Abstract：The surface micromorphology of cold rolled automobile steel has an important influence on its properties such as stamping, coating, oil storage and corrosion resistance. The surface morphologies of DC04 produced by three different steel plants were characterized by OLS5100 laser confocal microscope, which were also compared with the images collected by scanning electron microscope. Meanwhile, the non-uniformity, height distribution and finish of surface micromorphology were evaluated by parameter characterization of laser confocal microscope. The test results showed that the surface topography images collected by laser confocal microscope had clear three-dimensional appearance and strong stereoscopic sense. The surface pits of DC04 produced by plant A were large and unevenly distributed, and the rolling marks at the bulge were significant. The surface pits of DC04 produced by plant B and C were many, and the surface micro-geometric morphology had a higher degree of regularization. The surface of the bulge was smooth, and the transition with the pit was smooth. The order of surface micromorphology non-uniformity of DC04 in the three steel plants was plant A > plant B > plant C, while the order of height distribution and finish was plant A < plant B < plant C.
杨维宇, 刘妍, 张晓磊, 王亚男. 激光共聚焦显微镜在DC04表面形貌表征中的应用[J]. 物理测试, 2023, 41(2): 21-25.
YANG Weiyu, LIU Yan, ZHANG Xiaolei, WANG Yanan. Application of laser confocal microscope in surface morphology characterization of DC04. PHYSICS EXAMINATION AND TESTING, 2023, 41(2): 21-25.
2023, Vol. 41 
