摘要
以 BaTiO_3微粉为基体,采用液相颗粒包裹—界面反应的方法,进行加镁颗粒表面改性的研究,提出了一套较完善且简便的新的粉体制备技术与方法.用此技术获得了高分散、包裹均匀和活性好的粉体,以此粉体烧结制得了晶粒均匀、细晶、高硬度、介电性能优良的 BaTiO_3基陶瓷材料.从这一事实得到启示:通过不同元素(单独或复合)的颗粒表面改性,有可能获得性能各异且各有特色的 BaTiO_3基陶瓷.这种技术可以扩大应用于其它电子陶瓷系统.
A new powder technology was developed in such an experiment by using BaTiO_3 pow-der as base material and liquid phase particle coating-interfacial reaction method to study theparticle surface modification with magnesium salt.By this technology,a highly dispersed,ho-mogeneously wrapped active powder was fabricated.The ceramics obtained from these powderspossess fine and even grain size,high microhardness and better dielectric properties.The experimental results convinced us that through the particle surface modification withdifferent elements a series of BaTiO_3 ceramics with various properties and different character-istics could be obtained.This technology can also be used in other electronic ceramics.
出处
《无机材料学报》
SCIE
EI
CAS
CSCD
北大核心
1993年第2期189-195,共7页
Journal of Inorganic Materials
基金
国家自然科学基金会资助项目
编号 5870099
关键词
陶瓷
改性
氧化钛钡
Surface modification
Liquid phase particle coating
Micropowder
BaTiO_3 based ceramics
