Bulletin of the Chinese Ceramic Society, Volume. 43, Issue 11, 4195(2024)
Preparation and Thermal Expansion Properties of (ZrMg)xY2-2xW3O12 Ceramics
(ZrMg)xY2-2xW3O12 (x=0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9 and 1.0) ceramics were developed with a simple solid state method, and the structure, hygroscopicity and thermal expansion property of ceramics were characterized by X-ray diffraction, Raman spectroscopy, thermal analyzer and thermal dilatometer. The results show that with the increase of Zr4+/Mg2+ content, the hygrosopicity of (ZrMg)xY2-2xW3O12 ceramics decreases obviously, and the coefficient of thermal expansion increases gradually from negative thermal expansion to positive thermal expansion. A near-zero thermal expansion is realized for (ZrMg)0.6Y0.8W3O12 (455~1 050 K, -0.54×10-6 K-1) as x=0.6, and the coefficient of thermal expansion of a, b and c axes are measured to be αa=-1.13×10-6 K-1, αb=1.77×10-6 K-1 and αc=-1.80×10-6 K-1, respectively. The intrinsic volumetric coefficient of thermal expansion αv is -1.21×10-6 K-1.
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WANG Xianli, WANG Haili, XU Kun, DUAN Xiangyang, CHEN Dongxia. Preparation and Thermal Expansion Properties of (ZrMg)xY2-2xW3O12 Ceramics[J]. Bulletin of the Chinese Ceramic Society, 2024, 43(11): 4195
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Received: Mar. 27, 2024
Accepted: Jan. 2, 2025
Published Online: Jan. 2, 2025
The Author Email: Dongxia CHEN (chendx1982@163.com)
CSTR:32186.14.