摘要
为了分析锅炉水冷壁存在的高温腐蚀问题,利用高温气氛炉试验台进行了锅炉水冷壁材料20g的高温腐蚀试验,采用热分析动力学的方法对试验的数据进行处理和分析,求得了不同浓度的主要腐蚀气体SO2在试片温度390～510℃时20g的活化能和指前因子,并利用配有能谱分析仪的扫描电镜对腐蚀产物的结构和元素组成进行了分析,可以得出随着温度和SO2浓度的升高腐蚀作用加强的结论,尤其是对腐产物的氧化膜结构和腐蚀速率的影响较为明显。同时得出了20g在腐蚀过程中的平均速度。
In order to analyze the problems of high temperature corrosion in the water-cooled wall of the boiler, the high temperature corrosion experiments of water-cooled wall tube material 20g of boiler have been made using the test bed-high temperature gas furnace. Through dealing and analyzing the data by means of the thermal analysis kinetics, the activation energy E and pre-exponential gene A are got at the atmosphere of different density SO2 on the temperature of 390-510℃. The corrosion＇s appearance is analyzed and element form is made by SEM with energy analyzer. The conclusion can be got that with the temperature and SO2 density addition, the affect of high temperature corrosion is increased, particularly to the structure of the oxidation film and the velocity of corrosion. The average corrosion velocity in the orocession of corrosion is got about 20g.
出处
《电站系统工程》
北大核心
2005年第6期32-34,37,共4页
Power System Engineering
关键词
20g
二氧化硫
热分析动力学
高温腐蚀
20g
SO2
thermal analysis kinetics
high temperature corrosion
