RESEARCH ON HIGH TEMPERATURE CORROSION BEHAVIOR OF NOVEL LOW MELTING POINT TERNARY MIXED NITRATES

Han Xinlong; Zhang Chunlin; Lu Yuanwei; Gao Qi; Wang Yuanyuan; Wu Yuting

doi:10.19912/j.0254-0096.tynxb.2024-0500

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (8) : 309-314. DOI: 10.19912/j.0254-0096.tynxb.2024-0500

RESEARCH ON HIGH TEMPERATURE CORROSION BEHAVIOR OF NOVEL LOW MELTING POINT TERNARY MIXED NITRATES

Han Xinlong¹, Zhang Chunlin², Lu Yuanwei¹, Gao Qi¹, Wang Yuanyuan¹, Wu Yuting¹

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Abstract

In order to investigate the high-temperature corrosion characteristics of a new type of low melting point ternary mixed nitrate, this paper adopts the weight loss method to study the static corrosion behavior of 347H and 316L stainless steel in ternary nitrate at two temperatures of 500 ℃ and 550 ℃. The results show that with the increase of corrosion temperature, the corrosion rate of 347H and 316L stainless steel increases; At the same temperature, as the soaking time increases, the weight loss of 347H and 316 L stainless steel increases, while the corrosion rate decreases. The corrosion rates of 347H stainless steel and 316L stainless steel after 1000 hours of corrosion at 550 ℃ are 0.0313 mm/a and 0.04439 mm/a, respectively. Under the same corrosion time, 347H stainless steel exhibits better corrosion resistance.

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solar thermal power generation / molten salt / nitrate / corrosion / corrosion rate / low-melting / stainless steel

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Han Xinlong, Zhang Chunlin, Lu Yuanwei, Gao Qi, Wang Yuanyuan, Wu Yuting. RESEARCH ON HIGH TEMPERATURE CORROSION BEHAVIOR OF NOVEL LOW MELTING POINT TERNARY MIXED NITRATES[J]. Acta Energiae Solaris Sinica. 2025, 46(8): 309-314 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0500

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