The Effect of Microsilica and Aluminum Metal Powder on the Densification Parameters, Mechanical Properties and Microstructure of Alumina–Mullite Ceramic Composites

M. M. S. Wahsh; H. E. H. Sadek; S. Abd El-Aleem; H. H. M. Darweesh

doi:doi:10.11648/j.am.20150404.12

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The Effect of Microsilica and Aluminum Metal Powder on the Densification Parameters, Mechanical Properties and Microstructure of Alumina–Mullite Ceramic Composites

M. M. S. Wahsh, H. E. H. Sadek, S. Abd El-Aleem, H. H. M. Darweesh

Published in Advances in Materials (Volume 4, Issue 4)

Received: 26 June 2015 Accepted: 9 July 2015 Published: 28 July 2015

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Abstract

Microsilica, or silica fume, is an amorphous type of silica mostly collected as byproduct of the silicon and ferro-silicon alloy production. In this work, low shrinkage alumina-mullite ceramic composites were prepared from mixtures of calcined alumina, silica fume and aluminum metal powder and sintered at 1550oC for 2 hrs. The influence of silica fume and aluminum powder on the densification parameter, in situ mullite formed and mechanical properties of sintered samples were studied. The phase composition and the microstructural evolution of the sintered samples were also investigated. The results showed that, silica fume enhances the mechanical properties of sintered samples, while the aluminum powder improves the mullite formation process. Ultra low shrinkage (close to zero), and good mechanical properties (CCS ≈ 70 MPa) of alumina-mullite ceramic composites were achieved. Alumina-mullite ceramic composites are considered a promising material for high temperature applications.

Published in	Advances in Materials (Volume 4, Issue 4)
DOI	10.11648/j.am.20150404.12
Page(s)	80-84
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2015. Published by Science Publishing Group

Keywords

Ceramics, X-ray Diffraction, Mechanical Properties, Microstructure

References

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M. M. S. Wahsh, H. E. H. Sadek, S. Abd El-Aleem, H. H. M. Darweesh. (2015). The Effect of Microsilica and Aluminum Metal Powder on the Densification Parameters, Mechanical Properties and Microstructure of Alumina–Mullite Ceramic Composites. Advances in Materials, 4(4), 80-84. https://doi.org/10.11648/j.am.20150404.12

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ACS Style

M. M. S. Wahsh; H. E. H. Sadek; S. Abd El-Aleem; H. H. M. Darweesh. The Effect of Microsilica and Aluminum Metal Powder on the Densification Parameters, Mechanical Properties and Microstructure of Alumina–Mullite Ceramic Composites. Adv. Mater. 2015, 4(4), 80-84. doi: 10.11648/j.am.20150404.12

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AMA Style

M. M. S. Wahsh, H. E. H. Sadek, S. Abd El-Aleem, H. H. M. Darweesh. The Effect of Microsilica and Aluminum Metal Powder on the Densification Parameters, Mechanical Properties and Microstructure of Alumina–Mullite Ceramic Composites. Adv Mater. 2015;4(4):80-84. doi: 10.11648/j.am.20150404.12

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@article{10.11648/j.am.20150404.12,
  author = {M. M. S. Wahsh and H. E. H. Sadek and S. Abd El-Aleem and H. H. M. Darweesh},
  title = {The Effect of Microsilica and Aluminum Metal Powder on the Densification Parameters, Mechanical Properties and Microstructure of Alumina–Mullite Ceramic Composites},
  journal = {Advances in Materials},
  volume = {4},
  number = {4},
  pages = {80-84},
  doi = {10.11648/j.am.20150404.12},
  url = {https://doi.org/10.11648/j.am.20150404.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.am.20150404.12},
  abstract = {Microsilica, or silica fume, is an amorphous type of silica mostly collected as byproduct of the silicon and ferro-silicon alloy production. In this work, low shrinkage alumina-mullite ceramic composites were prepared from mixtures of calcined alumina, silica fume and aluminum metal powder and sintered at 1550oC for 2 hrs. The influence of silica fume and aluminum powder on the densification parameter, in situ mullite formed and mechanical properties of sintered samples were studied. The phase composition and the microstructural evolution of the sintered samples were also investigated. The results showed that, silica fume enhances the mechanical properties of sintered samples, while the aluminum powder improves the mullite formation process. Ultra low shrinkage (close to zero), and good mechanical properties (CCS ≈ 70 MPa) of alumina-mullite ceramic composites were achieved. Alumina-mullite ceramic composites are considered a promising material for high temperature applications.},
 year = {2015}
}

