Cobalt- and copper-substitution effects on thermal stabilities and hydriding properties of amorphous MgNi

K. Ikeda; S. Orimo; A. Züttel; L. Schlapbach; H. Fujii

doi:10.1016/S0925-8388(98)00710-5

Cobalt- and copper-substitution effects on thermal stabilities and hydriding properties of amorphous MgNi

K. Ikeda, S. Orimo, A. Züttel, L. Schlapbach, H. Fujii

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41 Citations (Scopus)

Abstract

Amorphous (a-)Mg(Ni_1-xT_x) with T=Co and Cu were formed by mechanical alloying in the composition range x=0-0.5. The crystallization temperatures increase/decrease by Co/Cu substitution, while the enthalpies of amorphous formation are little changed by substitution. On the other hand, the p-c isotherms indicate that the hydrogen-site energies become partially unstable with substitution. The relation between the enthalpy of amorphous alloy formation and subsequent hydride formation is discussed quantitatively on the basis of thermal analysis and the rule of reversed stability.

Original language	English
Pages (from-to)	279-283
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	280
Issue number	1-2
DOIs	https://doi.org/10.1016/S0925-8388(98)00710-5
Publication status	Published - 1998 Oct 23

Keywords

Amorphous alloys
Enthalpy of formation
Magnesium-nickel alloys
Mechanical alloying
Substitution

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10.1016/S0925-8388(98)00710-5

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title = "Cobalt- and copper-substitution effects on thermal stabilities and hydriding properties of amorphous MgNi",

abstract = "Amorphous (a-)Mg(Ni1-xTx) with T=Co and Cu were formed by mechanical alloying in the composition range x=0-0.5. The crystallization temperatures increase/decrease by Co/Cu substitution, while the enthalpies of amorphous formation are little changed by substitution. On the other hand, the p-c isotherms indicate that the hydrogen-site energies become partially unstable with substitution. The relation between the enthalpy of amorphous alloy formation and subsequent hydride formation is discussed quantitatively on the basis of thermal analysis and the rule of reversed stability.",

keywords = "Amorphous alloys, Enthalpy of formation, Magnesium-nickel alloys, Mechanical alloying, Substitution",

author = "K. Ikeda and S. Orimo and A. Z{\"u}ttel and L. Schlapbach and H. Fujii",

note = "Funding Information: We sincerely acknowledge Dr. E. Akiba, Mr. Y. Tsushio and Mr. K. Funaki for valuable comments and suggestions. Part of this work was supported financially by the New Energy and Industrial Technology Development Organization (NEDO) as an International Collaboration Work Project for New Materials. ",

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T1 - Cobalt- and copper-substitution effects on thermal stabilities and hydriding properties of amorphous MgNi

AU - Ikeda, K.

AU - Orimo, S.

AU - Züttel, A.

AU - Schlapbach, L.

AU - Fujii, H.

N1 - Funding Information: We sincerely acknowledge Dr. E. Akiba, Mr. Y. Tsushio and Mr. K. Funaki for valuable comments and suggestions. Part of this work was supported financially by the New Energy and Industrial Technology Development Organization (NEDO) as an International Collaboration Work Project for New Materials.

PY - 1998/10/23

Y1 - 1998/10/23

N2 - Amorphous (a-)Mg(Ni1-xTx) with T=Co and Cu were formed by mechanical alloying in the composition range x=0-0.5. The crystallization temperatures increase/decrease by Co/Cu substitution, while the enthalpies of amorphous formation are little changed by substitution. On the other hand, the p-c isotherms indicate that the hydrogen-site energies become partially unstable with substitution. The relation between the enthalpy of amorphous alloy formation and subsequent hydride formation is discussed quantitatively on the basis of thermal analysis and the rule of reversed stability.

AB - Amorphous (a-)Mg(Ni1-xTx) with T=Co and Cu were formed by mechanical alloying in the composition range x=0-0.5. The crystallization temperatures increase/decrease by Co/Cu substitution, while the enthalpies of amorphous formation are little changed by substitution. On the other hand, the p-c isotherms indicate that the hydrogen-site energies become partially unstable with substitution. The relation between the enthalpy of amorphous alloy formation and subsequent hydride formation is discussed quantitatively on the basis of thermal analysis and the rule of reversed stability.

KW - Amorphous alloys

KW - Enthalpy of formation

KW - Magnesium-nickel alloys

KW - Mechanical alloying

KW - Substitution

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JO - Journal of Alloys and Compounds

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ER -

Cobalt- and copper-substitution effects on thermal stabilities and hydriding properties of amorphous MgNi

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Keywords

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