Journal of Materials Science

, Volume 29, Issue 6, pp 1595–1600 | Cite as

Effect of grain boundary phase on the thermal conductivity of aluminium nitride ceramics

  • Ching -Fong Chen
  • M. E. Perisse
  • A. F. Ramirez
  • N. P. Padture
  • H. M. Chan


AIN with high thermal conductivity was fabricated by pressureless sintering with Y2O3 as the sintering aid. The thermal conductivity was observed to increase with sintering time (up to 8 h) at 1810 °C. The distribution of the sintering aid was identified as one of the major factors influencing the thermal conductivity in AIN. Non-uniform distribution of the grain boundary phase was found to be associated with a significant amount of porosity, resulting in the enhancement of phonon scattering and thereby lowering the thermal conductivity.


Polymer Aluminium Porosity Thermal Conductivity Nitride 
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Copyright information

© Chapman & Hall 1994

Authors and Affiliations

  • Ching -Fong Chen
    • 1
  • M. E. Perisse
    • 1
  • A. F. Ramirez
    • 1
  • N. P. Padture
    • 2
  • H. M. Chan
    • 2
  1. 1.Keramont CorporationTucsonUSA
  2. 2.Lehigh UniversityBethlehemUSA

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