Structure and hydrogen absorption property of Mg2Ni-Ti alloy powders prepared by mechanical alloying

C. K. Lin; C. K. Wang; H. C. Lin; P. Y. Lee

doi:10.4028/www.scientific.net/JMNM.24-25.419

Structure and hydrogen absorption property of Mg2Ni-Ti alloy powders prepared by mechanical alloying

C. K. Lin, C. K. Wang, H. C. Lin, P. Y. Lee

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

Abstract

In the present study, pure Mg, Ni, and Ti powder mixtures were mechanically alloyed as compositions of (Mg₂Ni)_100-xTi_x (x=0, 2.5, 5, 7.5 or 10 respectively). The structure evolution of as-milled powders were examined by X-ray diffraction and synchrotron X-ray absorption spectroscopy. For all compositions investigated, nanocrystalline (Mg ₂Ni)_100-xTi_x alloy powders were synthesized at the end of milling. The hydrogen absorption properties of the 15h as-milled powders were evaluated by a Sieverts type apparatus at a temperature of 300, 325 and 350°C respectively. Improvement of the hydrogen absorption properties was observed with the titanium additions. At a temperature of 350°C and a H₂ pressure of 50 atm, the (Mg₂Ni)₉₅Tis as-milled powders exhibited a maximum hydrogen absorption value and reversible content of 3.88 and 3.01 wt.% respectively.

Original language	English
Pages (from-to)	419-422
Number of pages	4
Journal	Journal of Metastable and Nanocrystalline Materials
Volume	24-25
DOIs	https://doi.org/10.4028/www.scientific.net/JMNM.24-25.419
Publication status	Published - 2005
Externally published	Yes

Keywords

EXAFS
Hydrogen absorption
Mechanical alloying

ASJC Scopus subject areas

Materials Science(all)
Physical and Theoretical Chemistry
Condensed Matter Physics

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10.4028/www.scientific.net/JMNM.24-25.419

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title = "Structure and hydrogen absorption property of Mg2Ni-Ti alloy powders prepared by mechanical alloying",

abstract = "In the present study, pure Mg, Ni, and Ti powder mixtures were mechanically alloyed as compositions of (Mg2Ni)100-xTix (x=0, 2.5, 5, 7.5 or 10 respectively). The structure evolution of as-milled powders were examined by X-ray diffraction and synchrotron X-ray absorption spectroscopy. For all compositions investigated, nanocrystalline (Mg 2Ni)100-xTix alloy powders were synthesized at the end of milling. The hydrogen absorption properties of the 15h as-milled powders were evaluated by a Sieverts type apparatus at a temperature of 300, 325 and 350°C respectively. Improvement of the hydrogen absorption properties was observed with the titanium additions. At a temperature of 350°C and a H2 pressure of 50 atm, the (Mg2Ni)95Tis as-milled powders exhibited a maximum hydrogen absorption value and reversible content of 3.88 and 3.01 wt.% respectively.",

keywords = "EXAFS, Hydrogen absorption, Mechanical alloying",

author = "Lin, {C. K.} and Wang, {C. K.} and Lin, {H. C.} and Lee, {P. Y.}",

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language = "English",

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TY - JOUR

T1 - Structure and hydrogen absorption property of Mg2Ni-Ti alloy powders prepared by mechanical alloying

AU - Lin, C. K.

AU - Wang, C. K.

AU - Lin, H. C.

AU - Lee, P. Y.

PY - 2005

Y1 - 2005

N2 - In the present study, pure Mg, Ni, and Ti powder mixtures were mechanically alloyed as compositions of (Mg2Ni)100-xTix (x=0, 2.5, 5, 7.5 or 10 respectively). The structure evolution of as-milled powders were examined by X-ray diffraction and synchrotron X-ray absorption spectroscopy. For all compositions investigated, nanocrystalline (Mg 2Ni)100-xTix alloy powders were synthesized at the end of milling. The hydrogen absorption properties of the 15h as-milled powders were evaluated by a Sieverts type apparatus at a temperature of 300, 325 and 350°C respectively. Improvement of the hydrogen absorption properties was observed with the titanium additions. At a temperature of 350°C and a H2 pressure of 50 atm, the (Mg2Ni)95Tis as-milled powders exhibited a maximum hydrogen absorption value and reversible content of 3.88 and 3.01 wt.% respectively.

AB - In the present study, pure Mg, Ni, and Ti powder mixtures were mechanically alloyed as compositions of (Mg2Ni)100-xTix (x=0, 2.5, 5, 7.5 or 10 respectively). The structure evolution of as-milled powders were examined by X-ray diffraction and synchrotron X-ray absorption spectroscopy. For all compositions investigated, nanocrystalline (Mg 2Ni)100-xTix alloy powders were synthesized at the end of milling. The hydrogen absorption properties of the 15h as-milled powders were evaluated by a Sieverts type apparatus at a temperature of 300, 325 and 350°C respectively. Improvement of the hydrogen absorption properties was observed with the titanium additions. At a temperature of 350°C and a H2 pressure of 50 atm, the (Mg2Ni)95Tis as-milled powders exhibited a maximum hydrogen absorption value and reversible content of 3.88 and 3.01 wt.% respectively.

KW - EXAFS

KW - Hydrogen absorption

KW - Mechanical alloying

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JO - Journal of Metastable and Nanocrystalline Materials

JF - Journal of Metastable and Nanocrystalline Materials

ER -

Structure and hydrogen absorption property of Mg2Ni-Ti alloy powders prepared by mechanical alloying

Abstract

Keywords

ASJC Scopus subject areas

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