人工晶体学报2017，Vol.46Issue(7)：1209-1214,6.
陶瓷微珠直接堆烧制备多孔莫来石陶瓷及性能研究
Fabrication and Properties of Porous Mullite Ceramics from Directly Sintering Ceramic Microspheres
摘要
Abstract
SiO2-Al2O3 ceramic microspheres were fabricated by particle-stabilized foams method combining with centrifugal spray drying process, where high purified quartz powder, alumina powder and glass powder were chosen as raw materials.Then, SiO2-Al2O3 ceramic microspheres were closely packed in the crucible, followed by directly sintering at 1500 ℃ for 1 h and porous mullite ceramics with well distributed pores were prepared through self-foaming process at elevated temperature.The effect of raw materials compositions on the properties of porous mullite ceramics has been studied.This novel method is simple, convenient, and controllable.Porous mullite ceramics with high porosity of 85.4%, compressive strength of (3.69±0.86) MPa, and low dielectric constant of 1.70 was obtained by this method which could be applied to the wave-transparent materials field.关键词
陶瓷微珠/多孔陶瓷/莫来石/介电性能Key words
ceramic microsphere/porous ceramics/mullite/dielectric property分类
化学化工引用本文复制引用
兰天,张笑妍,李娜,杨金龙,黄勇,王修慧..陶瓷微珠直接堆烧制备多孔莫来石陶瓷及性能研究[J].人工晶体学报,2017,46(7):1209-1214,6.基金项目
国家自然科学基金(51572140) （51572140）
