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Porous yttria-stabilized zirconia ceramics with low thermal conductivity via a novel foam-gelcasting method

  • Ceramics
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A Correction to this article was published on 03 January 2022

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Abstract

In this work, the preparation of foam-gelcasting was simplified with a copolymer of isobutylene and maleic anhydride (Isobam), avoiding the traditional gelling system including many additives such as monomer, cross-linking agent, initiator and catalyst. Highly porous yttria-stabilized zirconia (YSZ) ceramics with 76.2–84.9% porosity were prepared via foam-gelcasting method using YSZ powder as the raw material, Isobam as the dispersant and gelling agent, triethanolamine lauryl sulfate as the foaming agent and sodium carboxymethyl cellulose as the foam stabilizing agent. The effects of solid loading, the content of foaming agent as well as sintering temperature were investigated. With the increase in solid loading of slurries, lower porosity was obtained, and the compressive strength and thermal conductivity showed a tendency of increase. Porous YSZ ceramics with compressive strength of 0.69–3.66 MPa showed low thermal conductivity in the range of 0.137–0.254 W/(m·K) at room temperature. The as-prepared sample showed good thermal insulating performance at high temperature. The km in GM model was during 0.4–0.7, which indicated the pore structure containing the internal and external porosities. This work provides a facile method for the fabrication of porous YSZ ceramics which can be potentially applied as thermal insulation materials at high temperature.

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Funding

This work was supported by the Basic Research Program of Shenzhen (No. JCYJ20170306155944271), the National Natural Science Foundation of China (Nos. 51672219, 51702259), the China-Poland International Collaboration Fund of National Natural Science Foundation of China (No. 51961135301) and the Fundamental Research Funds for the Central Universities (Nos. 3102019GHJD001, 3102019MS0406). We would like to thank the Analytical & Testing Center of Northwestern Polytechnical University for the XRD, SEM, and other analyses.

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Authors and Affiliations

  1. State Key Laboratory of Solidification Processing, MIIT Key Laboratory of Radiation Detective Material and Device, NPU-QMUL Joint Research Institute of Advanced Materials and Structures (JRI-AMAS), School of Material Science and Engineering, Northwestern Polytechnical University, Xi’an, 710072, China

    Xuanyu Meng, Jie Xu, Jiatong Zhu, Jia Zhao, Zhuolun Li & Feng Gao

  2. Research and Development Institute of Northwestern, Polytechnical University in Shenzhen, Shenzhen, 518057, China

    Xuanyu Meng, Jie Xu & Jiatong Zhu

  3. Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664, Warsaw, Poland

    Emilia Pawlikowska & Mikołaj Szafran

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  1. Xuanyu Meng
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  2. Jie Xu
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  3. Jiatong Zhu
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  4. Jia Zhao
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Correspondence to Jie Xu.

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Meng, X., Xu, J., Zhu, J. et al. Porous yttria-stabilized zirconia ceramics with low thermal conductivity via a novel foam-gelcasting method. J Mater Sci 55, 15106–15116 (2020). https://doi.org/10.1007/s10853-020-04900-3

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  • DOI: https://doi.org/10.1007/s10853-020-04900-3

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