Hollow Multiphase Ceramic Microspheres of Al+Cr2O3+SiO2 System Prepared by Self-Reaction Quenching Technology

Xu Dong Cai; Jian Jiang Wang; Bao Cai Xu; Hong Fei Lou; Xing Jian Huo

doi:10.4028/www.scientific.net/KEM.512-515.621

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Hollow Multiphase Ceramic Microspheres of Al+Cr₂O₃+SiO₂ System Prepared by Self-Reaction Quenching Technology

Abstract:

This paper aims to study preparation and mechanism of hollow ceramic microspheres. With Al+Cr₂O₃+SiO₂+sucrose+epoxy resin as reactive system, Al2O3-based hollow ceramic microspheres are synthesized and reaction mechanism of hollow ceramic microspheres is established. Results show that the quenching products consist of hollow spherical or irregularly spherical particles and irregularly powders. Spherical or irregularly spherical particles are hollow structure and constitutive of Al₂O₃-SiC diphase and a few Cr₃Si、Cr₇C₃. The preparation of hollow ceramic microspheres includes igniting by heating, forming ceramic thawy droplets and fast cooling. The great deal of air produced by burning epoxy resin and sucrose is the key reason why hollow ceramic microspheres are formed.

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Periodical:

Key Engineering Materials (Volumes 512-515)

Pages:

621-625

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.512-515.621

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Online since:

June 2012

Authors:

Xu Dong Cai, Jian Jiang Wang, Bao Cai Xu, Hong Fei Lou, Xing Jian Huo

Keywords:

Al₂O₃-SiC Hollow Ceramic Microspheres, Formation Mechanism, Self-Reactive Quenching Technology

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