Study on neutral salt spray corrosion resistance of tinning plates with different tin coating
XU Fei-fan1, SHENG Hai1, ZHANG Fa-yun2, SHI Yun-guang1, YANG Jian-wei1, YAN Song-tao3
1. Shougang Research Institute of Technology, Beijing 100041, China; 2. Nuclear and Radiation Safety Center, Beijing 100082, China; 3. National Center for Materials Service Safety, University of Science and Technology Beijing, Beijing 100083, China
Abstract：The analysis of corrosion resistance of tinning plates with different tin coating can improve the tinning process and provide data support of material selection for downstream users. The tinning plates with equal difference of tin coating (2.8, 5.6, 8.4 and 11.2g/m2) were tested by neutral salt spray. Then the microstructure, structure characteristic and elemental content of rust spots was analyzed by scanning electron microscope (SEM), electronic probe microanalyzer (EPMA) and X-ray photoelectron spectrometer (XPS). The difference of corrosion resistance among plates was discussed. The results showed that with the increase of tin coating, the rust spot distribution on surface of tinning plate changed from much scattered-type to little point-type, the morphology transited from dendritic to granular, the enrichment of O element which represented the degree of corrosion decreased significantly. When the tinning coating increased from 2.8 to 5.6g/m2, the corrosion resistance of tinning plates was improved greatly. The cost performance superiority of tinning plate with tinning coating of 5.6g/m2 was most obvious.
许斐范, 生海, 张发云, 石云光, 杨建炜, 闫松涛. 不同厚度镀锡量板材中性盐雾耐蚀性研究[J]. 冶金分析, 2017, 37(11): 7-11.
XU Fei-fan, SHENG Hai, ZHANG Fa-yun, SHI Yun-guang, YANG Jian-wei, YAN Song-tao. Study on neutral salt spray corrosion resistance of tinning plates with different tin coating. , 2017, 37(11): 7-11.
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