化学工业迅速地发展,对钢材的要求越来越高,常用的Cr-Ni奥氏体不锈钢在设备的滑动部位,腐蚀咬合现象严重,影响了正常运转。因此,引起人们的关注,对此开展了研究工作。我们采用椭园术和电化学相结合的方法,研究表面钝化膜的成长速率、膜的厚度、膜的耐蚀性。我们认为这些因素与设备的腐蚀咬合现象有密切关系。 The rapid development of the chemical industry, the higher and higher requirements of steel, commonly used Cr-Ni austenitic stainless steel sliding parts in the equipment, corrosion and occlusion serious, affecting the normal operation. Therefore, it has aroused people’s attention and conducted research on it. We use the combination of ellipse and electrochemical methods to study the surface passivation film growth rate, the thickness of the film, the corrosion resistance of the film. We think these factors are closely related to the phenomenon of corrosion and occlusion of equipment.