| 快速凝固富钛Ti-V合金的微观组织和储氢性能 |
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| 引用本文： | Suwarno SUWARNO,Jan Ketil SOLBERG,Jan Petter MAEHLEN,Bente KROGH,Bφrre Tore BφRRESEN,Esther OCHOA-FERNANDEZ,Erling RYTTER,Mario WILLIAMS,Roman DENYS,Volodymyr A.YARTYS. 快速凝固富钛Ti-V合金的微观组织和储氢性能[J]. 中国有色金属学会会刊, 2012, 22(8): 1831-1838. DOI: 10.1016/S1003-6326(11)61394-0 |
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| 作者姓名： | Suwarno SUWARNO Jan Ketil SOLBERG Jan Petter MAEHLEN Bente KROGH Bφrre Tore BφRRESEN Esther OCHOA-FERNANDEZ Erling RYTTER Mario WILLIAMS Roman DENYS Volodymyr A.YARTYS |
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| 作者单位： | Department of Materials Science and Engineering,Norwegian University of Science and Technology,NO-7491,Trondheim,Norway;Institute for Energy Technology,P.O.Box 40,NO-2027,Kjeller,Norway;Statoil Research Centre,Rotvoll,N-7005,Trondheim,Norway;University of the Western Cape,Private Bag X17,Bellville,7535,South Africa |
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| 基金项目： | Project “Integrated Process for Hydrogen Production and Separation” supported by Norwegian Research Council and Statoil, Norway |
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| 摘 要： | 研究目的在于优化Ti0.8-0.9V0.2-0.1二元合金的相结构成分、微观组织和储氢性能。该合金主要用于从含有大量一氧化碳的高温气态混合物中吸收氢气。Ti0.8-0.9V0.2-0.1合金中的α-（HCP）和β-（BCC）相在纯氢气中基于氢化作用,形成单相FCC结构的氢化物,此过程与合金的化学成分无关。同步辐射X射线衍射的原位分析表明,在含有氢气和10%一氧化碳的混合气体中,只有β相转变成相应的氢化物。快速凝固（RS）处理细化了Ti0.8V0.2和Ti0.9V0.1合金的晶粒组织,而且,快速凝固处理增加了Ti0.9V0.1合金中的β相,其所占比例是普通熔铸条件下的两倍。扫描电子显微镜（SEM）分析表明,Ti0.9V0.1合金含有片状组织,层片的厚度约为300nm。热脱附谱（TDS）显示,微观组织的细化可以加快氢脱附的动力学过程。
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| 关 键 词： | 储氢 Ti-V合金 快速凝固 同步辐射X射线衍射 一氧化碳 |
| 收稿时间： | 2011-11-10 |
Microstructure and hydrogen storage properties of as-cast and rapidly solidified Ti-rich Ti-V alloys |
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| Suwarno SUWARNO,Jan Ketil SOLBERG,Jan Petter MAEHLEN,Bente KROGH,Børre Tore BØRRESEN,Esther OCHOA-FERNANDEZ,Erling RYTTER,Mario WILLIAMS,Roman DENYS,Volodymyr A. YARTYS. Microstructure and hydrogen storage properties of as-cast and rapidly solidified Ti-rich Ti-V alloys[J]. Transactions of Nonferrous Metals Society of China, 2012, 22(8): 1831-1838. DOI: 10.1016/S1003-6326(11)61394-0 |
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| Authors: | Suwarno SUWARNO Jan Ketil SOLBERG Jan Petter MAEHLEN Bente KROGH Børre Tore BØRRESEN Esther OCHOA-FERNANDEZ Erling RYTTER Mario WILLIAMS Roman DENYS Volodymyr A. YARTYS |
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| Affiliation: | Suwarno SUWARNO1, Jan Ketil SOLBERG1, Jan Petter MAEHLEN2, Bente KROGH3, Bφrre Tore BφRRESEN3, Esther OCHOA-FERNANDEZ3, Erling RYTTER3, Mario WILLIAMS4, Roman DENYS2, Volodymyr A. YARTYS1,2 1. Department of Materials Science and Engineering, Norwegian University of Science and Technology, NO-7491, Trondheim, Norway; 2. Institute for Energy Technology, P.O. Box 40, NO-2027, Kjeller, Norway; 3. Statoil Research Centre, Rotvoll, N-7005, Trondheim, Norway; 4. University of the Western Cape, Private Bag X17, Bellville, 7535, South Africa |
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| Abstract: | The goal of the present work was to optimize the phase-structural composition and microstructure of binary Ti0.8-0.9V0.2-0.1 alloys with respect to their hydrogen sorption properties. Application of these alloys is for hydrogen absorption from gaseous mixtures containing substantial amounts of carbon monoxide (CO) at high temperatures. Irrespective of alloy composition, both α(HCP) and β(BCC) phases in Ti0.8-0.9V0.2-0.1 formed single phase FCC hydrides upon hydrogenation in pure H2. An in situ synchrotron X-ray diffraction study showed that only the β-phase transformed to the corresponding hydride when the alloy was hydrogenated in a mixture of H2+10%CO. Rapid solidification (RS) of the alloy resulted in refined grain sizes both in the Ti0.8V0.2 and Ti0.9V0.1 alloys. Furthermore, RS was found to increase the β-phase fraction in Ti0.9V0.1, being twice larger than that of the as-cast alloy. Ti0.9V0.1 had a platelike microstructure as observed by scanning electron microscopy (SEM), the plates were about 300 nm thick. The microstructure refinement resulted in a faster kinetics of H desorption as observed by temperature desorption spectroscopy (TDS). |
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| Keywords: | hydrogen storage Ti-V alloys rapid solidification synchrotron X-ray diffraction carbon monoxide |
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