Enhanced Piezoelectric Properties Of (K0.40na0.60)(0.94)Li0.06nb0.94sbo3 Lead-Free Ceramics By Optimizing The Sintering Temperature

Effects of sintering temperature on the microstructure and electrical properties of (K0.40Na0.60)(0.94)Li0.06SbO3 (KNLNS) lead-free ceramics are investigated. The grain size gradually becomes larger with increasing sintering temperature from 1055 degrees C to 1105 degrees C, and the piezoelectric property could be enhanced by optimizing their sintering temperature. The ceramic sintered at 1075 degrees C has optimum electrical properties, i.e., d(33)similar to 272 pC/N, k(p)similar to 43.5%, epsilon(r)similar to 1152, tan delta similar to 0.026, and T-C similar to 346 degrees C. These results show that the sintering temperature can optimize electrical properties of KNLNS ceramics. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.