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从五十年代起就曾有人对铁在酸性介质中的阳极过程及腐蚀行为进行过系统的研究.鉴于这一体系在国民经济中的重要地位,故其研究工作一直受到各国金属腐蚀工作者的极大重视,其中对酸性氯化物介质中铁的腐蚀行为研究较多.近年来国内常采用盐酸作为低压锅炉的酸洗剂,所以研究这一体系的阳极过程及腐蚀行为是非常必要的.本文采用旋转盘-环电极技术研究20号钢在酸性氯化物溶液中的阳极过程,并试图检测其溶解产物及计算腐蚀速度. 实验旋转盘-环电极技术的原理及计算公式可参阅有关文献.实验中使用了两个电极,一个是20号钢盘、铂环电极,其r_1、
Since the 1950s, there has been a systematic study of the anodic process and corrosion behavior of iron in acidic media. Due to the important position of this system in the national economy, its research work has been influenced by the corrosion resistance of metal corrosion workers in various countries Which attaches great importance to the corrosion of iron in acid chloride media.In recent years, hydrochloric acid is often used as the pickling agent for low pressure boilers in China, so it is necessary to study the anode process and corrosion behavior of this system.In this paper, Rotating disk - ring electrode technology 20 steel in acid chloride solution in the anode process, and try to detect the dissolution products and calculate the corrosion rate.Experimental rotary disk - ring electrode technology principles and calculation formula can be found in the literature.In the experiment Using two electrodes, one is 20 steel plate, platinum ring electrode, the r_1,