Enhanced Humidity Stability of (Li,K,Na)NbO3-based Lead-free Piezoelectric Ceramics by Adding B2O3
5wt%B2O3-doped (Li,K,Na)NbO3 (abbreviated as LKNN-B5)-based lead-free piezoelectric ceramics were prepared via solid state synthesis.The electrical humidity sensitive properties of LKNN-B5 ceramics were examined and compared with pure LKNN ceramics.The results revealed thatB2O3 doping enhanced electrical stability of LKNN-based ceramics in relative humidity (RH) range of 33-95%.The capacitance change was suppressed from 105% down to 43% when doped with B2O3.The average absorption time was reduced from 5.5 min to 1.5 min,and desorption time decreased from 8.5 min to 2.0 min.The enhanced electrical stability of LKNN-B5 series was attributed to the dense structure induced by liquid phase sintering.
Lead-free piezoelectric Relative humidity Stability
Yuhua Zhen Daishan Wei Cuiping Jia Zhide Han
College of Science, China University of Petroleum(East China), Qingdao China
国际会议
the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))
太原
英文
626-631
2012-07-13（万方平台首次上网日期，不代表论文的发表时间）