410不锈钢在550 ℃流动的铅铋共晶合金中的腐蚀行为

doi:10.11896/cldb.18080147

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Abstract In order to study the corrosion behavior of martensitic stainless steel 410 in lead-bismuth eutectic alloy (LBE) at high temperature with different relative velocities, the article investigated the corrosion phenomena of stainless steel 410 in lead-bismuth eutectic alloy at 550 ℃ for 600 h with relative velocities of 0 m/s, 1.70 m/s, 2.31 m/s and 2.98 m/s. X-ray diffraction (XRD), scanning electron microscopes (SEM) and energy dispersive spectrometry (EDS) were carried out on the surface and cross-section of corrosive samples with different relative velocities. The results indicate that the oxide layer becomes denser and thicker on the surface of corrosion samples with the increase of relative flow rate, due to the increase of mass transfer rate accelerates the formation rate of oxide layer. The oxide layer on the surface of corrosion samples can be divi-ded into outer oxide layer and inner oxide layer. The outer oxide layer is mainly composed of Fe₃O₄ and partially infiltrated Pb-Bi and the inner oxide layer is mainly spinel (Fe, Cr)₃O₄. Intergranular-corrosion and oxidation-corrosion occurred simultaneously during the corrosion process.

Key words： martensitic stainless steel 410 lead-bismuth eutectic alloy (LBE) relative velocity oxidation-corrosion intergranular-corrosion

Published: 29 August 2019

CLC number:

TL341

About author:: Na Juis a master degree candidate in Jiangsu University. Her tutor is Yucheng Lei. She is engaged in researching on the corrosion of nuclear materials in lead-bismuth eutectic alloy.Yucheng Leiis a professor and doctoral supervisor in Jiangsu University. He is mainly engaged in the research and development of welding technology and equipment, control and simulation of welding process, advanced connection technology and so on. He has published more than 150 journal papers and authorized 8 national invention patents.

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	JU Na
	LEI Yucheng
	CHEN Gang
	ZHU Qiang
	LI Tianqing
	WANG Dan

Cite this article:

JU Na,LEI Yucheng,CHEN Gang, et al. Corrosion Behavior of Stainless Steel 410 in Flowing Lead-Bismuth Eutectic Alloy at 550 ℃[J]. Materials Reports, 2019, 33(20): 3489-3493.

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http://www.mater-rep.com/EN/10.11896/cldb.18080147 OR http://www.mater-rep.com/EN/Y2019/V33/I20/3489

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