The Effect of Dopants on Sintering and Microstructure of Lead-Free KNN Ceramics

Materials Science = Medžiagotyra 2011
Ilze Smeltere, Maija Antonova, Anna Kalvāne, Oskars Grīgs, Māris Līviņš

Lead-free potassium sodium niobate (K0.5Na0.5)NbO3 (KNN) has been prepared via conventional ceramic processing method. The influence of 0.5 – 1.5 wt% MnO2 and WO3 addition on the sintering, crystallographic structure, microstructure and dielectric properties of KNN has been investigated. Optimal sintering temperatures of KNN ceramics were observed to be in the narrow interval: 1090-1110°C for MnO2 doped KNN; 1150-1170°C for pure KNN and doped with WO3. XRD patterns showed that all the samples have single perovskite structure with monoclinic structure. Microstructure of ceramics was changed greatly by using dopants.

Atslēgas vārdi
Potassium sodium niobate, lead-free, oxide additives, piezoelectric ceramics, sintering
DOI
10.5755/j01.ms.17.1.251
Hipersaite
http://matsc.ktu.lt/index.php/MatSc/article/view/251

Smeltere, I., Antonova, M., Kalvāne, A., Grīgs, O., Līviņš, M. The Effect of Dopants on Sintering and Microstructure of Lead-Free KNN Ceramics. Materials Science = Medžiagotyra, 2011, Vol. 17, No. 1, 62.-64.lpp. ISSN 1392-1320. e-ISSN 2029-7289. Pieejams: doi:10.5755/j01.ms.17.1.251

Publikācijas valoda
English (en)