一、前言评定合金在介质中耐均匀腐蚀性能的加速试验方法有化学浸渍法及电化学测试方法两大类。电化学方法能迅速测出合金腐蚀性的优劣,并可定量测出合金在特定介质中的腐蚀速率、但因所选择的方法受到被测材料在介质中发生的腐蚀反应的类型所支配,所以用电化学极化法测得的金属及合金的腐蚀速率数据,要在掌握了它的腐蚀动力学规律(即腐蚀类型) I. INTRODUCTION Accelerated test methods for evaluating the uniform corrosion resistance of alloys in media include chemical impregnation method and electrochemical test method. Electrochemical methods can quickly determine the pros and cons of alloy corrosion, and can be measured quantitatively corrosion rate of the alloy in a particular medium, but because of the selected method by the measured material in the medium dominated by the type of corrosion reaction, Therefore, the electrochemical polarization of the measured metal and alloy corrosion rate data, to grasp its corrosion kinetics (ie, the type of corrosion)