分别应用Uni-Ball-Mill 5和XQM-4变频行星式球磨机将Mg粉和Fe粉在氢气中直接球磨合成三元储氢相Mg2FeH6.采用球磨罐中的氢压降、X射线衍射谱、扫描电镜、热分析、吸放氢测试等测试手段研究了不同球磨方式对纳米晶Mg2FeH6储氢材料的合成结果.结果表明,XQM-4变频行星式球磨机球磨150 h,Mg2FeH6相的产率(质量分数)接近70%;在100 kPa氢压下,380 ℃放氢量为2.66%,粉末呈片状,晶粒在7 nm以下.而采用Uni-Ball-Mill 5球磨机P2方式球磨270 h,Mg2FeH6相的产率仅为39.1%,100 kPa氧压下,350 ℃放氢量为1.15%,粉末呈球状.两者的差别可能源于前一种球磨方式具有更高的球磨合金化效率.
参考文献
| [1] | 马树元,黄丹,郑定山,肖荣军,郭进.Mg2Ni合金及其氢化物的电子结构及成键特性的第一原理计算[J].中国有色金属学报,2007(01):118-123. |
| [2] | 丁福臣;易玉峰.制氢储氢材料技术[M].北京:化学工业出版社,2006:416-427. |
| [3] | R.A. Varin;T. Czujko;Ch. Chiu .Particle size effects on the desorption properties of nanostructured magnesium dihydride (MgH_2) synthesized by controlled reactive mechanical milling (CRMM)[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2006(1/2):356-364. |
| [4] | Zhou DW;Li SL;Varin RA;Peng P;Liu JS;Yang F .Mechanical alloying and electronic simulations of 2Mg-Fe mixture powders for hydrogen storage[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2006(1-2):306-315. |
| [5] | RAMAN S S S;DAVIDSON D J;BOBET J L;SRIVASTAVA O N .Investigations on the synthesis,structural and microstructural characterizations of Mg-based K PtCl type Mg2FeH6 hydrogen storage material prepared by mechanical alloying[J].Journal of Alloys and Compounds,2002,333:282-290. |
| [6] | 乔玉卿,赵敏寿,朱新坚,曹广益.机械合金化制备Mg-Ni合金氢化物电极材料的研究进展[J].无机材料学报,2005(01):33-41. |
| [7] | Huot J.;Akiba E.;Schulz R.;Boily S. .Direct synthesis of Mg2FeH6 by mechanical alloying[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,1998(1/2):306-309. |
| [8] | KENJIRO Y;KOCH C C .The influence of mill energy and temperature on the structure of the TiNi intermetallic after mechanical attrition[J].Journal of Materials Research,1993,8(06):1317-1326. |
| [9] | J.-L. Bobet;F.J. Castro;B. Chevalier .Effects of reactive mechanical milling conditions on the physico-chemical properties of Mg + Cr_2O_3 mixtures[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2004(1/2):205-210. |
| [10] | VARIN R A;LI S L;WRONSKI Z;MOROZOVA O KHOMENKO T .The effect of sequential and continuous high-energy on mechano-chemical synthesis of nanostructured ternary complex Hydride Mg2FeH6[J].Journal of Alloys and Compounds,2004,390:282-296. |
| [11] | VARIN R A;LI S L;CALKA A .Environmental degradation by hydrolysis of nanostructured β-MgH2 hydride synthesized by controlled reactive mechanical milling (CRMM) of Mg[J].Journal of Alloys and Compounds,2004,376:222-231. |
| [12] | S. Li;R.A. Varin;O. Morozova .Controlled mechano-chemical synthesis of nanostructured ternary complex hydride Mg_2FeH_6 under low-energy impact mode with and without pre-milling[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2004(1/2):231-248. |
| [13] | VARIN R A;LI S L;CALKA A .Formation and environmental stability of nanocrystalline and amorphous hydrides in the 2Mg-Fe mixture processed by controlled reactive mechanical milling (CRMA)[J].Journal of Alloys and Compounds,2004,373:270-286. |
| [14] | 王平,张海峰,丁炳哲,胡壮麒.反应球磨中Mg的直接氢化[J].金属学报,2000(10):1118-1120. |
| [15] | HWANG S;NISHIMURA C;MCCORMICK P G .Mechanical milling of magnesium powder[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,2001,318:22-33. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%