Intergranular corrosion behavior of high nitrogen austenitic stainless steel

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	Intergranular corrosion behavior of high nitrogen austenitic stainless steel
其他题名	Intergranular corrosion behavior of high nitrogen austenitic stainless steel
	Li Huabing; Jiang Zhouhua; Zhang Zurui; Cao Yang; Yang Yan
	2009
发表期刊	INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
ISSN	1674-4799
卷号	16 期号:6 页码:654-660
摘要	The intergranular corrosion (IGC) behavior of high nitrogen austenitic stainless steel (HNSS) sensitization treated at 650-950 degrees C was investigated by the double loop electrochemical potentiodynamic reactivation (DL-EPR) method. The effects of the electrolytes, scan rate, sensitizing temperature on the susceptibility to IGC of HNSS were examined. The results show that the addition of NaCl is an effective way to improve the formation of the cracking of a passive film in chromium-depleted zones during the reactivation scan. Decreasing the scan rate exhibits an obvious effect on the breakdown of the passive film. A solution with 2 mol/L H(2)SO(4)+1 mol/L NaCl+0.01 mol/L KSCN is suitable to check the susceptibility to IGC of HNSS at a sensitizing temperature of 650-950 degrees C at a suitable scan rate of 1.667 mV/s. Chromium depletion of HNSS is attributed to the precipitation of Cr(2)N which results in the susceptibility to IGC. The synergistic effect of Mo and N is suggested to play an important role in stabilizing the passive film to prevent the attack of IGC.
其他摘要	The intergranular corrosion (IGC) behavior of high nitrogen austenitic stainless steel(HNSS) sensitization treated at 650-950℃ was investigated by the double loop electrochemical potentiodynamic reactivation(DL-EPR) method.The effects of the electrolytes,scan rate,sensitizing temperature on the susceptibility to IGC of HNSS were examined. The results show that the addition of NaCl is an effective way to improve the formation of the cracking of a passive film in chromium-depleted zones during the reactivation scan. Decreasing the scan rate exhibits an obvious effect on the breakdown of the passive film. A solution with 2 mol/L H2_SO_4+1 mol/L NaCl+0.01 mol/L KSCN is suitable to check the susceptibility to IGC of HNSS at a sensitizing temperature of 650-950℃ at a suitable scan rate of 1.667 mV/s. Chromium depletion of HNSS is attributed to the precipitation of Cr_2N which results in the susceptibility to IGC. The synergistic effect of Mo and N is suggested to play an important role in stabilizing the passive film to prevent the attack of IGC.
关键词	POTENTIOKINETIC REACTIVATION TEST AISI 316L STEEL SUSCEPTIBILITY SENSITIZATION ALLOY-600 intergranular corrosion high nitrogen austenitic stainless steel sensitization passive film chromium depletion
收录类别	CSCD
语种	英语
资助项目	[National Natural Science Foundation of China] ; [Baosteel Group Corporation]
CSCD记录号	CSCD:3786406
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/141852
专题	中国科学院金属研究所
作者单位	中国科学院金属研究所
推荐引用方式 GB/T 7714	Li Huabing,Jiang Zhouhua,Zhang Zurui,et al. Intergranular corrosion behavior of high nitrogen austenitic stainless steel[J]. INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS,2009,16(6):654-660.
APA	Li Huabing,Jiang Zhouhua,Zhang Zurui,Cao Yang,&Yang Yan.(2009).Intergranular corrosion behavior of high nitrogen austenitic stainless steel.INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS,16(6),654-660.
MLA	Li Huabing,et al."Intergranular corrosion behavior of high nitrogen austenitic stainless steel".INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS 16.6(2009):654-660.