/L	0.15	0	8.55
2 mol/L	0.1	0.05	9.62
3 mol/L	0.05	0.1	10.53
4 mol/L	0	0.15	11.58