PNN基铁电陶瓷/NiZnCu铁氧体叠层低温共烧行为的研究  

Multilayer Composites Low-temperature-cofired by PNN-based Ferroelectrics and NiZnCu Ferrite

作　　者：高峰[1] 屈绍波[2] 杨祖培[1] 田长生[1] 

机构地区：[1]西北工业大学材料科学与工程学院,西安710072 [2]西安交通大学机械工程学院,西安710049

出　　处：《无机材料学报》2004年第1期114-120,共7页Journal of Inorganic Materials

基　　金：航空科学基金(02G53044);西北工业大学博士论文创新基金(0400G14102)

摘　　要：采用流延成型工艺制备了Pb(Ni1/3Nb2/3)O3基铁电陶瓷与NiZnCu铁氧体叠层复合体,研究了两种材料的低温共烧兼容特性,结果表明,两种材料之间不会发生化学反应产生新的物相,二者具有良好的化学相容性;两种材料于950℃下烧结可获得无翘曲变形、无分层开裂、界面结合良好的叠层共烧体;对叠层共烧体微观组织结构分析表明,靠近界面处介电材料晶粒尺寸与远离界面处晶粒尺寸有差别,提出差别因子dD参数用于表征界面处微观组织形态的变化;对叠层共烧体进行淬火实验表明两种材料可以良好的共烧在一起,并形成强结合的界面.The multilayer composites were prepared by cofiring Pb (Ni-1/3 Nb-2/3)O-3-based ferroelectrics and NiZnCu ferrite. Their interaction, cofiring properties and interface microstructure were investigated. The difference factor d(D) was proposed to describe the microstructure difference between the interface and the inner parts. The results show that there is no chemical reaction existing between the ferroelectrics and ferrite materials. The multilayer composites cofired by ferroelectrics and ferrite at low temperature (950degreesC) with no camber and crack defects can be successfully prepared. The grain of ferroelectrics adjacent to the interface is larger than that far from the interface. The interface bonding property of the multilayer composites testified by quenching into water from 500degreesC to room temperature, showing no cracks or delaminations, is excellent.

关 键 词：铁电陶瓷 铁氧体 叠层共烧 界面 

分 类 号：TN304[电子电信—物理电子学]