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

Hwa Jun Lee, Sang Woo Kim, Sung Soo Ryu

Research output: Contribution to journalArticlepeer-review


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 languageEnglish
Pages (from-to)46-50
Number of pages5
JournalInternational Journal of Refractory Metals and Hard Materials
Publication statusPublished - 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


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