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Detailed Program
Paper Number : LP-P08
Time Frame : 12:00~13:30
Presentation Date : Friday, 28, November
Session Name : Leadfree Piezoelectrics
Session Chair 1# : -
Session Chair 2# : -
Low-temperature sintering of the lead-free BNKT-BMT using sintering aids for piezoelectric acoustic actuators
Mr.Heesung Kim
University of ulsan
In general, BNKT-based ceramics should be sintered at high temperatures range of 1150¢®É-1180¢®É in order to obtain complete densification. Multilayer ceramics actuators device requires co-firing with Ag/Pd internal electrode. The ratio of expensive Pd in Ag/Pd internal electrode must be increased when multilayer structured piezoelectric ceramics are co-fired with internal electrode since the sintering temperature of BNKT system ceramics is higher than 1150oC. And also, high sintering temperature can deteriorate the stability of the piezoelectric properties due to the formation of interfacial micro-defects and internal electrode loss. Therefore, the decreasing sintering temperature of piezoelectric ceramics is important process for development of multilayer ceramics actuators.
Acknowledgements : This work was supported by the development program of local science park funded by the ULSAN Metropolitan City and the MSIP(Ministry of Science, ICT and Future Planning)