摘要
研究了在25℃、相对湿度为80％的条件下,NaCl和低浓度 SO2的协同效应对A3钢初期大气腐蚀行为的影响.分析了该条件下A3钢的初期大气腐蚀动力学,证实了NaCl和低浓度SO2的协同效应导致腐蚀明显加剧,腐蚀失重远大于两者各自存在时引起的腐蚀.同时应用扫描电镜（SEM/EDAX）、X射线衍射（XRD）和Fourier变换红外光谱（FTIR）对A3钢表面形貌和腐蚀产物进行了分析.阐述了NaCl和SO2协同效应的腐蚀机理.
The influence of NaCl and lower concentration of SO2 on the initial atmospheric corrosion of A3 steel at 25℃and 80% relative humidity (RH) was investigated. The results show that NaCl and SC-2 can obviously accelerate the corrosion of A3 steel respectively. The combined effect of NaCl and SO2 on the initial corrosion of A3 steel is greater than that caused by each single component. Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy and electron dispersion X-ray analysis (SEM/EDAX) were used to characterize the corrosion products of A3 steel. A probable mechanism is presented to explain the experimental results.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
2002年第10期1062-1066,共5页
Acta Metallurgica Sinica
基金
国家自然科学基金资助项目59899144
