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5 依据点蚀坑密度和大小对点蚀等级评定[32]

Table 5 Grade evaluation of pitting based on pit density and pit size[32]

Corrosion grade A B C Density / points·m-2 Size / mm2 Depth / mm 1 ≤ 2.5 × 103 ≤ 0.5 ≤ 0.4 2 2.5 × 103-1 × 104 0.5-2.0 0.4-0.8 3 1 × 104-5 × 104 2.0-8.0 0.8-1.6 4 5 × 104-1 × 105 8.0-12.5 1.6-3.2 5 1 × 105-5 × 105 12.5-24.5 3.2-6.4