Role of late transition metals on pitting resistance of Zr-Ti-(Cu, Ni, Co)-Al bulk metallic glasses in 0.6 M NaCl aqueous solution

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	Role of late transition metals on pitting resistance of Zr-Ti-(Cu, Ni, Co)-Al bulk metallic glasses in 0.6 M NaCl aqueous solution
	Li, Yu; Xu, Jian; Xu, J (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China.
	2017-11-01
发表期刊	JOURNAL MATER SCI TECHNOL
ISSN	1005-0302
卷号	33 期号:11 页码:1278-1288
摘要	Four quanternary Zr-based bulk metallic glasses (BMGs) were selected, including the Zr46Ti2Cu45Al7, Zr61Ti2Cu25Al12, Zr55Ti4Ni22Al19 and Zr55Ti2Co28Al15, due to their robust glass-forming ability and containing a single species of late transition metal (LTM) in compositions. Their pitting resistances in 0.6 M NaCl aqueous solution were investigated to examine the role of LTM elements in the alloys, with electrochemical measurements, surface morphology observation and x-ray photoelectron spectrometry analysis. It is shown that in comparision with two Cu-bearing BMGs, Zr55Ti4Ni22Al19 and Zr55Ti2Co28Al15 BMGs exhibited significantly superior resistance to pitting. Zr61Ti2Cu25Al12, Zr55Ti4Ni22Al19 and Zr55Ti2Co28Al15 BMGs manifested distinct passivation behaviour, because of the formation of surface passive film mainly comprising of ZrO2, TiO2 and Al2O3. However, no significant differences in the electrochemical resistive properties and thicknesses of passive films were found between Zr61Ti2Cu25Al12 and Zr55Ti4Ni22Al19 BMGs. Nevertheless, at the passive film/metal interface, copper enrichment took place in Zr61Ti2Cu25Al12, whereas the nickel was slightly deficient at the interface in Zr55Ti4Ni22Al19. During pitting propagation, selective dissolution of the zirconium, titanium and aluminum over the copper took place in Zr61Ti2Cu25Al12, but it was not the case in Zr55Ti4Ni22Al19. For the two Cu-bearing BMGs, reduction of passive base metal elements in composition resulted in local selective dissolution, even absence of the passivation. (C) 2017 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.; Four quanternary Zr-based bulk metallic glasses (BMGs) were selected, including the Zr46Ti2Cu45Al7, Zr61Ti2Cu25Al12, Zr55Ti4Ni22Al19 and Zr55Ti2Co28Al15, due to their robust glass-forming ability and containing a single species of late transition metal (LTM) in compositions. Their pitting resistances in 0.6 M NaCl aqueous solution were investigated to examine the role of LTM elements in the alloys, with electrochemical measurements, surface morphology observation and x-ray photoelectron spectrometry analysis. It is shown that in comparision with two Cu-bearing BMGs, Zr55Ti4Ni22Al19 and Zr55Ti2Co28Al15 BMGs exhibited significantly superior resistance to pitting. Zr61Ti2Cu25Al12, Zr55Ti4Ni22Al19 and Zr55Ti2Co28Al15 BMGs manifested distinct passivation behaviour, because of the formation of surface passive film mainly comprising of ZrO2, TiO2 and Al2O3. However, no significant differences in the electrochemical resistive properties and thicknesses of passive films were found between Zr61Ti2Cu25Al12 and Zr55Ti4Ni22Al19 BMGs. Nevertheless, at the passive film/metal interface, copper enrichment took place in Zr61Ti2Cu25Al12, whereas the nickel was slightly deficient at the interface in Zr55Ti4Ni22Al19. During pitting propagation, selective dissolution of the zirconium, titanium and aluminum over the copper took place in Zr61Ti2Cu25Al12, but it was not the case in Zr55Ti4Ni22Al19. For the two Cu-bearing BMGs, reduction of passive base metal elements in composition resulted in local selective dissolution, even absence of the passivation. (C) 2017 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
部门归属	[li, yu ; xu, jian] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, liaoning, peoples r china ; [li, yu] univ chinese acad sci, grad sch, beijing 100049, peoples r china
关键词	Bulk Metallic Glass Pitting Corrosion Electrochemical Behavior Passive Film
学科领域	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
资助者	National Natural Science Foundation of China [51571192]
收录类别	SCI
语种	英语
WOS记录号	WOS:000416994500008
引用统计	被引频次：15[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/321006/78997
专题	中国科学院金属研究所
通讯作者	Xu, J (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China.
推荐引用方式 GB/T 7714	Li, Yu,Xu, Jian,Xu, J . Role of late transition metals on pitting resistance of Zr-Ti-(Cu, Ni, Co)-Al bulk metallic glasses in 0.6 M NaCl aqueous solution[J]. JOURNAL MATER SCI TECHNOL,2017,33(11):1278-1288.
APA	Li, Yu,Xu, Jian,&Xu, J .(2017).Role of late transition metals on pitting resistance of Zr-Ti-(Cu, Ni, Co)-Al bulk metallic glasses in 0.6 M NaCl aqueous solution.JOURNAL MATER SCI TECHNOL,33(11),1278-1288.
MLA	Li, Yu,et al."Role of late transition metals on pitting resistance of Zr-Ti-(Cu, Ni, Co)-Al bulk metallic glasses in 0.6 M NaCl aqueous solution".JOURNAL MATER SCI TECHNOL 33.11(2017):1278-1288.