[1]汪洪波,谢志雄,周敏,等.原位产氢用铝合金的性能研究[J].中国材料进展,2020,(12):974-980.[doi:10.7502/j.issn.1674-3962.201908031]
　WANG Hongbo,XIE Zhixiong,ZHOU Min,et al.Research on Properties of Al Alloy for In-Situ Hydrogen Production[J].MATERIALS CHINA,2020,(12):974-980.[doi:10.7502/j.issn.1674-3962.201908031]
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原位产氢用铝合金的性能研究()
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中国材料进展[ISSN:1674-3962/CN:61-1473/TG]

卷:
期数:
2020年第12期
页码:
974-980
栏目:
出版日期:
2020-12-30

文章信息/Info

Title:
Research on Properties of Al Alloy for In-Situ Hydrogen Production
文章编号:
1674-3962(2020)12-0974-07
作者:
汪洪波1; 2; 谢志雄1; 2; 周敏1; 2; 许章华1; 2; 陈晨1; 2; 董仕节1; 2; 黄海军3
（1. 湖北工业大学 绿色轻工材料湖北省重点实验室， 湖北 武汉 430068）（2. 湖北工业大学材料与化学工程学院， 湖北 武汉 430068）（3 上海交通大学 金属基复合材料国家重点实验室， 上海 200240）
Author(s):
WANG Hongbo1; 2;  XIE Zhixiong1; 2;  ZHOU Min1; 2;  XU Zhanghua1; 2;  CHEN Chen1; 2;  DONG Shijie1; 2;  HUANG Haijun3
(1. Hubei Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology, Wuhan 430068, China) (2. School of Materials and Chemical Engineering, Hubei University of Technology, Wuhan 430068, China) (3. The State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China)
关键词:
AlTi5B; 铝合金; 氢气; 水; 原位产氢
Keywords:
AlTi5B;  Al alloy;  hydrogen;  water;  in-situ hydrogen production
分类号:
TK91
DOI:
10.7502/j.issn.1674-3962.201908031
文献标志码:
A
摘要:
利用熔铸法制备了一种原位产氢用高反应活性的铝合金。结果表明，添加适量的AlTi5B能显著提高Al-3Ga-3In-3Sn铝合金水解产氢性能。反应温度为20 ℃时，1 g Al-3Ga-3In-3Sn铝合金水解反应230 min，产氢量为980 mL，转化率为79.3%；而1 g Al-3Ga-3In-3Sn-0.1%AlTi5B铝合金（合金名称中百分数为质量百分数，下同）反应230 min，产氢量达1200 mL，转化率达97.1%。随着水解温度的升高，铝合金产氢性能进一步提升。AlTi5B促进Al-3Ga-3In-3Sn铝合金水解产氢性能提升的原因可主要归结为以下3个因素：一是加入AlTi5B后，铝晶粒得到了显著细化，铝晶粒平均尺寸由原来的70 μm的柱状晶变为30 μm的等轴晶，晶界面积大幅度增加，Ga-In-Sn共晶合金（GIS）晶界相体积分数增加；二是AlTi5B的添加使Al3Ga-3In-3Sn-0.1%AlTi5B铝合金晶界形成低熔点的GIS相，当铝合金的水解温度高于GIS相的熔点时，GIS相变为液态，不仅为铝原子与水的反应提供了通道，而且还保护了铝原子不被氧化，进而促进了铝合金与水的反应；三是AlTi5B的添加进一步降低了铝合金的开路电压，增加了铝合金活性，促进了铝合金与水的反应。
Abstract:
A highly activated aluminum alloy for portable in-situ hydrogen production was prepared using melt-casting method. The results showed that the addition of a proper amount of AlTi5B to Al-3Ga-3In-3Sn aluminum alloy can significantly improve the hydrogen production performance of aluminum alloy. When the water temperature is 20 ℃, 1 g Al-3Ga-3In-3Sn aluminum alloy reacts for 230 min to produce 980 mL of hydrogen and get a conversion rate of 79.3%, while 1 g Al-3Ga-3In-3Sn-0.1%AlTi5B aluminum alloy reacts 230 min, hydrogen production is 1200 mL, and the conversion rate is 97.1%. The reason that the hydrogen production properties of Al-3Ga-3In-3Sn alloy are improved can be ascribed to the following three factors. Firstly, with adding AlTi5B, the average grain sizes of the aluminum alloy are refined from columnar crystals with an average size of 70 μm to equiaxed crystals with an average size of 30 μm. The grain boundary areas increase significantly， which results in the increase of volume fraction of Ga-In-Sn eutectic alloy (GIS) phase. Secondly, a low melting point GIS grain boundary phase was present in Al-3Ga-3In-3Sn-0.1% AlTi5B due to the addition of AlTi5B. When the reaction temperature of the aluminum alloy is higher than the melting point of the GIS phase, the GIS phase changes to the liquid state. The liquid GIS phases not only provide a channel for the reaction of aluminum atoms with water, but also protect the aluminum atoms from oxidation, thereby promoting the reaction of aluminum alloy and water. Thirdly, the open circuit voltage of aluminum alloy decreased with adding 0.1% AlTi5B, which indicates that the activity of Al-3Ga-3In-3Sn-0.1% AlTi5B alloy is improved. The reduction of open circuit voltage is beneficial to the reaction of aluminum alloy with water.

备注/Memo

备注/Memo:
收稿日期：2019-08-20修回日期：2019-11-27 基金项目：国家自然科学基金项目（51771071）第一作者：汪洪波，男，1993年生，硕士研究生 通讯作者：谢志雄，男，1976年生，讲师，硕士生导师， Email: xzx@hbut.edu.cn
更新日期/Last Update: 2020-12-01