Effect of Sm content on activation capability and hydrogen storage performances of TiFe alloy

被引：30
作者：
Zhang, Yanghuan [1 ,3 ]
Shang, Hongwei [2 ]
Gao, Jinliang [4 ]
Zhang, Wei [3 ]
Wei, Xin [3 ]
Yuan, Zeming [1 ]
机构：
[1] Inner Mongolia Univ Sci & Technol, Key Lab Integrated Exploitat Baiyun Obo Multimet, Baotou 014010, Peoples R China
[2] Anyang Normal Univ, Sch Phys & Elect Engn, Anyang 455000, Peoples R China
[3] Cent Iron & Steel Res Inst, Dept Funct Mat Res, 76 Xueyuannan Rd, Beijing 100081, Peoples R China
[4] Weishan Cisri Rare Earth Mat Co Ltd, Jining 277600, Peoples R China
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2021年 / 46卷 / 48期
基金：
中国国家自然科学基金;
关键词：
TiFe alloy; Sm addition; Hydrogen storage; Activation property; Kinetics; HIGH-PRESSURE TORSION; COMBUSTION SYNTHESIS; KINETICS; MN; FE; MICROSTRUCTURE; TEMPERATURE; ABSORPTION; DESORPTION; DEPENDENCE;
D O I：
10.1016/j.ijhydene.2021.05.017
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：
Element substitution is an efficient method to enhance the activation property of TiFe alloys. In this paper, Zr, Mn and Ni were utilized to replace Fe in the alloy partially, and different content rare earth Sm substitute Ti in the alloy. The alloys with nominal compositions of Ti1.1-xFe0.6Ni0.1Zr0.1Mn0.2Smx (x 1/4 0-0.08) were made through vacuum induction melting. The microstructure, composition and hydrogen storage property of alloys were measured in detail by X-ray diffraction, scanning electron microscope, high resolution transmission electron microscopy and automatically Sievert apparatus. The results reveal that the as-cast alloys contain TiFe as major phase and Ti2Fe as secondary phase. Sm addition refines the grain of alloys obviously. All alloys have good activation properties and can be completely activated without any heat treatment. The activation performance can be further improved by partially replacing Ti with Sm, and the incubation period of activation can be shortened greatly. (c) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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页码：24517 / 24530
页数：14
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