Thermal diffusivity of UO2 up to the melting point

JOURNAL OF NUCLEAR MATERIALS

卷:499

Article

Vlahovic, L.¹  Staicu, D.¹  Kuest, A.¹  Konings, R. J. M.¹ 

[1] European Commiss, Joint Res Ctr Karlsruhe, POB 2340, D-76125 Karlsruhe, Germany

关键词: Uranium dioxide;    Laser heating;    Thermal diffusivity;    Laser-flash;    Nuclear fuel;   

DOI  :  10.1016/j.jnucmat.2017.11.050

来源: Elsevier

【 摘 要 】

The thermal diffusivity of uranium dioxide was measured from 500 to 3060 K with two different set-ups, both based on the laser-flash technique. Above 1600 K the measurements were performed with an advanced laser-flash technique, which was slightly improved in comparison with a former work. In the temperature range 500-2000 K the thermal diffusivity is decreasing, then relatively constant up to 2700 K, and tends to increase by approaching the melting point. The measurements of the thermal diffusivity in the vicinity of the melting point are possible under certain conditions, and are discussed in this paper. (c) 2017 The Authors. Published by Elsevier B.V.

【 授权许可】

Free