CAJ | 학술논문

系统研究了(1-x)Na1/2Bi1/2TiO3-xBaTiO3(x=0.02、0.04、0.06、0.08、0.10)无铅压电陶瓷系统的相界、材料压电性能，弛豫特性及相变. 这个系统的陶瓷材料具有Kt/Kp较大，频率常数比较高等特点. X-ray衍射结构?分析发现此系统的相界在0.04<x<0.06之间；材料的一些主要性能在相界附近达到极值. 利用介电系数-温度曲线, 并结合热激电流曲线对此系统的弛豫性进行研究和分析；初步研究了各配方组成的铁电-顺电的相变过程，发现在一定的组成范围内，材料在由铁电相向顺电相的转变过程中经历了一个过渡相区.
계통연구료(1-x)Na1/2Bi1/2TiO3-xBaTiO3(x=0.02、0.04、0.06、0.08、0.10)무연압전도자계통적상계、재료압전성능，이예특성급상변. 저개계통적도자재료구유Kt/Kp교대，빈솔상수비교고등특점. X-ray연사결구?분석발현차계통적상계재0.04<x<0.06지간；재료적일사주요성능재상계부근체도겁치. 이용개전계수-온도곡선, 병결합열격전류곡선대차계통적이예성진행연구화분석；초보연구료각배방조성적철전-순전적상변과정，발현재일정적조성범위내，재료재유철전상향순전상적전변과정중경력료일개과도상구.
For (1-x)Na1/2Bi1/2TiO3-BaTiO3(x=0.02, 0.04, 0.06, 0.08, 0.10) lead-free ceramic system the morphotropic boundary, piezoelectric property, relaxation property and phase transition were investigated. The piezoelectric ceramics ofthis system possess large ratios of Kt/Kp and high frequency constants. According to XRD patterns, the morphotropic boundary lies in the composition range of 0.04<x<0.06. The main physical properties of this system can reach extreme values near the morphotropic boundary. The relaxation property of this system was studied by using dielectric constant-temperature curves and thermally stimulated depolarization current (TSDC) curves. Phase transition from ferroelectric to paraelectric phase was also primarily discussed and it was found out that the ceramics within a composition range possess transitional phase region between ferroelectric phase and paraelectric phase.