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TY - JOUR
T1 - The Effect of Microsilica and Aluminum Metal Powder on the Densification Parameters, Mechanical Properties and Microstructure of Alumina–Mullite Ceramic Composites
AU - M. M. S. Wahsh
AU - H. E. H. Sadek
AU - S. Abd El-Aleem
AU - H. H. M. Darweesh
Y1 - 2015/07/28
PY - 2015
N1 - https://doi.org/10.11648/j.am.20150404.12
DO - 10.11648/j.am.20150404.12
T2 - Advances in Materials
JF - Advances in Materials
JO - Advances in Materials
SP - 80
EP - 84
PB - Science Publishing Group
SN - 2327-252X
UR - https://doi.org/10.11648/j.am.20150404.12
AB - Microsilica, or silica fume, is an amorphous type of silica mostly collected as byproduct of the silicon and ferro-silicon alloy production. In this work, low shrinkage alumina-mullite ceramic composites were prepared from mixtures of calcined alumina, silica fume and aluminum metal powder and sintered at 1550oC for 2 hrs. The influence of silica fume and aluminum powder on the densification parameter, in situ mullite formed and mechanical properties of sintered samples were studied. The phase composition and the microstructural evolution of the sintered samples were also investigated. The results showed that, silica fume enhances the mechanical properties of sintered samples, while the aluminum powder improves the mullite formation process. Ultra low shrinkage (close to zero), and good mechanical properties (CCS ≈ 70 MPa) of alumina-mullite ceramic composites were achieved. Alumina-mullite ceramic composites are considered a promising material for high temperature applications.
VL - 4
IS - 4
ER -

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Author Information

M. M. S. Wahsh

Refractories, Ceramics and Building Materials Department, National Research Centre, Cairo, Egypt
H. E. H. Sadek

Refractories, Ceramics and Building Materials Department, National Research Centre, Cairo, Egypt
S. Abd El-Aleem

Chemistry Department, Faculty of Science, Fayoum University, El-Fayoum, Egypt
H. H. M. Darweesh

Refractories, Ceramics and Building Materials Department, National Research Centre, Cairo, Egypt

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APA Style

M. M. S. Wahsh, H. E. H. Sadek, S. Abd El-Aleem, H. H. M. Darweesh. (2015). The Effect of Microsilica and Aluminum Metal Powder on the Densification Parameters, Mechanical Properties and Microstructure of Alumina–Mullite Ceramic Composites. Advances in Materials, 4(4), 80-84. https://doi.org/10.11648/j.am.20150404.12

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ACS Style

M. M. S. Wahsh; H. E. H. Sadek; S. Abd El-Aleem; H. H. M. Darweesh. The Effect of Microsilica and Aluminum Metal Powder on the Densification Parameters, Mechanical Properties and Microstructure of Alumina–Mullite Ceramic Composites. Adv. Mater. 2015, 4(4), 80-84. doi: 10.11648/j.am.20150404.12

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AMA Style

M. M. S. Wahsh, H. E. H. Sadek, S. Abd El-Aleem, H. H. M. Darweesh. The Effect of Microsilica and Aluminum Metal Powder on the Densification Parameters, Mechanical Properties and Microstructure of Alumina–Mullite Ceramic Composites. Adv Mater. 2015;4(4):80-84. doi: 10.11648/j.am.20150404.12

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@article{10.11648/j.am.20150404.12,
  author = {M. M. S. Wahsh and H. E. H. Sadek and S. Abd El-Aleem and H. H. M. Darweesh},
  title = {The Effect of Microsilica and Aluminum Metal Powder on the Densification Parameters, Mechanical Properties and Microstructure of Alumina–Mullite Ceramic Composites},
  journal = {Advances in Materials},
  volume = {4},
  number = {4},
  pages = {80-84},
  doi = {10.11648/j.am.20150404.12},
  url = {https://doi.org/10.11648/j.am.20150404.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.am.20150404.12},
  abstract = {Microsilica, or silica fume, is an amorphous type of silica mostly collected as byproduct of the silicon and ferro-silicon alloy production. In this work, low shrinkage alumina-mullite ceramic composites were prepared from mixtures of calcined alumina, silica fume and aluminum metal powder and sintered at 1550oC for 2 hrs. The influence of silica fume and aluminum powder on the densification parameter, in situ mullite formed and mechanical properties of sintered samples were studied. The phase composition and the microstructural evolution of the sintered samples were also investigated. The results showed that, silica fume enhances the mechanical properties of sintered samples, while the aluminum powder improves the mullite formation process. Ultra low shrinkage (close to zero), and good mechanical properties (CCS ≈ 70 MPa) of alumina-mullite ceramic composites were achieved. Alumina-mullite ceramic composites are considered a promising material for high temperature applications.},
 year = {2015}
}

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