Synthesis, mechanical properties and thermal conductivity of GdTaO4
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Faculty of Material Science and Engineering,Kunming University of Science and Technology
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Abstract:
In order to search the more excellent thermal barrier coating materials, the monoclinic GdTaO4 ceramics are synthesized by solid-phase reaction. The microstructure is analyzed. The results of first-principles calculations indicate that the Young’s modulus along [100] crystallographic orientation is triple as large as that along [010] and [001] crystallographic orientation. The measured thermal conductivity is 1.70 W.m-1.K-1at 800℃ in experiment, which is lower than the thermal conductivities of 7-8YSZ (2.37-2.47 W.m-1.K-1). The GdTaO4 is a promising thermal barrier coating material.
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[Chong XiaoYu, Wang Jun, Jiang YeHua, Feng Jing. Synthesis, mechanical properties and thermal conductivity of GdTaO4[J]. Rare Metal Materials and Engineering,2019,48(4):1179~1182.] DOI:[doi]