图书来源:二元合金相图及中间相晶体结构 二元合金相图及中间相晶体结构
作 者:唐仁政 田荣璋
出版时间:2009-05
定 价:320元
图书ISBN:978-7-81105-831-4
出版单位:中南大学出版社
Fei Wu, Qilong Zhang and Hui Yang Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
摘 要:A sol-gel processing was used to synthesize (Ca0.61,Nd0.26)TiO3 (CNT) nanoparticles doped with Li-Cu-B at low temperature. Orthorhombic perovskite structure phase with a small amount of Li3BO3 secondary phase was formed by calcining the xerogels at 3000C, and monodisperse CNT nano-powders with the grain size of 10-15 nm could be obtained. By using these nanocrystalline CNT powders, dense CNT ceramics could be achieved at the low sintering temperature of 1100?C due to the effect of the small size nanoparticles and liquid phase Li3BO3. And the dielectric properties with dielectric constant (εr= 89.52), quality value factors with frequency (Q×f=17148 GHz) and the temperature coe?cient of resonant frequency (τf) value of +239×1006/0C were achieved.
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