CAJ | 학술논문

本文研究了准同型相界处铌镁酸铅-钛酸铅(PMNT)陶瓷材料的介电压电性能，合适的组份和烧结，可使PMNT陶瓷材料具有较好的压电性能，d33达540pC/N，kt达0.50以上. 观察了不同烧结工艺下陶瓷材料的微观结构，烧结时间过长不仅使晶粒尺寸变大，亦可造成晶粒快速生长. 对化学组成和微观结构与压电性能之间的关系进行了讨论.
본문연구료준동형상계처니미산연-태산연(PMNT)도자재료적개전압전성능，합괄적조빈화소결，가사PMNT도자재료구유교호적압전성능，d33체540pC/N，kt체0.50이상. 관찰료불동소결공예하도자재료적미관결구，소결시간과장불부사정립척촌변대，역가조성정립쾌속생장. 대화학조성화미관결구여압전성능지간적관계진행료토론.
The dielectric and piezoelectric properties of lead magnate niobate-lead titanite(PMNT) ceramic material in the vicinity of the morphotropic phase boundary were investigated. The properties in the material can be improved by selecting the proper composition and sintering processing. The value of the piezoelectric coefficient d33 and the coupling factor kt is larger than 540 pC/N and 0.50, respectively. The microstructure of the material sintered with different time was investigated. Longer sintering time not only makes grains larger, but also makes the growing speed of grains faster. The correlation between chemical composition, microstructure and the piezoelectric property in PMNT ceramics was discussed.