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

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

Research output: Contribution to journalArticlepeer-review

38 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)279-283
Number of pages5
JournalJournal of Alloys and Compounds
Volume280
Issue number1-2
DOIs
Publication statusPublished - 1998 Oct 23
Externally publishedYes

Keywords

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

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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