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

sacrificial template / porous alumina ceramics / flexural strength

References

[1] Kapustin R D, Uvarov V I, Kirillov A O, et al.. Highly Porous Ceramic Materials Based on Coarse-Dispersed α-Al₂O₃[J]. Inorganic Materials: Applied Research, 2024, 15(5): 1537-1543

[2] Hu H, Zhong H, Zhang B. Fabricating Porous Ceramic Materials via Phase Separations in Blends of Cellulose Acetate and Ceramic Nanoparticles[J]. Journal of the American Ceramic Society, 2022, 105(8): 5 461-5 471

[3] Huang W, Wu X, Lin Z, et al.. Preparation Methods and Application Progress of Porous Ceramic Materials[J]. Shandong Chemical Industry, 2024, 53(09): 106-109

[4] Yu H, Liang Shuai S, Li J, et al.. Research Progress on Preparation Methods of Zirconia Porous Ceramics[J]. Material Review, 2023, 37(13): 85-94

[5] Zhang H, Liu H, Zhu M, et al.. Selective Microwave Absorption of SiC–Si₃N₄ Porous Ceramics Prepared by Sacrificial Template Method[J]. Ceramics International, 2023, 49(16): 27 604-27 613

[6] Cheng P, He X, Wang B, et al.. Preparation of Al₂O₃ Ceramics using Paulownia Leaves as Templates and Their Adsorption Photocatalytic Properties[J]. Functional Materials, 2022, 53(11): 11 177-11 118

[7] Linnéa A, Bergstr M L. Gas-filled Microspheres as An Expandable Sacrificial Template for Direct Casting of Complex-shaped Macroporous Ceramics[J]. Journal of the European Ceramic Society, 2008, 28(15): 2 815-2 821

[8] Claro A M, Caroline C A, Santos K S D, et al.. Regenerated Cellulose Sponge as Sacrificial Template for the Synthesis of Three-Dimensional Porous Alumina-silica Scaffold for Tissue Engineering[J]. Journal of Sol-Gel Science and Technology, 2023, 107(1): 83-95

[9] Zhang M, Li X, Zhang M, et al.. High-strength Macro-porous Alumina Ceramics with Regularly Arranged Pores Produced by Gel-casting and Sacrificial Template Methods[J]. Journal of Materials Science, 2019, 54(14): 10 119-10 129

[10] Li L, Du H, Liu J, et al.. Microstructure and Mechanical Properties of Fiber-reinforced Ice Template Alumina Porous Ceramics[J]. Journal of Ceramics, 2019, 47(09): 1 191-1 197

[11] Alzukaimi J, Jabrah R. Development of High Strength Large Open Porosity Alumina Ceramics using the Sacrificial Phase Route: The Role of the Sacrificial Phase Fineness[J]. Ceramics International, 2023, 49(2): 2 923-2 933

[12] Jiang F, Wang J, He X, et al.. Morph-genetic Al₂O₃ Porous Ceramic with Fabric-structure by Processed Bio-template from Ramie Fibres[J]. Materials Letters, 2017, 194(MAY1): 242-245

[13] Liu X F, He J F, Li Y G, et al.. Foam-gelcasting Preparation of Porous SiC Ceramic for High-temperature Thermal Insulation and Infrared Stealth[J]. Rare Metals, 2023, 42(11): 3 829-3 838

[14] Wang X, Liu J, Hou F, et al.. Manufacture of Porous SiC/C Ceramics with Excellent Damage Tolerance by Impregnation of LPCS into Carbonized Pinewood[J]. Journal of the European Ceramic Society, 2015, 35(6): 1 751-1 759

[15] Gu W. Preparation of Porous SiC and CeO₂Ceramics by Biological Template Method, 2016, Changchun, Changchun University of Technology[D]

[16] Hu H. Chemistry Study on Controllable Deformation of Natural Polymer Based Hydrogels, 2021, Xiangtan, Xiangtan University[D]

[17] Zhu T. Study on the Properties of Alumina Bioceramics Solidified by Pregel Starch, 2017, Wuhan, Wuhan University of Technology[D]

[18] Guo X, Su Q, Wang H, et al.. Research Progress on the Application of Starch and Modified Starch in Bioceramics[J]. Applied Chemistry, 2022, 51(S2): 217-220

[19] Zhu T, Wang Y. Alumina Ceramics Fabricated by in-situ Consolidation of Pre grinding Starch[J]. Journal of Wuhan University of Technology-Materials Science English Edition, 2018, 33(3): 758-766

[20] Kulyk V, Duriagina Z, Kostryzhev A, et al.. The Effect of Yttria Content on Microstructure, Strength, and Fracture Behavior of Yttria-Stabilized Zirconia[J]. Materials, 2022, 15(15): 5 212

[21] Yoshida H. Control of High Temperature Mass Transport Phenomena Through Grain Boundaries in Oxide Ceramics Based on Grain Boundary Chemical Composition and External Electric Field[J]. Journal of the Ceramic Society of Japan, 2022, 130(9762-769

[22] A N T, A M Z, A F K, et al.. Microstructure-based Stress Analysis and Evaluation for Porous Ceramics by Homogenization Method with Digital Image-based Modeling[J]. International Journal of Solids & Structures, 2003, 40(5): 1 225-1 242

[23] Arab A, Sktani ZDI, Zhou Q, et al.. Effect of MgO Addition on the Mechanical and Dynamic Properties of Zirconia Toughened Alumina (ZTA) Ceramics[J]. Materials, 2019, 12(152 440

RIGHTS & PERMISSIONS

Wuhan University of Technology and Springer-Verlag GmbH Germany, Part of Springer Nature