Thermodynamic properties of Mg 2.0Ni hydrides

Toshiro Kuji, Hiroaki Nakano, Tatsuhiko Aizawa

Research output: Chapter in Book/Report/Conference proceedingChapter

6 Citations (Scopus)

Abstract

Thermodynamic properties of hydrides of Mg 2.0Ni alloy produced by bulk mechanical alloying were determined from the pressure-composition (PC) isotherms over the temperatures from 623 to 423 K. In-situ X-ray diffraction studies indicated the hydride formation is accompanied with structural change of Mg 2.0Ni host lattice. The van't Hoff plots for the plateau pressures on isotherms clearly indicated the existence of the structural transformation of the hydride at around 525 K. It is believed that the transformation corresponds to the order/disorder transformation in the hydrogen sublattice. In this paper the difference in the thermodynamic properties between the high and low temperature hydrides will be discussed in relation to the hydrogen order/disorder phenomena presumed by studies on structure of Mg 2.0Ni hydrides.

Original languageEnglish
Title of host publicationMaterials Science Forum
PublisherTrans Tech Publ
Pages311-314
Number of pages4
Volume350
Publication statusPublished - 2000
Externally publishedYes
EventProceedings of the 1st Nagaoka International Workshop on Magnesium Platform Science and Technology 2000 - Nagaoka, Jpn
Duration: 2000 Jul 272000 Jul 29

Other

OtherProceedings of the 1st Nagaoka International Workshop on Magnesium Platform Science and Technology 2000
CityNagaoka, Jpn
Period00/7/2700/7/29

Fingerprint

Hydrides
Thermodynamic properties
Order disorder transitions
Isotherms
Hydrogen
Mechanical alloying
X ray diffraction
Temperature
Chemical analysis

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Kuji, T., Nakano, H., & Aizawa, T. (2000). Thermodynamic properties of Mg 2.0Ni hydrides In Materials Science Forum (Vol. 350, pp. 311-314). Trans Tech Publ.

Thermodynamic properties of Mg 2.0Ni hydrides . / Kuji, Toshiro; Nakano, Hiroaki; Aizawa, Tatsuhiko.

Materials Science Forum. Vol. 350 Trans Tech Publ, 2000. p. 311-314.

Research output: Chapter in Book/Report/Conference proceedingChapter

Kuji, T, Nakano, H & Aizawa, T 2000, Thermodynamic properties of Mg 2.0Ni hydrides in Materials Science Forum. vol. 350, Trans Tech Publ, pp. 311-314, Proceedings of the 1st Nagaoka International Workshop on Magnesium Platform Science and Technology 2000, Nagaoka, Jpn, 00/7/27.
Kuji T, Nakano H, Aizawa T. Thermodynamic properties of Mg 2.0Ni hydrides In Materials Science Forum. Vol. 350. Trans Tech Publ. 2000. p. 311-314
Kuji, Toshiro ; Nakano, Hiroaki ; Aizawa, Tatsuhiko. / Thermodynamic properties of Mg 2.0Ni hydrides Materials Science Forum. Vol. 350 Trans Tech Publ, 2000. pp. 311-314
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