Thermodynamic Destabilization of Ti-O Solid Solution by H-2 and Deoxygenation of Ti Using Mg

doi:10.1021/jacs.6b00845

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	Thermodynamic Destabilization of Ti-O Solid Solution by H-2 and Deoxygenation of Ti Using Mg
	Zhang, Ying 1,2; Fang, Zhigang Zak 1; Sun, Pei 1; Zhang, Tuoyang 1; Xia, Yang 1; Zhou, Chengshang 1; Huang, Zhe 1
	2016-06-08
发表期刊	JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
ISSN	0002-7863
卷号	138 期号:22 页码:6916-6919
摘要	Reactive metals including Ti, Zr, Hf, and V, among others, have a strong chemical affinity to oxygen, which makes them difficult to produce and costly to use. It is especially challenging to produce pure or metal alloy powders of these elements when "extremely low oxygen content is required, because they have high solubility for oxygen, and the solid solution of these metals with oxygen is often more stable thermodynamically than their oxides. We report a navel thermochemical approach to destabilize Ti(O) solid solutions using hydrogen, thus enabling deoxygenation of Ti powder using Mg, which has not been possible before because of the thermodynamic stability of Ti(O) solid solutions relative to MgO. The :work on Ti serves as an example for other reactive metals. Both analytical modeling and experimental results show that hydrogen can indeed increase the oxygen potential of Ti-O solid solution alloys; in other words, the stability of Ti-O solid solutions is effectively decreased, thus increasing the thermodynamic driving force for Mg to react with oxygen in Ti. Because hydrogen can be easily removed from Ti by a simple heat treatment, it is used only as a temporary alloying element to destabilize the Ti-O systems. The thermodynamic approach described here is a breakthrough and is applicable to a range of different materials. This work is expected to provide an enabling solution to overcome one of the key scientific and technological hurdles to the additive manufacturing of metals, which is emerging rapidly as the future of the manufacturing industry.
文章类型	Article
WOS标题词	Science & Technology ; Physical Sciences
DOI	10.1021/jacs.6b00845
收录类别	SCI
语种	英语
关键词[WOS]	HYDROGEN SOLUBILITY ; TITANIUM-DIOXIDE ; CHEMICAL PATHWAY ; REDUCTION ; OXYGEN ; CALCIUM ; ALLOYS ; VANADIUM ; METAL
WOS研究方向	Chemistry
WOS类目	Chemistry, Multidisciplinary
项目资助者	Advanced Research Projects Agency - Energy (ARPA-E) of the US Department of Energy (DOE)(DE-AR0000420)
WOS记录号	WOS:000377643300003
引用统计
文献类型	期刊论文
条目标识符	http://ir.ipe.ac.cn/handle/122111/21146
专题	研究所（批量导入）
作者单位	1.Univ Utah, Dept Met Engn, Salt Lake City, UT 84112 USA 2.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Ying,Fang, Zhigang Zak,Sun, Pei,et al. Thermodynamic Destabilization of Ti-O Solid Solution by H-2 and Deoxygenation of Ti Using Mg[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,2016,138(22):6916-6919.
APA	Zhang, Ying.,Fang, Zhigang Zak.,Sun, Pei.,Zhang, Tuoyang.,Xia, Yang.,...&Huang, Zhe.(2016).Thermodynamic Destabilization of Ti-O Solid Solution by H-2 and Deoxygenation of Ti Using Mg.JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,138(22),6916-6919.
MLA	Zhang, Ying,et al."Thermodynamic Destabilization of Ti-O Solid Solution by H-2 and Deoxygenation of Ti Using Mg".JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 138.22(2016):6916-6919.

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