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Journal of Advanced Ceramics 2016, 5(2): 176-182 https://doi.org/10.1007/s40145-016-0187-z
Research Article | Open Access | Issue | Published: 01 June 2016

Phase evolution and properties of novel Al2O3-based poly-hollow microsphere (PHM) ceramics

Show Author's Information Jia-Min WUa,b,  Ying CHENa( ),  Xiao-Yan ZHANGb,  Qian HUANGb,  Jin-Long YANGb( ),  Yu-Sheng SHIa
State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
Keywords:
mechanical properties, porous ceramics, poly-hollow microsphere (PHM), pore-forming agent, phase evolution
Cite this article:
WU J-M, CHEN Y, ZHANG X-Y, et al. Phase evolution and properties of novel Al2O3-based poly-hollow microsphere (PHM) ceramics. Journal of Advanced Ceramics, 2016, 5(2): 176-182. https://doi.org/10.1007/s40145-016-0187-z
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Abstract Full text About this article

In this paper, novel Al2O3-based poly-hollow microsphere (PHM) ceramics were prepared using Si3N4 and Al2O3 PHMs as pore-forming agents. The effect of Si3N4 and Al2O3 PHMs with different percentages on properties of Al2O3-based PHM ceramics was investigated. Through adjusting percentage of Al2O3 PHMs, Al2O3-based PHM ceramics with enhanced properties are achieved. X-ray diffraction (XRD) results show that main phases of Al2O3-based PHM ceramics vary from β-SiAlON (z value increases from 2.9 to 4) to Al2O3 with the increase of percentage of Al2O3 PHMs from 10% to 100%. The different phase compositions result in different properties of Al2O3-based PHM ceramics. With the increase of percentage of Al2O3 PHMs, porosity of Al2O3-based PHM ceramics gradually decreases, while their shrinkage, flexural strength, and fracture toughness firstly decrease and then increase. Using different kinds of ceramic PHMs as pore-forming agents, various novel and high-performance porous ceramics could be prepared via optimizing percentage of ceramic PHMs in the future.


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About this article

Phase evolution and properties of novel Al2O3-based poly-hollow microsphere (PHM) ceramics

Show Author's information Jia-Min WUa,b, Ying CHENa( ), Xiao-Yan ZHANGb, Qian HUANGb, Jin-Long YANGb( ), Yu-Sheng SHIa
State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China

Abstract

In this paper, novel Al2O3-based poly-hollow microsphere (PHM) ceramics were prepared using Si3N4 and Al2O3 PHMs as pore-forming agents. The effect of Si3N4 and Al2O3 PHMs with different percentages on properties of Al2O3-based PHM ceramics was investigated. Through adjusting percentage of Al2O3 PHMs, Al2O3-based PHM ceramics with enhanced properties are achieved. X-ray diffraction (XRD) results show that main phases of Al2O3-based PHM ceramics vary from β-SiAlON (z value increases from 2.9 to 4) to Al2O3 with the increase of percentage of Al2O3 PHMs from 10% to 100%. The different phase compositions result in different properties of Al2O3-based PHM ceramics. With the increase of percentage of Al2O3 PHMs, porosity of Al2O3-based PHM ceramics gradually decreases, while their shrinkage, flexural strength, and fracture toughness firstly decrease and then increase. Using different kinds of ceramic PHMs as pore-forming agents, various novel and high-performance porous ceramics could be prepared via optimizing percentage of ceramic PHMs in the future.

Keywords: mechanical properties, porous ceramics, poly-hollow microsphere (PHM), pore-forming agent, phase evolution

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Publication history
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Publication history

Received: 07 December 2015
Revised: 20 March 2016
Accepted: 22 March 2016
Published: 01 June 2016
Issue date: June 2021

Copyright

© The author(s) 2016

Acknowledgements

Our research work presented in this paper was supported by China Postdoctoral Science Foundation (Nos. 2013M530618, 2015M572136), Fundamental Research Funds for the Central Universities (HUST: 2015J07), Open Project of State Key Laboratory of New Ceramics and Fine Processing of Tsinghua University (No. KF201518), and Basic Research Project of Shenzhen (No. JCYJ20150630155150203).

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