Grain growth kinetic in xCoO-6 wt.% Bi2O3-(94-x) ZnO (x = 0, 2, 4) ceramic system


Gunay V., Gelecek-Sulan O., Ozkan O.

CERAMICS INTERNATIONAL, cilt.30, ss.105-110, 2004 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 30 Konu: 1
  • Basım Tarihi: 2004
  • Doi Numarası: 10.1016/s0272-8842(03)00071-3
  • Dergi Adı: CERAMICS INTERNATIONAL
  • Sayfa Sayıları: ss.105-110

Özet

The grain growth kinetics in the 0, 2, 4 wt.% CoO added ZnO-6 wt.% Bi2O3 system was studied using the simplified phenomenological grain growth kinetics equation G(n) = K.t.exp(-Q/RT) together with the physical properties of the sintered samples. The grain growth exponent value (n) and the apparent activation energy for the ZnO-6 wt.% Bi2O3 system was found to be 5.2 and similar to200 kJ/mol respectively. The addition of the CoO to the ZnO-6 wt.% Bi2O3 system had no effect in the grain growth. At 0% CoO addition the apparent activation energy was calculated as 204 kJ/mol and with 4 wt.% CoO addition it was calculated as 203 kJ/mol. (C) 2003 Elsevier Ltd and Techna S.r.l. All rights reserved.