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Microstructural dependence of the thermal and mechanical properties of monazite LnPO4 (Ln=La to Gd)

Abstract : In this work are given some thermal and mechanical properties of monazite, related to the microstructure. This compound is a poor thermal conductive (lambda < 5 W m(-1) K-1), with a thermal expansion in between 9 and 10 x 10(-6) K-1 according to the considered crystallographic direction, and a relatively high specific heat (C-p approximate to 110 J mol(-1) K-1). Mechanical properties of monazite are characteristic of a brittle behavior: bending strength is of about 100 MPa and fracture toughness is close to 1 MPa m(1/2). Porosity plays a large role on both thermal and mechanical properties pointing out the importance of controlling the whole elaboration process.
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https://hal-emse.ccsd.cnrs.fr/emse-00447168
Contributor : Andrée-Aimée Toucas <>
Submitted on : Thursday, January 14, 2010 - 2:35:25 PM
Last modification on : Wednesday, August 5, 2020 - 3:45:52 AM

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Loic Perrière, Damien Bregiroux, Benoît Nait-Ali, Fabienne Audubert, Eric Champion, et al.. Microstructural dependence of the thermal and mechanical properties of monazite LnPO4 (Ln=La to Gd). Journal of the European Ceramic Society, Elsevier, 2007, 27 (10), pp.3207-3213. ⟨10.1016/j.jeurceramsoc.2006.12.005⟩. ⟨emse-00447168⟩

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