Effects of hydrogen on the anodic behavior of Alloy 690 at 60 degrees C

IMR OpenIR

	Effects of hydrogen on the anodic behavior of Alloy 690 at 60 degrees C
	T. Dan; T. Shoji; Z. P. Lu; K. Sakaguchi; J. Q. Wang; E. H. Han; W. Ke
	2010
发表期刊	Corrosion Science
ISSN	0010-938X
卷号	52 期号:4 页码:1228-1236
摘要	Polarization and electrochemical impedance spectroscopy (EIS) measurements, Mott-Schottky (M-S) analysis and X-ray photoelectron spectroscopy (XPS) were used to investigate the effects of hydrogen on the anodic behavior of a one-dimensionally (1D) 25% cold worked (CW) Alloy 690 thermal treated (IT) in a boric acid and sodium sulphate solution at 60 degrees C. The pre-hydrogen-charged specimen exhibited a higher anodic current than that of the uncharged specimen below the transpassive potential. The charged hydrogen can be trapped in the metal. Electrochemical impedance spectroscopy (EIS) showed that the resistance capacitance loop of the hydrogen-charged specimen was significantly smaller than that of the uncharged specimen. Mott-Schottky analyses indicated that the passive film formed on Alloy 690 at -0.2 V(SCE) was an n-type semiconductor, with a p-n hetero-junction at 0.2 V(SCE). Charged hydrogen increased the carrier density and the thickness of the passive film both at 0.2 V(SCE) and 0.2 V(SCE). The Ni/Cr ratio in the surface film decreased after hydrogen charging, indicating that charged hydrogen could enhance the oxide film growth by increasing the OH(-) (O(2-)) concentrations through its reaction with vacancies. Crown Copyright (C) 2009 Published by Elsevier Ltd. All rights reserved.
部门归属	[dan, tichun; shoji, tetsuo; lu, zhanpeng; sakaguchi, kazuhiko] tohoku univ, fracture & reliabil res inst, sendai, miyagi 980, japan. [dan, tichun; wang, jianqiu; han, en-hou; ke, wei] chinese acad sci, inst met res, environm corros ctr, shenyang 110016, peoples r china.;shoji, t (reprint author), tohoku univ, fracture & reliabil res inst, sendai, miyagi 980, japan;tshoji@rift.mech.tohoku.ac.jp
关键词	Alloy 690 Eis Mott-schottky Plot Xps Anodic Behavior Hydrogen Charging Revised Pourbaix-diagrams Stress-corrosion Cracking Nickel-based Alloys Passive Films Electronic-properties Aqueous-solution Oxide-films Iron Steel 304-stainless-steel
URL	查看原文
WOS记录号	WOS:000276108900016
引用统计	被引频次：39[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/31065
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	T. Dan,T. Shoji,Z. P. Lu,et al. Effects of hydrogen on the anodic behavior of Alloy 690 at 60 degrees C[J]. Corrosion Science,2010,52(4):1228-1236.
APA	T. Dan.,T. Shoji.,Z. P. Lu.,K. Sakaguchi.,J. Q. Wang.,...&W. Ke.(2010).Effects of hydrogen on the anodic behavior of Alloy 690 at 60 degrees C.Corrosion Science,52(4),1228-1236.
MLA	T. Dan,et al."Effects of hydrogen on the anodic behavior of Alloy 690 at 60 degrees C".Corrosion Science 52.4(2010):1228-1236.