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Microwave Effects on Microstructure of Ceramics

Majalah Ilmiah Pendidikan Matematika dan Ilmu Pengetahuan Alam · Vol. 1 No. 1 (2015)

ISSN
1412-2138
Published
2015-01-20
Publisher
Universitas Halu Oleo
Language
eng

Abstract

The sintering and microstructure evolution of alumina ceramic sintered by a wide range microwave were investigated. Bulk density were calculated by using Archimedes method while the grain size measurements were used to correlate sintering with grain growth was observed by electron microscope. The microwave effects such as an enhancement of densification and shorter time of processing of microwaves compared to conventional case have been found and reported in previous paper. There was also showed microwave frequency dependency of alumina`s densification. Unfortunately there is no satisfactory theory to explain the phenomena. However the electric field inside sample during electromagnetic heating is believed as the main factor. In this paper further investigation of microwave effect on alumina properties was reported. The effect of microwave on microstructure of alumina is evaluated. Grain evolution for each sintering methods were evaluated by using image processing on the scanning electron microscopy’s photos of fracture and grinded surfaces of samples. There showed that microstructure of sintered alumina is dependent on the microwave frequencies. Some possible mechanisms were also discussed.

Keywords

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Metadata source: OAI-PMH (metadata jurnal) https://ojs.uho.ac.id/index.php/MIPMIPA/oai, first harvested 30 Okt 2026, last seen 1 Nov 2026.
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	<dc:title xml:lang="en-US">Microwave Effects on Microstructure of Ceramics</dc:title>
	<dc:creator>Sudianaa, I Nyoman Sudianaa</dc:creator>
	<dc:creator>Mitsudob, Seitaro</dc:creator>
	<dc:creator>Inagakib, Shunsuke</dc:creator>
	<dc:creator>Sakob, Katsuide</dc:creator>
	<dc:subject xml:lang="en-US"></dc:subject>
	<dc:subject xml:lang="en-US">; Microstructure; Grain size; Microwave effect</dc:subject>
	<dc:subject xml:lang="en-US"></dc:subject>
	<dc:description xml:lang="en-US">The sintering and microstructure evolution of alumina ceramic sintered by a wide range microwave were investigated. Bulk density were calculated by using Archimedes method while the grain size measurements were used to correlate sintering with grain growth was observed by electron microscope. The microwave effects such as an enhancement of densification and shorter time of processing of microwaves compared to conventional case have been found and reported in previous paper. There was also showed microwave frequency dependency of alumina`s densification.  Unfortunately there is no satisfactory theory to explain the phenomena. However the electric field inside sample during electromagnetic heating is believed as the main factor. In this paper further investigation of microwave effect on alumina properties was reported. The effect of microwave on microstructure of alumina is evaluated.  Grain evolution for each sintering methods were evaluated by using image processing on the scanning electron microscopy’s photos of fracture and grinded surfaces of samples. There showed that microstructure of sintered alumina is dependent on the microwave frequencies. Some possible mechanisms were also discussed.</dc:description>
	<dc:publisher xml:lang="en-US">Universitas Halu Oleo</dc:publisher>
	<dc:contributor xml:lang="en-US"></dc:contributor>
	<dc:date>2015-01-20</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
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	<dc:type xml:lang="en-US">Peer-reviewed Article</dc:type>
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	<dc:identifier>https://ojs.uho.ac.id/index.php/MIPMIPA/article/view/2</dc:identifier>
	<dc:source xml:lang="en-US">Majalah Ilmiah Pendidikan Matematika dan Ilmu Pengetahuan Alam; Vol 1, No 1 (2014); 10</dc:source>
	<dc:source>1412-2138</dc:source>
	<dc:language>eng</dc:language>
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