Sintering behavior of aluminum nitride ceramics with MgO-CaO-Al2O3-SiO2 glass additive

Hwa Jun Lee; Sang Woo Kim; Sung Soo Ryu

doi:10.1016/j.ijrmhm.2015.04.013

Sintering behavior of aluminum nitride ceramics with MgO-CaO-Al₂O₃-SiO₂ glass additive

Hwa Jun Lee, Sang Woo Kim, Sung Soo Ryu

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

In this study, MgO-CaO-Al₂O₃-SiO₂ (MCAS) glass oxide fabricated by a conventional melting process was used as a sintering additive to prepare dense AlN ceramics at lower temperatures. AlN specimen with 5 wt.% MCAS glass oxide was produced by sintering in a dilatometer and a conventional furnace. The sintering behavior of the glass-doped AlN was investigated by means of dilatometric analysis, X-ray diffraction analysis, and field-emission scanning electron microscopy microstructural observation. Results revealed that the melted glass phase had a significant effect on the densification of the AlN ceramics by a liquid-phase sintering. This led to a reduction in the sintering temperature by 200 °C from the 1800 °C required for conventional AlN-rare earth or -alkaline earth oxide system.

Original language	English
Pages (from-to)	46-50
Number of pages	5
Journal	International Journal of Refractory Metals and Hard Materials
Volume	53
DOIs	https://doi.org/10.1016/j.ijrmhm.2015.04.013
Publication status	Published - 2015 Nov

Bibliographical note

Funding Information:
This research was supported by the Korea Institute for the Advancement of Technology .

Publisher Copyright:
© 2015 Elsevier Ltd. All rights reserved.

All Science Journal Classification (ASJC) codes

Ceramics and Composites
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/j.ijrmhm.2015.04.013

Cite this

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title = "Sintering behavior of aluminum nitride ceramics with MgO-CaO-Al2O3-SiO2 glass additive",

abstract = "In this study, MgO-CaO-Al2O3-SiO2 (MCAS) glass oxide fabricated by a conventional melting process was used as a sintering additive to prepare dense AlN ceramics at lower temperatures. AlN specimen with 5 wt.% MCAS glass oxide was produced by sintering in a dilatometer and a conventional furnace. The sintering behavior of the glass-doped AlN was investigated by means of dilatometric analysis, X-ray diffraction analysis, and field-emission scanning electron microscopy microstructural observation. Results revealed that the melted glass phase had a significant effect on the densification of the AlN ceramics by a liquid-phase sintering. This led to a reduction in the sintering temperature by 200 °C from the 1800 °C required for conventional AlN-rare earth or -alkaline earth oxide system.",

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AU - Kim, Sang Woo

AU - Ryu, Sung Soo

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AB - In this study, MgO-CaO-Al2O3-SiO2 (MCAS) glass oxide fabricated by a conventional melting process was used as a sintering additive to prepare dense AlN ceramics at lower temperatures. AlN specimen with 5 wt.% MCAS glass oxide was produced by sintering in a dilatometer and a conventional furnace. The sintering behavior of the glass-doped AlN was investigated by means of dilatometric analysis, X-ray diffraction analysis, and field-emission scanning electron microscopy microstructural observation. Results revealed that the melted glass phase had a significant effect on the densification of the AlN ceramics by a liquid-phase sintering. This led to a reduction in the sintering temperature by 200 °C from the 1800 °C required for conventional AlN-rare earth or -alkaline earth oxide system.

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