Paper Title:
Effect of Additives on Dielectric Loss of AlN Ceramics
  Abstract

The effects of sintering additives on dielectric loss tangent of AlN ceramics were explored. Different amounts of Y2O3 and TiO2 were respectively added as sintering additives to AlN powders and pressureless sintering was performed in a nitrogen flow atmosphere at 1850 °C or 1900 °C for 2 hours. The resulted AlN ceramics became denser when TiO2 addition was more than 0.5 mol%, and a dense sinter with a relative density of 0.987 could be obtained. Tan δ decreased when TiO2 content was more than 0.5 mol% and a tan δ value of as low as 1.0 x 10-3 could be attained.

  Info
Periodical
Key Engineering Materials (Volumes 317-318)
Edited by
T. Ohji, T. Sekino and K. Niihara
Pages
845-848
DOI
10.4028/www.scientific.net/KEM.317-318.845
Citation
S. Kume, M. Yasuoka, N. Omura, K. Watari, "Effect of Additives on Dielectric Loss of AlN Ceramics", Key Engineering Materials, Vols. 317-318, pp. 845-848, 2006
Online since
August 2006
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Price
$32.00
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