Fiber reinforced porous (La1/5Nd1/5Sm1/5Gd1/5Yb1/5)2Zr2O7 ceramics with enhanced compressive strength

De Bao Liu; Bao Lu Shi; Yi Guang Wang; Bao Sheng Xu

doi:10.1111/jace.18612

Fiber reinforced porous (La_1/5Nd_1/5Sm_1/5Gd_1/5Yb_1/5)₂Zr₂O₇ ceramics with enhanced compressive strength

De Bao Liu, Bao Lu Shi, Yi Guang Wang, Bao Sheng Xu^*

^*Corresponding author for this work

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

In this work, we have prepared a novel yttria-stabilized zirconia fiber (YSZ_f)-reinforced (La_1/5Nd_1/5Sm_1/5Gd_1/5Yb_1/5)₂Zr₂O₇ porous ceramics (YSZ_f/(5RE_1/5)₂Zr₂O₇ PCs) through a foam-gelcasting-freeze drying process. The microstructure, phase composition, density, porosity, thermal conductivity, and compressive strength of the as-prepared YSZ_f/(5RE_1/5)₂Zr₂O₇ PCs were systematically investigated. In addition, the high-temperature thermal cycle stability and thermally insulating property of the samples were also tested. The results indicated that the as-synthesized YSZ_f/(5RE_1/5)₂Zr₂O₇ PCs (with 25 wt% YSZ fibers) exhibited high porosity, high compressive strength, low thermal conductivity as well as low thermal cycling shrinkage. This work demonstrated that the added YSZ fiber can remarkably improve the strength of (5RE_1/5)₂Zr₂O₇ PCs with the high porosity, and as-developed YSZ_f/(5RE_1/5)₂Zr₂O₇ PCs would be an excellent candidate for high-temperature thermal insulator materials.

Original language	English
Pages (from-to)	6816-6825
Number of pages	10
Journal	Journal of the American Ceramic Society
Volume	105
Issue number	11
DOIs	https://doi.org/10.1111/jace.18612
Publication status	Published - Nov 2022

Keywords

YSZ fiber
compressive strength
high-entropy rare earth zirconate
porosity
porous ceramics
thermal conductivity

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10.1111/jace.18612

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title = "Fiber reinforced porous (La1/5Nd1/5Sm1/5Gd1/5Yb1/5)2Zr2O7 ceramics with enhanced compressive strength",

abstract = "In this work, we have prepared a novel yttria-stabilized zirconia fiber (YSZf)-reinforced (La1/5Nd1/5Sm1/5Gd1/5Yb1/5)2Zr2O7 porous ceramics (YSZf/(5RE1/5)2Zr2O7 PCs) through a foam-gelcasting-freeze drying process. The microstructure, phase composition, density, porosity, thermal conductivity, and compressive strength of the as-prepared YSZf/(5RE1/5)2Zr2O7 PCs were systematically investigated. In addition, the high-temperature thermal cycle stability and thermally insulating property of the samples were also tested. The results indicated that the as-synthesized YSZf/(5RE1/5)2Zr2O7 PCs (with 25 wt% YSZ fibers) exhibited high porosity, high compressive strength, low thermal conductivity as well as low thermal cycling shrinkage. This work demonstrated that the added YSZ fiber can remarkably improve the strength of (5RE1/5)2Zr2O7 PCs with the high porosity, and as-developed YSZf/(5RE1/5)2Zr2O7 PCs would be an excellent candidate for high-temperature thermal insulator materials.",

keywords = "YSZ fiber, compressive strength, high-entropy rare earth zirconate, porosity, porous ceramics, thermal conductivity",

author = "Liu, {De Bao} and Shi, {Bao Lu} and Wang, {Yi Guang} and Xu, {Bao Sheng}",

note = "Publisher Copyright: {\textcopyright} 2022 The American Ceramic Society.",

year = "2022",

month = nov,

doi = "10.1111/jace.18612",

language = "English",

volume = "105",

pages = "6816--6825",

journal = "Journal of the American Ceramic Society",

issn = "0002-7820",

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number = "11",

}

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T1 - Fiber reinforced porous (La1/5Nd1/5Sm1/5Gd1/5Yb1/5)2Zr2O7 ceramics with enhanced compressive strength

AU - Liu, De Bao

AU - Shi, Bao Lu

AU - Wang, Yi Guang

AU - Xu, Bao Sheng

PY - 2022/11

Y1 - 2022/11

N2 - In this work, we have prepared a novel yttria-stabilized zirconia fiber (YSZf)-reinforced (La1/5Nd1/5Sm1/5Gd1/5Yb1/5)2Zr2O7 porous ceramics (YSZf/(5RE1/5)2Zr2O7 PCs) through a foam-gelcasting-freeze drying process. The microstructure, phase composition, density, porosity, thermal conductivity, and compressive strength of the as-prepared YSZf/(5RE1/5)2Zr2O7 PCs were systematically investigated. In addition, the high-temperature thermal cycle stability and thermally insulating property of the samples were also tested. The results indicated that the as-synthesized YSZf/(5RE1/5)2Zr2O7 PCs (with 25 wt% YSZ fibers) exhibited high porosity, high compressive strength, low thermal conductivity as well as low thermal cycling shrinkage. This work demonstrated that the added YSZ fiber can remarkably improve the strength of (5RE1/5)2Zr2O7 PCs with the high porosity, and as-developed YSZf/(5RE1/5)2Zr2O7 PCs would be an excellent candidate for high-temperature thermal insulator materials.

AB - In this work, we have prepared a novel yttria-stabilized zirconia fiber (YSZf)-reinforced (La1/5Nd1/5Sm1/5Gd1/5Yb1/5)2Zr2O7 porous ceramics (YSZf/(5RE1/5)2Zr2O7 PCs) through a foam-gelcasting-freeze drying process. The microstructure, phase composition, density, porosity, thermal conductivity, and compressive strength of the as-prepared YSZf/(5RE1/5)2Zr2O7 PCs were systematically investigated. In addition, the high-temperature thermal cycle stability and thermally insulating property of the samples were also tested. The results indicated that the as-synthesized YSZf/(5RE1/5)2Zr2O7 PCs (with 25 wt% YSZ fibers) exhibited high porosity, high compressive strength, low thermal conductivity as well as low thermal cycling shrinkage. This work demonstrated that the added YSZ fiber can remarkably improve the strength of (5RE1/5)2Zr2O7 PCs with the high porosity, and as-developed YSZf/(5RE1/5)2Zr2O7 PCs would be an excellent candidate for high-temperature thermal insulator materials.

KW - YSZ fiber

KW - compressive strength

KW - high-entropy rare earth zirconate

KW - porosity

KW - porous ceramics

KW - thermal conductivity

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U2 - 10.1111/jace.18612

DO - 10.1111/jace.18612

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SN - 0002-7820

VL - 105

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JO - Journal of the American Ceramic Society

JF - Journal of the American Ceramic Society

IS - 11

ER -

Fiber reinforced porous (La_1/5Nd_1/5Sm_1/5Gd_1/5Yb_1/5)₂Zr₂O₇ ceramics with enhanced compressive strength

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