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Wang Y, Shao B, Fu B, Zou B, Wang C. Comparative Research on the Thermophysical Properties of Nano-Sized La2(Zr0.7Ce0.3)2O7 Synthesized by Different Routes. NANOMATERIALS 2022; 12:nano12142487. [PMID: 35889711 PMCID: PMC9318493 DOI: 10.3390/nano12142487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 07/05/2022] [Accepted: 07/19/2022] [Indexed: 02/04/2023]
Abstract
La2(Zr0.7Ce0.3)2O7 has been regarded as an ideal candidate for the next generation of thermal barrier coatings (TBCs) due to its prominent superiority. In this paper, the nano-sized La2(Zr0.7Ce0.3)2O7 was synthesized using two different synthetic routes: sol-gel and hydrothermal processes. Various techniques were utilized to assess the differences in the relevant thermophysical properties created by the different synthetic methods. According to the investigations, both samples exhibited pyrochlore structures with an excellent thermal stability. The sample synthesized via the hydrothermal method showed a more uniform particle size and morphology than that obtained through the sol-gel technique. The former also possessed a better sinter-resistance property, a more outstanding TEC (thermal expansion coefficient) and thermal conductivity, and a larger activation energy for crystal growth than the latter. The micro-strain of both samples showed an interesting change as the temperature increased, and 1200 °C was the turning point. Additionally, relative mechanisms were discussed in detail.
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Affiliation(s)
- Yue Wang
- College of Physical Science and Technology, Bohai University, Jinzhou 121013, China; (Y.W.); (B.S.); (B.F.)
| | - Bohuai Shao
- College of Physical Science and Technology, Bohai University, Jinzhou 121013, China; (Y.W.); (B.S.); (B.F.)
| | - Boyan Fu
- College of Physical Science and Technology, Bohai University, Jinzhou 121013, China; (Y.W.); (B.S.); (B.F.)
| | - Binglin Zou
- State Key Laboratory of Rare Earth Resources Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China;
| | - Chunjie Wang
- College of Physical Science and Technology, Bohai University, Jinzhou 121013, China; (Y.W.); (B.S.); (B.F.)
- Correspondence:
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Effects on Phase Evolution of La2O3–ZrO2 Mixed Oxides Prepared Via Sol–Gel Process and its Crystal Growth Behavior. J Inorg Organomet Polym Mater 2017. [DOI: 10.1007/s10904-017-0736-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Wang Q, Cheng X, Li J, Jin H. Hydrothermal synthesis and photocatalytic properties of pyrochlore Sm2Zr2O7 nanoparticles. J Photochem Photobiol A Chem 2016. [DOI: 10.1016/j.jphotochem.2016.01.011] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Dong S, Yu C, Li Y, Li Y, Sun J, Geng X. Controlled synthesis of T-shaped BiVO4 and enhanced visible light responsive photocatalytic activity. J SOLID STATE CHEM 2014. [DOI: 10.1016/j.jssc.2013.12.027] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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