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

Abstract:

Article Preview

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 et al., "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

Export:

Price:

$35.00

In order to see related information, you need to Login.