A comparative study of double layers Al2O3/Al2O3 and Al2O3/SiO2 prepared by microwave and natural drying
In this work, a comparative study of green double layers ceramic bodies prepared by natural and microwave drying techniques was investigated. The double layers ceramic with combination of Al2O3/Al2O3 and Al2O3/SiO2 samples were prepared via compaction method. Alumina powder, Al2O3 with particle size...
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| Format: | Article |
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Pejabat Penerbit
2012
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| Online Access: | http://penerbit.uthm.edu.my/ojs/index.php/ijie/article/view/129 http://penerbit.uthm.edu.my/ojs/index.php/ijie/article/view/129 http://eprints.uthm.edu.my/8255/1/49_A_comparative_study_(cant_upload).pdf |
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| Summary: | In this work, a comparative study of green double layers ceramic bodies prepared by natural and
microwave drying techniques was investigated. The double layers ceramic with combination of Al2O3/Al2O3 and
Al2O3/SiO2 samples were prepared via compaction method. Alumina powder, Al2O3 with particle size 90μm and
<45μm, silica powder, SiO2 with particle size <45μm were used in this study. Measurement of linear shrinkage of
pellet shows that microwave drying contributed to lower shrinkage value compared to the natural drying method.
The characterization of the microstructure of double layers ceramic body also showed that microwave technique
formed a good bonding structure especially at the critical interface layer. In fact, the implementation of microwave
drying also significantly reduced the drying time and produced a good and homogenous final structure. |
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