Preparation of Porous Alumina Ceramics by Sacrificial Template Method

Tianli Zhu; Kexiu Wang; Youfa Wang; Bowen Zheng

doi:10.1007/s11595-025-3159-8

Preparation of Porous Alumina Ceramics by Sacrificial Template Method

Tianli Zhu
, Kexiu Wang
, Youfa Wang
, Bowen Zheng

Hankou University
Wuhan University of Technology

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

Abstract

Corn starch was used as a templating agent, and an oxide mixture containing alumina, magnesia, zirconia and yttria was added in the sol-gel state. After slip casting, curing at 85 °C, drying and sintering, high-performance porous alumina ceramics were obtained. The properties of the porous alumina ceramics were analyzed by means of SEM, XRD, flexural strength and porosity. The research findings showed that, when the starch content was 1 wt%, the prepared ceramic mainly consisted of four phases: α-Al₂O₃, MgAl₂O₄, ZrO, and YSZ. The flexural strength reached 157.27 MPa, the flexural strength of the green body was about 3 MPa, and the porosity was around 30%.

Original language	English
Pages (from-to)	1213-1222
Number of pages	10
Journal	Journal Wuhan University of Technology, Materials Science Edition
Volume	40
Issue number	5
DOIs	https://doi.org/10.1007/s11595-025-3159-8
State	Published - Oct 2025
Externally published	Yes

Keywords

flexural strength
porous alumina ceramics
sacrificial template

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10.1007/s11595-025-3159-8

Cite this

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title = "Preparation of Porous Alumina Ceramics by Sacrificial Template Method",

abstract = "Corn starch was used as a templating agent, and an oxide mixture containing alumina, magnesia, zirconia and yttria was added in the sol-gel state. After slip casting, curing at 85 °C, drying and sintering, high-performance porous alumina ceramics were obtained. The properties of the porous alumina ceramics were analyzed by means of SEM, XRD, flexural strength and porosity. The research findings showed that, when the starch content was 1 wt\%, the prepared ceramic mainly consisted of four phases: α-Al2O3, MgAl2O4, ZrO, and YSZ. The flexural strength reached 157.27 MPa, the flexural strength of the green body was about 3 MPa, and the porosity was around 30\%.",

keywords = "flexural strength, porous alumina ceramics, sacrificial template",

author = "Tianli Zhu and Kexiu Wang and Youfa Wang and Bowen Zheng",

note = "Publisher Copyright: {\textcopyright} Wuhan University of Technology and Springer-Verlag GmbH Germany, Part of Springer Nature 2025.",

year = "2025",

month = oct,

doi = "10.1007/s11595-025-3159-8",

language = "英语",

volume = "40",

pages = "1213--1222",

journal = "Journal Wuhan University of Technology, Materials Science Edition",

issn = "1000-2413",

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}

TY - JOUR

T1 - Preparation of Porous Alumina Ceramics by Sacrificial Template Method

AU - Zhu, Tianli

AU - Wang, Kexiu

AU - Wang, Youfa

AU - Zheng, Bowen

N1 - Publisher Copyright: © Wuhan University of Technology and Springer-Verlag GmbH Germany, Part of Springer Nature 2025.

PY - 2025/10

Y1 - 2025/10

N2 - Corn starch was used as a templating agent, and an oxide mixture containing alumina, magnesia, zirconia and yttria was added in the sol-gel state. After slip casting, curing at 85 °C, drying and sintering, high-performance porous alumina ceramics were obtained. The properties of the porous alumina ceramics were analyzed by means of SEM, XRD, flexural strength and porosity. The research findings showed that, when the starch content was 1 wt%, the prepared ceramic mainly consisted of four phases: α-Al2O3, MgAl2O4, ZrO, and YSZ. The flexural strength reached 157.27 MPa, the flexural strength of the green body was about 3 MPa, and the porosity was around 30%.

AB - Corn starch was used as a templating agent, and an oxide mixture containing alumina, magnesia, zirconia and yttria was added in the sol-gel state. After slip casting, curing at 85 °C, drying and sintering, high-performance porous alumina ceramics were obtained. The properties of the porous alumina ceramics were analyzed by means of SEM, XRD, flexural strength and porosity. The research findings showed that, when the starch content was 1 wt%, the prepared ceramic mainly consisted of four phases: α-Al2O3, MgAl2O4, ZrO, and YSZ. The flexural strength reached 157.27 MPa, the flexural strength of the green body was about 3 MPa, and the porosity was around 30%.

KW - flexural strength

KW - porous alumina ceramics

KW - sacrificial template

UR - https://www.scopus.com/pages/publications/105020378473

U2 - 10.1007/s11595-025-3159-8

DO - 10.1007/s11595-025-3159-8

M3 - 文章

AN - SCOPUS:105020378473

SN - 1000-2413

VL - 40

SP - 1213

EP - 1222

JO - Journal Wuhan University of Technology, Materials Science Edition

JF - Journal Wuhan University of Technology, Materials Science Edition

IS - 5

ER -

Preparation of Porous Alumina Ceramics by Sacrificial Template Method

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Keywords

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