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Thermodynamic Destabilization of Ti-O Solid Solution by H-2 and Deoxygenation of Ti Using Mg
Zhang, Ying1,2; Fang, Zhigang Zak1; Sun, Pei1; Zhang, Tuoyang1; Xia, Yang1; Zhou, Chengshang1; Huang, Zhe1
2016-06-08
发表期刊JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
ISSN0002-7863
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
DOI10.1021/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
被引频次:12[WOS]   [WOS记录]     [WOS相关记录]
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
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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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