高铁转向架用钢G390NH在模拟海洋和工业大气环境下的腐蚀行为及产物演化规律

宋嘉良, 江紫雪, 易盼, 陈俊航, 李曌亮, 骆鸿, 董超芳, 肖葵

Corrosion Behavior and Product Evolution of Steel for High-Speed Railway Bogie G390NH in Simulated Marine and Industrial Atmospheric Environment

SONG Jialiang, JIANG Zixue, YI Pan, CHEN Junhang, LI Zhaoliang, LUO Hong, DONG Chaofang, XIAO Kui

表3 3.5%NaCl环境中不同周期腐蚀产物半定量分析结果

Table 3 Semi-quantitative analysis results of corrosion products in different cycles in 3.5%NaCl environment

Sample Product analysis / (mass fraction, %) α / γ α-FeOOH γ-FeOOH Fe3O4 NaCl β-FeOOH 24 h - - 100.0 - - - 120 h inner 28.1 30.1 41.8 - - 0.93 120 h outer 35.0 44.5 20.5 - - 0.79 240 h inner - - 100.0 - - - 240 h outer 32.0 43.3 9.8 14.9 - 0.74 360 h inner - - 83.5 - 16.5 - 360 h outer 37.0 28.6 10.8 23.6 - 1.29