Paper Title:
Phase Development during Mixed–Oxide Processing of a [Na0.5K0.5NbO3]1-x -[LiTaO3]x Powder
  Abstract

Powders of the solid solution series [Na0.5K0.5NbO3]1-x - [LiTaO3]x, with x = 0.06, are shown to transform from an orthorhombic to a tetragonal crystal system as calcination temperature is increased in the range 850 °C to 1100 °C. Addition of 3 wt% of each alkali carbonate prior to calcination allows retention of the orthorhombic phase to 1100 oC. The latter changes in phase content are attributed to a partial compensation of alkali oxide volatilisation losses. The approach of adding extra alkali carbonates lead to an increase in d33 coefficient in sintered ceramics.

  Info
Periodical
Key Engineering Materials (Volumes 368-372)
Edited by
Wei Pan and Jianghong Gong
Pages
1886-1889
DOI
10.4028/www.scientific.net/KEM.368-372.1886
Citation
T.A. Skidmore, T. Stevenson, T.P. Comyn, S.J. Milne, "Phase Development during Mixed–Oxide Processing of a [Na0.5K0.5NbO3]1-x -[LiTaO3]x Powder", Key Engineering Materials, Vols. 368-372, pp. 1886-1889, 2008
Online since
February 2008
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Price
$32.00
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