奥氏体不锈钢在四元硝酸盐中的动态腐蚀行为研究

马丽娜; 吴玉庭; 张灿灿; 鹿院卫; 董彦召; 焦新亮

doi:10.19912/j.0254-0096.tynxb.2021-1286

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太阳能学报 ›› 2023, Vol. 44 ›› Issue (3) : 497-503. DOI: 10.19912/j.0254-0096.tynxb.2021-1286

奥氏体不锈钢在四元硝酸盐中的动态腐蚀行为研究

马丽娜¹, 吴玉庭¹, 张灿灿¹, 鹿院卫¹, 董彦召², 焦新亮²

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DYNAMIC CORROSION BEHAVIORS OF AUTENNITIC STAINLESS STEEL IN QUATERNARY NITRATE-NIOTRITE MOLTEN SALT

Ma Li’na¹, Wu Yuting¹, Zhang Cancan¹, Lu Yuanwei¹, Dong Yanzhao², Jiao Xinliang²

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摘要

为探究本实验室配制的新型混合低熔点熔融四元硝酸盐与太阳能热发电系统中不锈钢合金的相容性,在搭建的动态腐蚀试验台进行实验条件为565 ℃,流速分别为0.6、1.3和2.0 m/s下1000 h 304不锈钢的动态腐蚀试验。实验结果表明：3种流速下304不锈钢均发生了氧化腐蚀。腐蚀失重随腐蚀时间的增加均呈现增加的趋势,变化规律更接近抛物线关系。同时,流速的变化会对腐蚀产生影响。此外,流速的增加对试片表面生成的腐蚀产物类型无影响。

Abstract

To explore the compatibility between the new mixture of low melting point fused quaternary nitrate-nitrite prepared in our laboratory and stainless steels in concentrating solar power system, the dynamic corrosion experiment of 304 stainless steel during 1000 h is carried out at 565 ℃ and the flow rate of 0.6, 1.3 and 2.0 m/s, respectively. The experimental results show that the oxidation corrosion of 304 stainless steel occurs at three flow rates. Corrosion weight loss (m_mass) increases with the increasing corrosion time, and the change law is closer to the parabolic relationship. Meanwhile, the varied flow rates had obvious effects on corrosion behaviors. In addition, the increase in flow rate had no significant effects on the types of oxidation products.

导出引用

马丽娜, 吴玉庭, 张灿灿, 鹿院卫, 董彦召, 焦新亮. 奥氏体不锈钢在四元硝酸盐中的动态腐蚀行为研究[J]. 太阳能学报. 2023, 44(3): 497-503 https://doi.org/10.19912/j.0254-0096.tynxb.2021-1286

Ma Li’na, Wu Yuting, Zhang Cancan, Lu Yuanwei, Dong Yanzhao, Jiao Xinliang. DYNAMIC CORROSION BEHAVIORS OF AUTENNITIC STAINLESS STEEL IN QUATERNARY NITRATE-NIOTRITE MOLTEN SALT[J]. Acta Energiae Solaris Sinica. 2023, 44(3): 497-503 https://doi.org/10.19912/j.0254-0096.tynxb.2021-1286

中图分类号： TK513.5

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