Thermomechanical properties of hafnium hydride

Masato Ito, Ken Kurosaki, Hiroaki Muta, Masayoshi Uno, Kenji Konashi, Shinsuke Yamanaka

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


Fine bulk samples of delta-phase Hf hydride with various hydrogen contents (CH) ranging from 1.62 to 1.72 in the atomic ratio (H/Hf) were prepared, and their thermomechanical properties were characterized. At room temperature, the sound velocity and Vickers hardness were measured. The elastic modulus was calculated from the measured sound velocity. In the temperature range from room temperature to 673 K, the thermal expansion was measured by using a dilatometer, and the linear thermal expansion coefficient was calculated. Empirical equations describing the thermomechanical properties of Hf hydride as a function of CH were proposed.

Original languageEnglish
Pages (from-to)156-159
Number of pages4
JournalJournal of Nuclear Science and Technology
Issue number2
Publication statusPublished - 2010


  • Fast reactor
  • Hf hydride
  • Neutron control material
  • Thermal expansion
  • Vickers hardness
  • Young's modulus


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