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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
Source PublicationJOURNAL OF THE AMERICAN CHEMICAL SOCIETY
ISSN0002-7863
Volume138Issue:22Pages:6916-6919
AbstractReactive 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.
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1021/jacs.6b00845
Indexed BySCI
Language英语
WOS KeywordHYDROGEN SOLUBILITY ; TITANIUM-DIOXIDE ; CHEMICAL PATHWAY ; REDUCTION ; OXYGEN ; CALCIUM ; ALLOYS ; VANADIUM ; METAL
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
Funding OrganizationAdvanced Research Projects Agency - Energy (ARPA-E) of the US Department of Energy (DOE)(DE-AR0000420)
WOS IDWOS:000377643300003
Citation statistics
Cited Times:17[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/21146
Collection研究所(批量导入)
Affiliation1.Univ Utah, Dept Met Engn, Salt Lake City, UT 84112 USA
2.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China
Recommended Citation
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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