|کد مقاله||کد نشریه||سال انتشار||مقاله انگلیسی||ترجمه فارسی||نسخه تمام متن|
|1497994||1510877||2017||5 صفحه PDF||سفارش دهید||دانلود رایگان|
The RETaO4 ceramics with low-thermal conductivity were fabricated using a solid-state reaction. The phase composition and microstructures of high-temperature RETaO4 (RE = Nd, Eu, Gd, Dy, Er, Yb, Lu) ceramics were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) and Raman spectroscopy. The RETaO4 ceramics had lower thermal conductivity (1.38 to 1.94 W·m− 1·K-1 at 800 °C) than 7-8YSZ (2.37 and 2.47 W·m− 1·K− 1 at 800 °C, respectively). The porosity significantly affected the thermal conductivity of RETaO4 ceramics. The RETaO4 ceramics also had lower Vickers hardness than 8YSZ, which suggests that RETaO4 has better fracture toughness and thermal tolerance.
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Journal: Scripta Materialia - Volume 126, 1 January 2017, Pages 24–28