汽轮机叶片用1Cr13钢在初凝水中的腐蚀特性
Corrosion Characteristic of Steam Turbine Blade 1Cr13 Steel in Simulated Initial-condensate Water
摘 要
采用电化学方法和微观表征手段（SEM，EDS，XRD等）研究了汽轮机叶片用1Cr13钢在含SO42-，Cl-，NO3-，F-等杂质阴离子的模拟初凝水中的腐蚀特性。结果表明：1Cr13钢的酸腐蚀问题并不是由低分子有机酸单独引起的，而是低分子有机酸与杂质阴离子综合作用的结果，腐蚀程度与阴离子的种类和浓度有很大的关系。因此，为了保障汽轮机的安全可靠运行，有必要提高原水水质，及时在线检测杂质离子含量，制定相应标准。
杂质阴离子
1Cr13钢
腐蚀
电化学
low molecular organic acid
impurity anion
1Cr13 steel
corrosion
electrochemistry
Abstract
Corrosion behavior of turbine blade 1Cr13 steel in simulated initial condensate water with SO42-, Cl-, NO3-, F- and other impurity anions was studied by electrochemical testing and microscopic characterization (SEM, EDS, XRD and so on). The results showed that the acid corrosion of 1Cr13 steel was not caused by low molecular weight organic acids alone, but rather as a result of the combined effect of impurity anions and low molecular weight organic acid. The degree of corrosion had a great relationship with the type and concentration of anions. Therefore, in order to guarantee the safe and reliable operation of the turbine, it is necessary to improve the quality of raw water, timely detect the content of impurity ion on-line, develop the appropriate standards.
中图分类号 TG172.4 DOI 10.11973/fsyfh-201807001
所属栏目 试验研究
基金项目 湖南省科技计划重点项目（2013GK2016）；河南省电力公司电力科学研究院自筹科研项目（19151209）；湖南省研究生科研创新项目（CX2016B415）资助
收稿日期 2016/9/21
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联系人作者朱志平(zzp8389@163.com)
引用该论文: WANG Fengtao,WANG Nana,CHANG Liang,ZHU Zhiping,XIAO Jianfeng. Corrosion Characteristic of Steam Turbine Blade 1Cr13 Steel in Simulated Initial-condensate Water[J]. Corrosion & Protection, 2018, 39(7): 489
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