Title of article
Microwave sintering of β-SiAlON–ZrO2 composites
Author/Authors
Sreekumar Chockalingam، نويسنده , , Henry Kodi Traver، نويسنده ,
Issue Information
ماهنامه با شماره پیاپی سال 2010
Pages
6
From page
3641
To page
3646
Abstract
Densification, phase transformation, microstructure evolution and hardness of microwave sintered β-SiAlON–ZrO2 composites were investigated and compared with conventionally sintered samples. Sintering trials were performed by a high vacuum capable 2.45 GHz microwave furnace without decomposition. Microwave sintered samples showed better densification behavior than conventional sintered samples. The higher density observed in the case of microwave sintered samples was attributed to volumetric fast heating. X-ray diffraction results of conventionally sintered samples showed β-SiAlON, tetragonal ZrO2 and ZrN phases, while, ZrO2 reacted with nitrogen and completely transformed to ZrN in the case of microwave sintered samples. The aspect ratios of microwave sintered β-SiAlON grains were higher than conventional sintered samples whereas, hardness remained lower.
Keywords
Microwave processing , Sialon , Microstructure , ZrO2 , Hardness
Journal title
Materials and Design
Serial Year
2010
Journal title
Materials and Design
Record number
1069068
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