摘要
研究了烧结温度、保温时间、退火时间等工艺参数对Ba(Mg1/3 Nb2 /3 )O3 微波介质陶瓷品质因子的影响。结果表明,随着烧结温度的提高,Qf 值逐渐增加,这是由于陶瓷的相对密度和有序参数S也随烧结温度增加的结果。在15 5 0℃时,Qf 达到最大值4 95 0 0GHz。Qf 值随保温时间的增加而增加,这和B位1∶2有序度提高和晶粒尺寸增大有关。保温时间为16h时,Qf 值达到5 80 0 0GHz。退火时间对Qf 值有很大影响。随退火时间的增加,Qf 值增加很快,这主要是因为退火大大促进了B位离子的1∶2有序。当退火时间为4 8h时,Qf 值达到715 0 0GHz。
The influences of sintering temperature, soaking time and annealing time on the quality factor of Ba(Mg/13Nb2/3)O3 microwave dielectric ceramic were investigated. The result showed that Qf value increased as the sintering temperature increasing. It was ascribed to the increasing of the relative density and ordering parameter S. The maximum value of Qf, 49500 GHz, was gained at 1550°C. With soaking time increasing, Qf value increased. The increasing of B-site 1:2 ordering degree and grain size should be responsible for the improvement of Qf value. When soaking time was 16 h, Qf value reached 58000 GHz. Annealing time had great effect on Qf value. With annealing time increasing, Qf value increased quickly. This was because of the improvement of B-site 1:2 ordering caused by annealing. A high Qf value, 71500 GHz, was acquired when annealing time was 48 h.
出处
《武汉理工大学学报》
EI
CAS
CSCD
北大核心
2005年第6期5-7,14,共4页
Journal of Wuhan University of Technology
基金
教育部资助项目
