换流站阀冷系统中丙二醇防冻液的腐蚀特性研究

黄赵鑫, 朱志平, 周攀, 江源康, 贺明鹏, 王正刚

Corrosion Characteristics of Propylene Glycol Antifreeze in Valve Cooling System of Converter Station

HUANG Zhaoxin, ZHU Zhiping, ZHOU Pan, JIANG Yuankang, HE Mingpeng, WANG Zhenggang

表2 6063铝合金在乙二醇和丙二醇溶液中的EIS拟合结果

Table 2 Fitting parameters of EIS of 6063 Al-based alloy in inethylene glycol and propylene glycol solutions

Solution Time / d R1 / Ω·cm2 Q1 / F·cm-2 R2 / kΩ·cm2 Q2 / F·cm-2 R3 / kΩ·cm2 Rp / kΩ·cm2 Ethylene glycol solution 10 1431 3.871×10-10 8.33 4.474×10-6 49.58 57.91 20 987 4.286×10-10 6.13 5.491×10-6 46.51 52.64 30 561 6.391×10-10 5.35 3.748×10-5 42.42 47.77 40 314 7.373×10-10 4.09 6.743×10-5 34.01 38.1 Propylene glycol solution 10 2675 4.093×10-10 12.51 3.226×10-5 50.01 62.52 20 1577 6.839×10-10 8.29 3.898×10-5 49.88 58.17 30 712 7.712×10-10 6.62 4.483×10-5 44.75 51.37 40 649 8.478×10-10 4.22 5.103×10-5 36.69 40.91