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

Ma Li&#x02019;na; Wu Yuting; Zhang Cancan; Lu Yuanwei; Dong Yanzhao; Jiao Xinliang

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

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Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (3) : 497-503. DOI: 10.19912/j.0254-0096.tynxb.2021-1286

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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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.

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concentrating solar power / stainless steel / corrosion / molten salt / dynamic

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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

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