乙二醇-水冷媒中Cu-Al电偶腐蚀行为及反应机制研究
陈思敏, 练龙江, 黄延淞, 曾兰香, 雷冰, 孟国哲

Galvanic Corrosion Behavior and Reaction Mechanism of Cu-Al Couple in Ethylene Glycol-Water Coolent
CHEN Simin, LIAN Longjiang, HUANG Yansong, ZENG Lanxiang, LEI Bing, MENG Guozhe
表3 电偶电流密度与对应电偶腐蚀风险等级[30]
Table 3 Evaluation of galvanic corrosion grade based on galvanic current density[30]
RankCurrent density / μA·cm-2Corrosion gradeUsage suggestion
AIg ≤ 0.3No corrosionDirect contact
B0.3 < Ig ≤ 1.0Slight corrosionContact in certain condition
C1.0 < Ig ≤ 3.0Local corrosionNo contact, use after protection
D3.0 < Ig ≤ 10.0Critical corrosionNo contact, use after protection
EIg ≥ 10.0Severe corrosionNo contact, use after protection