金属-板材-图片10-曼谷典型钢暴露1年腐蚀形貌
碳钢表面蚀坑尺寸和深度较大,且凹凸不平, 420qNH 表面蚀坑尺寸和深度相对较小,但是较为密集。随着暴露时间的延长,碳钢和 420qNH 表面蚀坑尺寸增大,表面粗糙度增加。
Metal plate picture 10 corrosion morphology of typical steel exposed for one year in Bangkok
The size and depth of pits on the surface of carbon steel are relatively large and uneven, while those on the surface of 420qnh are relatively small but dense. With the extension of exposure time, the pit size and surface roughness of carbon steel and 420qnh increased.