The new ternary intermetallic NdNiMg5

Hydrogen sorption properties and more

Bassem Ourane, Etienne Gaudin, Yongfeng Lu, Ridha Zouari, Abdelhamid Ben Salah, Jean Louis Bobet

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The hydrogen sorption properties of the new compound NdNiMg5 have been investigated. The compound starts to absorb hydrogen at 573 K under a pressure of 1 MPa. The absorption leads to the decomposition into two binary hydrides MgH2 and NdH2.6, and a ternary hydride Mg2NiH4. The maximum hydrogen sorption capacity reached is 3.2 wt.% and the cycling properties of the mixture decreases quickly due to grain growth. The activation energies for absorption and desorption are estimated to be equal to 14(3) kJ/mol H2 and 110(9) kJ/mol H2, respectively. Preliminary studies of the mechanical properties were also performed. Despite the high content in magnesium, NdNiMg5 exhibits an average microhardness of 210 Hv and a reduced Young Modulus of 9(1) GPa.

Original languageEnglish (US)
Pages (from-to)275-279
Number of pages5
JournalMaterials Research Bulletin
Volume61
DOIs
StatePublished - Jan 1 2015

Fingerprint

sorption
Intermetallics
intermetallics
Sorption
Hydrogen
Hydrides
hydrides
hydrogen
Grain growth
Microhardness
microhardness
Magnesium
magnesium
Desorption
modulus of elasticity
Activation energy
Elastic moduli
desorption
mechanical properties
activation energy

Keywords

  • A. Inorganic compounds
  • C. Electron microscopy
  • D. Crystal structure
  • D. Energy storage

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

The new ternary intermetallic NdNiMg5 : Hydrogen sorption properties and more. / Ourane, Bassem; Gaudin, Etienne; Lu, Yongfeng; Zouari, Ridha; Salah, Abdelhamid Ben; Bobet, Jean Louis.

In: Materials Research Bulletin, Vol. 61, 01.01.2015, p. 275-279.

Research output: Contribution to journalArticle

Ourane, Bassem ; Gaudin, Etienne ; Lu, Yongfeng ; Zouari, Ridha ; Salah, Abdelhamid Ben ; Bobet, Jean Louis. / The new ternary intermetallic NdNiMg5 : Hydrogen sorption properties and more. In: Materials Research Bulletin. 2015 ; Vol. 61. pp. 275-279.
@article{917082fa45a04ca380b692f25407a595,
title = "The new ternary intermetallic NdNiMg5: Hydrogen sorption properties and more",
abstract = "The hydrogen sorption properties of the new compound NdNiMg5 have been investigated. The compound starts to absorb hydrogen at 573 K under a pressure of 1 MPa. The absorption leads to the decomposition into two binary hydrides MgH2 and NdH2.6, and a ternary hydride Mg2NiH4. The maximum hydrogen sorption capacity reached is 3.2 wt.{\%} and the cycling properties of the mixture decreases quickly due to grain growth. The activation energies for absorption and desorption are estimated to be equal to 14(3) kJ/mol H2 and 110(9) kJ/mol H2, respectively. Preliminary studies of the mechanical properties were also performed. Despite the high content in magnesium, NdNiMg5 exhibits an average microhardness of 210 Hv and a reduced Young Modulus of 9(1) GPa.",
keywords = "A. Inorganic compounds, C. Electron microscopy, D. Crystal structure, D. Energy storage",
author = "Bassem Ourane and Etienne Gaudin and Yongfeng Lu and Ridha Zouari and Salah, {Abdelhamid Ben} and Bobet, {Jean Louis}",
year = "2015",
month = "1",
day = "1",
doi = "10.1016/j.materresbull.2014.10.026",
language = "English (US)",
volume = "61",
pages = "275--279",
journal = "Materials Research Bulletin",
issn = "0025-5408",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - The new ternary intermetallic NdNiMg5

T2 - Hydrogen sorption properties and more

AU - Ourane, Bassem

AU - Gaudin, Etienne

AU - Lu, Yongfeng

AU - Zouari, Ridha

AU - Salah, Abdelhamid Ben

AU - Bobet, Jean Louis

PY - 2015/1/1

Y1 - 2015/1/1

N2 - The hydrogen sorption properties of the new compound NdNiMg5 have been investigated. The compound starts to absorb hydrogen at 573 K under a pressure of 1 MPa. The absorption leads to the decomposition into two binary hydrides MgH2 and NdH2.6, and a ternary hydride Mg2NiH4. The maximum hydrogen sorption capacity reached is 3.2 wt.% and the cycling properties of the mixture decreases quickly due to grain growth. The activation energies for absorption and desorption are estimated to be equal to 14(3) kJ/mol H2 and 110(9) kJ/mol H2, respectively. Preliminary studies of the mechanical properties were also performed. Despite the high content in magnesium, NdNiMg5 exhibits an average microhardness of 210 Hv and a reduced Young Modulus of 9(1) GPa.

AB - The hydrogen sorption properties of the new compound NdNiMg5 have been investigated. The compound starts to absorb hydrogen at 573 K under a pressure of 1 MPa. The absorption leads to the decomposition into two binary hydrides MgH2 and NdH2.6, and a ternary hydride Mg2NiH4. The maximum hydrogen sorption capacity reached is 3.2 wt.% and the cycling properties of the mixture decreases quickly due to grain growth. The activation energies for absorption and desorption are estimated to be equal to 14(3) kJ/mol H2 and 110(9) kJ/mol H2, respectively. Preliminary studies of the mechanical properties were also performed. Despite the high content in magnesium, NdNiMg5 exhibits an average microhardness of 210 Hv and a reduced Young Modulus of 9(1) GPa.

KW - A. Inorganic compounds

KW - C. Electron microscopy

KW - D. Crystal structure

KW - D. Energy storage

UR - http://www.scopus.com/inward/record.url?scp=84908242516&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84908242516&partnerID=8YFLogxK

U2 - 10.1016/j.materresbull.2014.10.026

DO - 10.1016/j.materresbull.2014.10.026

M3 - Article

VL - 61

SP - 275

EP - 279

JO - Materials Research Bulletin

JF - Materials Research Bulletin

SN - 0025-5408

ER -