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Thermal and Mechanical Properties of Hf Hydrides with Various Hydrogen Content

Published online by Cambridge University Press:  31 January 2011

Ken Kurosaki ,
Masato Ito ,
Yuki Kitano ,
Hiroaki Muta ,
Masayoshi Uno ,
Kenji Konashi  and
Shinsuke Yamanaka
Ken Kurosaki
Affiliation:
[email protected], United States
Masato Ito
Affiliation:
[email protected], Osaka University, Suita, Japan
Yuki Kitano
Affiliation:
[email protected], Osaka University, Suita, Japan
Hiroaki Muta
Affiliation:
[email protected], Osaka University, Suita, Japan
Masayoshi Uno
Affiliation:
[email protected], University of Fukui, Fukui, Japan
Kenji Konashi
Affiliation:
[email protected], Tohoku University, Oarai, Japan
Shinsuke Yamanaka
Affiliation:
[email protected], Osaka University, Suita, Japan
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Abstract

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 thermal and mechanical properties were characterized. In the temperature range from room temperature to around 650 K, the heat capacity and thermal diffusivity of the samples were measured and the thermal conductivity was evacuated. The elastic modulus was calculated from the measured sound velocity. The Vickers hardness was measured at room temperature. Effects of CH and/or temperature on the properties of Hf hydrides were discussed. At room temperature, the thermal conductivity values of the Hf hydrides were 23 Wm−1K−1. The Young's and shear moduli and the Vickers hardness of Hf hydride decreased with increasing CH.

Keywords

nuclear materialsHfthermal conductivity
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1215: Symposium V – Materials Research Needs to Advance Nuclear Energy , 2009 , 1215-V18-02
Copyright
Copyright © Materials Research Society 2010

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