Q345q桥梁钢和Q345qNH耐候钢在模拟工业大气+除冰盐混合介质中的腐蚀行为

郭铁明, 徐秀杰, 张延文, 宋志涛, 董志林, 金玉花

Corrosion Behavior of Q345q Bridge Steel and Q345qNH Weathering Steel in a Mixed Medium of Simulated Industrial Environment Solution and Deicing Salt

GUO Tieming, XU Xiujie, ZHANG Yanwen, SONG Zhitao, DONG Zhilin, JIN Yuhua

表2 腐蚀溶液的成分

Table 2 Compositions of corrosion solutions

Corrodent GB pH Ingredient Deicing salt solution GB/T 19746-2005 9.3±0.5 (52.5 g±0.1 g)NaCl, (0.5 g±0.002 g)Na2SO4, (0.25 g±0.002 g)Na2SO3, (52.5 g±0.1 g)CaCl2·2H2O, (0.1 g±0.002 g)Na2S2O3 NaHSO3 solution TB/T 2375-93 4.4-4.8 0.01 mol/L NaHSO3 Mixed solution 4.7±0.5 deicing salt solution+0.01 mol/L NaHSO3 solution