304不锈钢在不同温度硝酸熔盐中的腐蚀行为
Corrosion Behavior of 304 Stainless Steel in Molten Nitrate Salt at Different Temperatures
摘 要
采用腐蚀动力学方法，结合腐蚀表面形貌观察和微区成分分析，研究了304不锈钢在不同温度（400，450，500，565℃）60%NaNO3+40%KNO3（质量分数）熔盐中的腐蚀行为。结果表明：试验钢在该熔盐中的腐蚀速率随着温度升高而增大，在565℃下的腐蚀速率达到99.6×10-5 mg·cm-2·h-1；在400℃下试验钢表面只有极少量氧化腐蚀产物，在450℃和500℃下表面生成少量的Fe2O3，在565℃下表面形成以Fe2O3和（Fe，Cr）3O4为主的氧化腐蚀产物；随着温度升高，试验钢表面Fe2O3含量增加，氧化腐蚀程度加重。
熔盐腐蚀
腐蚀动力学
硝酸盐
304 stainless steel
molten salt corrosion
corrosion kinetics
nitrate salt
Abstract
Corrosion behavior of 304 stainless steel in molten salt at different temperatures (400,450,500,565℃) was studied by corrosion kinetic method, corrosion surface observation and micro area composition analysis; the molten salt was composed of 60wt%NaNO3+40wt%KNO3. The results show that the corrosion rate of the tested steel in the molten salt increased with the increase of temperature, and reached 99.6×10-5 mg·cm-2·h-1 at 565℃. There was only few oxidation corrosion products on the surface of the tested steel at 400℃. There was a small amount of Fe2O3 on the surface at 450℃ and 500℃. The oxidation corrosion products mainly content of Fe2O3 and (Fe, Cr) 3O4 were formed on the surface at 565℃, with the increase of temperature, the content of Fe2O3 increased considerably and the oxidation corrosion degree aggravated.
中图分类号 TG172.9 DOI 10.11973/jxgccl201905014
所属栏目 物理模拟与数值模拟
基金项目
收稿日期 2018/10/24
修改稿日期 2019/4/29
网络出版日期
作者单位点击查看
备注周才正(1980-),男,青海西宁人,工程师,学士
引用该论文: ZHOU Caizheng,LUO Sang,SUN Yanhu,ZHANG Xuewen,TANG Jianqun,GONG Jianming. Corrosion Behavior of 304 Stainless Steel in Molten Nitrate Salt at Different Temperatures[J]. Materials for mechancial engineering, 2019, 43(5): 68～70
周才正,洛桑,孙延虎,张学文,唐建群,巩建鸣. 304不锈钢在不同温度硝酸熔盐中的腐蚀行为[J]. 机械工程材料, 2019, 43(5): 68～70
共有人对该论文发表了看法，其中：
人认为该论文很差
人认为该论文较差
人认为该论文一般
人认为该论文较好
人认为该论文很好
参考文献
【1】王志峰,原郭丰.分布式太阳能热发电技术与产业发展分析[J].中国科学院院刊,2016,31(2):182-190.
【2】刘德有,郛苏,冯晓琼.太阳能热发电系统与常规火电厂联合运行的可行性研究[C]//2007年中国国际发电技术会议论文集.上海:2007.中国国际发电技术会议组委会,2007:533-539.
【3】ZHAO C Y, WU Z G. Thermal property characterization of a low melting-temperature ternary nitrate salt mixture for thermal energy storage systems[J]. Solar Energy Materials and Solar Cells,2011,95(12):3341-3346.
【4】AHMED O, ZHOU L, MOHAJERI N, et al. Corrosion behaviour of AISI 304 stainless steel with solar salt heat transfer fluid[J]. Advanced Materials Research,2014,922:13-17.
【5】DUNN R I, HEARPS P J, WRIGHT M N. Molten-salt power towers:Newly commercial concentrating solar storage[J]. Proceedings of the IEEE,2012,100(2):504-515.
【6】SOLEIMANI DORCHEH A, DURHAM R N, GALETZ M C. Corrosion behavior of stainless and low-chromium steels and IN625 in molten nitrate salts at 600℃[J]. Solar Energy Materials and Solar Cells,2016,144:109-116.
【7】KRUIZENGA A, GILL D. Corrosion of iron stainless steels in molten nitrate salt[J]. Energy Procedia,2014,49:878-887.
【2】刘德有,郛苏,冯晓琼.太阳能热发电系统与常规火电厂联合运行的可行性研究[C]//2007年中国国际发电技术会议论文集.上海:2007.中国国际发电技术会议组委会,2007:533-539.
【3】ZHAO C Y, WU Z G. Thermal property characterization of a low melting-temperature ternary nitrate salt mixture for thermal energy storage systems[J]. Solar Energy Materials and Solar Cells,2011,95(12):3341-3346.
【4】AHMED O, ZHOU L, MOHAJERI N, et al. Corrosion behaviour of AISI 304 stainless steel with solar salt heat transfer fluid[J]. Advanced Materials Research,2014,922:13-17.
【5】DUNN R I, HEARPS P J, WRIGHT M N. Molten-salt power towers:Newly commercial concentrating solar storage[J]. Proceedings of the IEEE,2012,100(2):504-515.
【6】SOLEIMANI DORCHEH A, DURHAM R N, GALETZ M C. Corrosion behavior of stainless and low-chromium steels and IN625 in molten nitrate salts at 600℃[J]. Solar Energy Materials and Solar Cells,2016,144:109-116.
【7】KRUIZENGA A, GILL D. Corrosion of iron stainless steels in molten nitrate salt[J]. Energy Procedia,2014,49:878-887.
相关信息
