High temperature thermal properties of titanium diboride ceramics as divertor materials in fusion reactor

Jun-ichi MATSUSHITA; Yutaka SAWADA; Akira TONEGAWA; Kazuya OGURI; Yoshitake NISHI; Noriyuki INOUE; Yusuke KUBOTA; Nobuaki NODA; Osamu MOTOJIMA

doi:10.2978/jsas.11.4_228

Jun-ichi MATSUSHITA, Yutaka SAWADA, Akira TONEGAWA, Kazuya OGURI, Yoshitake NISHI, Noriyuki INOUE, Yusuke KUBOTA, Nobuaki NODA, Osamu MOTOJIMA

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Keywords: Titanium diboride, Thermal conductivity, Divertor plate, High heat flax, Fusion material

JOURNAL FREE ACCESS

1999 Volume 11 Issue 4 Pages 228-231

DOI https://doi.org/10.2978/jsas.11.4_228

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Abstract

In this study, high temperature thermal properties of hot pressing sintered TiB₂ ceramics was investigated in order to determine the feasibility to the divertor plate of fusion materials. The thermal expansion coefficient was 8.2×10^-6/K in a range of room temperature to 1073K. The thermal diffusivity and specific heat were measured by the laser flash method. The thermal diffusivity and specific heat increased with increasing temperature. The thermal conductivity was 57 to 75W/mK at temperatures from room temperature to 1273K.

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