Nanocrystalline and non-crystalline hydrides synthesized by controlled reactive mechanical alloying/milling of Mg and Mg-X (X = Fe, Co, Mn, B) systems

被引：37

作者：

Varin, RA ^{[1
]}

Li, S

Chiu, C

Guo, L

Morozova, O

Khomenko, T

Wronski, Z

机构：

[1] Univ Waterloo, Dept Mech Engn, Waterloo, ON N2L 3G1, Canada

[2] Cent S Univ, State Key Lab Powder Met, Changsha 410083, Peoples R China

[3] Russian Acad Sci, Semenov Inst Chem Phys, Moscow 119991, Russia

[4] Nat Resources Canada, CANMET, Mat Technol Labs, Ottawa, ON K1A 0G1, Canada

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2005年 / 404卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

hydrogen storage materials; reactive mechanical alloying/milling; non-crystalline hydrides; X-ray diffraction; thermal analysis; calorimetry and temperature programmed desorption; ENERGY IMPACT MODE; MECHANOCHEMICAL SYNTHESIS; COMPLEX; MG2FEH6; ANIONS;

D O I：

10.1016/j.jallcom.2004.12.176

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The results of the mechano-chemical synthesis of hydrides by controlled reactive mechanical alloying/milling (CRMA/CRMM) of Mg, 2Mg-Fe, 2Mg-Co, 3Mg-Co, 3Mg-Mn and Mg-2B systems under hydrogen in the magneto-mill Uni-Ball-Mill 5, are discussed. Mostly nanocrystalline hydrides have been synthesized in all the above systems while non-crystalline (possibly amorphous) hydrides have also been synthesized in the 2Mg-Fe system. Double DSC hydrogen desorption peak is observed for a single-phase beta-MgH(2) hydride and a single desorption peak is observed for a duplex hydride (beta-MgH(2) + Mg(2)FeH(6)). The effects of initial nanograin (crystallite) size (after synthesis by CRMA) and alloy composition on the DSC hydrogen desorption, temperature of beta-MgH(2) and Mg(2)FeH(6) are presented. (c) 2005 Elsevier B.V All rights reserved.

引用

页码：494 / 498

页数：5

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