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作者使用现场挂片的焊缝试样,通过扫描电镜能谱分析焊缝金属波峰、波谷的化学成分,并且用特殊的电化学测试技术,测定波峰、波谷的极化曲线,解释了尿素生产中316L不锈钢焊缝波谷较波峰更易腐蚀的现象.
The author used the specimen of the live coupons to analyze the chemical composition of the metal peaks and troughs of the weld by scanning electron microscopy and the polarization curves of the crests and valleys with special electrochemical testing techniques to explain the production of urea 316L stainless steel weld trough corrosion more corrosive than the phenomenon.