Effects of magnetic annealing temperature on rate properties of Nd0.75Mg0.25 (Ni0.8Co0.2)3.8 hydrogen storage alloys

Chongchao Pan; Xiaofang Liu; Bai Yang; Ronghai Yu

Effects of magnetic annealing temperature on rate properties of Nd_0.75Mg_0.25 (Ni_0.8Co_0.2)_3.8 hydrogen storage alloys

Chongchao Pan^*
, Xiaofang Liu
, Bai Yang
, Ronghai Yu

^*Corresponding author for this work

Key Laboratory of Precision Opto-Mechatronics Technology (Ministry of Education)

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

Magnetic annealing were carried out for Nd_0.75Mg_0.25 (Ni_0.8Co_0.2)_3.8 hydrogen storage alloys at different temperatures. The electrochemical properties, magnetic properties, phase composition and lattice parameters of alloys were systematically investigated. The results show that magnetic annealing has little influence on phase composition of alloys, which includes Ce₂Ni₇ type (Nd,Mg)₂(Ni,Co)₇ phase and CaCu₅ type NdNi₅ phase. Magnetic annealing results in the orientation of easy magnetization axis along c axis. As the annealing temperature increases, the lattice parameter c is increased, which coincides with the extension of tetrahedral interstitials along c axis. Additionally, the obstacle of transportation for hydrogen proton decreases and the rate properties are improved with the annealing temperature increasing.

Original language	English
Pages (from-to)	134-137
Number of pages	4
Journal	Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume	40
Issue number	1
State	Published - Jan 2011
Externally published	Yes

Keywords

Magnetic annealing
NdMg (NiCo) hydrogen storage alloys
Orientation
Rate properties

Cite this

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title = "Effects of magnetic annealing temperature on rate properties of Nd0.75Mg0.25 (Ni0.8Co0.2)3.8 hydrogen storage alloys",

abstract = "Magnetic annealing were carried out for Nd0.75Mg0.25 (Ni0.8Co0.2)3.8 hydrogen storage alloys at different temperatures. The electrochemical properties, magnetic properties, phase composition and lattice parameters of alloys were systematically investigated. The results show that magnetic annealing has little influence on phase composition of alloys, which includes Ce2Ni7 type (Nd,Mg)2(Ni,Co)7 phase and CaCu5 type NdNi5 phase. Magnetic annealing results in the orientation of easy magnetization axis along c axis. As the annealing temperature increases, the lattice parameter c is increased, which coincides with the extension of tetrahedral interstitials along c axis. Additionally, the obstacle of transportation for hydrogen proton decreases and the rate properties are improved with the annealing temperature increasing.",

keywords = "Magnetic annealing, NdMg (NiCo) hydrogen storage alloys, Orientation, Rate properties",

author = "Chongchao Pan and Xiaofang Liu and Bai Yang and Ronghai Yu",

year = "2011",

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volume = "40",

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journal = "Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering",

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TY - JOUR

T1 - Effects of magnetic annealing temperature on rate properties of Nd0.75Mg0.25 (Ni0.8Co0.2)3.8 hydrogen storage alloys

AU - Pan, Chongchao

AU - Liu, Xiaofang

AU - Yang, Bai

AU - Yu, Ronghai

PY - 2011/1

Y1 - 2011/1

N2 - Magnetic annealing were carried out for Nd0.75Mg0.25 (Ni0.8Co0.2)3.8 hydrogen storage alloys at different temperatures. The electrochemical properties, magnetic properties, phase composition and lattice parameters of alloys were systematically investigated. The results show that magnetic annealing has little influence on phase composition of alloys, which includes Ce2Ni7 type (Nd,Mg)2(Ni,Co)7 phase and CaCu5 type NdNi5 phase. Magnetic annealing results in the orientation of easy magnetization axis along c axis. As the annealing temperature increases, the lattice parameter c is increased, which coincides with the extension of tetrahedral interstitials along c axis. Additionally, the obstacle of transportation for hydrogen proton decreases and the rate properties are improved with the annealing temperature increasing.

AB - Magnetic annealing were carried out for Nd0.75Mg0.25 (Ni0.8Co0.2)3.8 hydrogen storage alloys at different temperatures. The electrochemical properties, magnetic properties, phase composition and lattice parameters of alloys were systematically investigated. The results show that magnetic annealing has little influence on phase composition of alloys, which includes Ce2Ni7 type (Nd,Mg)2(Ni,Co)7 phase and CaCu5 type NdNi5 phase. Magnetic annealing results in the orientation of easy magnetization axis along c axis. As the annealing temperature increases, the lattice parameter c is increased, which coincides with the extension of tetrahedral interstitials along c axis. Additionally, the obstacle of transportation for hydrogen proton decreases and the rate properties are improved with the annealing temperature increasing.

KW - Magnetic annealing

KW - NdMg (NiCo) hydrogen storage alloys

KW - Orientation

KW - Rate properties

UR - https://www.scopus.com/pages/publications/79952778757

M3 - 文章

AN - SCOPUS:79952778757

SN - 1002-185X

VL - 40

SP - 134

EP - 137

JO - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

JF - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

IS - 1

ER -

Effects of magnetic annealing temperature on rate properties of Nd_0.75Mg_0.25 (Ni_0.8Co_0.2)_3.8 hydrogen storage alloys

Abstract

Keywords

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