Microstructures and Hydrogen Storage Characteristics of Nanocrystal/Amorphous Mg<sub>17</sub>Al<sub>12</sub> Alloy Prepared by Ball-Milling

肖学章; 陈立新; 刘广成; 王爽; 李寿权; 王新华; 陈长聘

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Microstructures and Hydrogen Storage Characteristics of Nanocrystal/Amorphous Mg₁₇Al₁₂ Alloy Prepared by Ball-Milling

更新时间：2025-12-08

- Microstructures and Hydrogen Storage Characteristics of Nanocrystal/Amorphous Mg₁₇Al₁₂ Alloy Prepared by Ball-Milling
- Vol. 41, Issue 11, Pages: 1368-1372(2007)
- 作者机构：
  
  浙江大学材料科学与工程学系,杭州,310027
- 作者简介：
- 基金信息：
- DOI：
  CLC： TG139.7
- Online First：10 November 2007，
  
  Published：2007
- 稿件说明：
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肖学章, 陈立新, 刘广成, et al. Microstructures and Hydrogen Storage Characteristics of Nanocrystal/Amorphous Mg₁₇Al₁₂ Alloy Prepared by Ball-Milling[J]. 2007, 41(11): 1368-1372.
DOI：

肖学章, 陈立新, 刘广成, et al. Microstructures and Hydrogen Storage Characteristics of Nanocrystal/Amorphous Mg₁₇Al₁₂ Alloy Prepared by Ball-Milling[J]. 2007, 41(11): 1368-1372. DOI：

摘要

采用镁粉和铝粉为原料

通过高能球磨方法制备了Mg

纳米晶/非晶储氢合金

系统研究了球磨时间对合金微结构和储氢性能的影响.结果表明:球磨时间对Mg

合金的微结构和储氢性能有显著影响

随着球磨时间t从10 h延长到100 h

合金发生从晶态(t≤50 h)到纳米晶态(t=70 h)再到非晶态(t=100 h)的结构转变; 样品的平均颗粒尺寸随着球磨时间的增加先减小后增大; 球磨时间为30、70和100 h后的Mg

合金在350 ℃时的最大储氢量(氢的质量分数)分别为4.03%、4.27%和4.18%

而相同条件下铸态Mg

合金的最大储氢量只有2.85%; 球磨时间为70 h的Mg

纳米晶合金在200、280和320 ℃的储氢量分别为1.07%、3.02%和4.07%; 球磨时间为100 h的Mg

非晶合金在200 ℃时30 min内的吸氢量(氢的质量分数)可达到2.84%

分别为相同条件下纳米晶合金和铸态合金的2.7倍和5.1倍.

Abstract

The nanocrystal/amorphous Mg

hydrogen storage alloy was prepared by ball-milling with Mg and Al powders as raw materials. The influence of milling time on the microstructure and hydrogen storage characteristic of the alloy was investigated. The results show that the phase structure and hydrogen storage characteristic of the Mg

alloy are affected greatly by the milling

time. As the milling time(t)increases the average particle size of the sample decreases first and then increases

the alloy phase structure evolves from crystalline(t≤50 h)to nanocrystal(t=70 h)

and then to amorphous(t=100 h). The maximum hydrogen storage capacities of the Mg

alloy ball-milled for 30 h

70 h and 100 h are 4.03%

4.27% and 4.18% at 350 ℃

respectively. The hydrogen storage capacities of the nanocrystal Mg

(t=70 h)alloy are 1.07% at 200 ℃

3.02% at 280 ℃

and 4.07% at 320 ℃

respectively. The hydrogen capacities of the Mg

amorphous alloy(t=100 h)is 2.84% absorbed in 30 min at 200 ℃

which is 2.7 times that of nanocrystal alloy and 5.1 times that of as-cast alloy.

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references

Zeppelin F, Reule H, Hirscher M.金属氢化物的性质与应用 [M]. 吴永宽,苗艳秋,译.北京: 化学工业出版社, 1990:339-340.

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Microstructures and Hydrogen Storage Characteristics of Nanocrystal/Amorphous Mg17Al12 Alloy Prepared by Ball-Milling

DOI：

摘要

Abstract

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Microstructures and Hydrogen Storage Characteristics of Nanocrystal/Amorphous Mg₁₇Al₁₂ Alloy Prepared by Ball-Milling