Grain refinement and Al-water reactivity of Al-Ga-In-Sn alloys

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	Grain refinement and Al-water reactivity of Al-Ga-In-Sn alloys
	Du, B. D.; Wang, W.; Chen, W.; Chen, D. M.; Yang, K.; Wang, W; Chen, DM (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China.
刊名	PERGAMON-ELSEVIER SCIENCE LTD
	2017-08-24
卷号	42 期号:34 页码:21586-21596
关键词	Al Alloy Grain Refinement Reactivity Hydrogen Generation Rate Hydrogen Yield
ISSN号	0360-3199
英文摘要	Al-Ga-In-Sn alloys were prepared by using traditional casting metallurgy method with different additions of Al-5Ti-1B grain refiner. Their microstructures were investigated by means of X-ray diffraction (XRD) and scanning electron microscope (SEM) with energy dispersed X-ray (EDX). The Al grains of alloys are refined significantly from 129 mu m to 57 mu m with increasing Ti content from 0.03 wt% to 0.24 wt%. Many thin dendrites that are a few micrometers thick are observed within Al grains. Al-water reactivities were performed under different water temperatures. The alloy with Ti content of 0.12 wt% shows the maximum H-2 generation rate under different water temperatures, which is above 5 times of Ti-free alloy. The H-2 yields of alloys drop from 87% to 30% with rising Ti content from 0.03 wt% to 0.24 wt% at the water temperature of 30 degrees C, but they rise to about 90% when the water temperature is above 50 degrees C. The growth mechanism of alloys and the effect of grain refinement on Al-water re activities are discussed. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.; Al-Ga-In-Sn alloys were prepared by using traditional casting metallurgy method with different additions of Al-5Ti-1B grain refiner. Their microstructures were investigated by means of X-ray diffraction (XRD) and scanning electron microscope (SEM) with energy dispersed X-ray (EDX). The Al grains of alloys are refined significantly from 129 mu m to 57 mu m with increasing Ti content from 0.03 wt% to 0.24 wt%. Many thin dendrites that are a few micrometers thick are observed within Al grains. Al-water reactivities were performed under different water temperatures. The alloy with Ti content of 0.12 wt% shows the maximum H-2 generation rate under different water temperatures, which is above 5 times of Ti-free alloy. The H-2 yields of alloys drop from 87% to 30% with rising Ti content from 0.03 wt% to 0.24 wt% at the water temperature of 30 degrees C, but they rise to about 90% when the water temperature is above 50 degrees C. The growth mechanism of alloys and the effect of grain refinement on Al-water re activities are discussed. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
学科主题	Chemistry, Physical ; Electrochemistry ; Energy & Fuels
语种	英语
资助机构	National Science Foundation of China [51171201]; National Basic Research Program of China [2010CB631305]
公开日期	2018-01-10
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/79141]
专题	金属研究所_中国科学院金属研究所
通讯作者	Wang, W; Chen, DM (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China.
推荐引用方式 GB/T 7714	Du, B. D.,Wang, W.,Chen, W.,et al. Grain refinement and Al-water reactivity of Al-Ga-In-Sn alloys[J]. PERGAMON-ELSEVIER SCIENCE LTD,2017,42(34):21586-21596.
APA	Du, B. D..,Wang, W..,Chen, W..,Chen, D. M..,Yang, K..,...&Chen, DM .(2017).Grain refinement and Al-water reactivity of Al-Ga-In-Sn alloys.PERGAMON-ELSEVIER SCIENCE LTD,42(34),21586-21596.
MLA	Du, B. D.,et al."Grain refinement and Al-water reactivity of Al-Ga-In-Sn alloys".PERGAMON-ELSEVIER SCIENCE LTD 42.34(2017):21586-21596.