溶胶凝胶法制备Nd_2O_3改性钛酸钡陶瓷的研究

作     者：郝素娥 韦永德 韦华 

作者机构：哈尔滨工业大学应用化学系哈尔滨150001 

出 版 物：《无机化学学报》 (Chinese Journal of Inorganic Chemistry)

年 卷 期：2002年第18卷第6期

页      面：623-626页

核心收录：

学科分类：0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 

基　　金：哈尔滨工业大学校科学研究基金资助项目(No.HIT.2000.19) 

主　　题：溶胶-凝胶法 Nd2O3 改性 钛酸钡陶瓷 BaTiO3 钕掺杂 介电性能 氧化钕 电子陶瓷 

摘      要：The technological condition for the preparation of BaTiO 3 ceramics doped with Nd ￡2O￡3 by Sol￡-Gel was deter￡-mined through orthogonal experimen t￡(r)WhennBa ￡¨Ac ￡(c) ￡2??nTi ￡¨OC ￡′H￡1￡(c)￡′??n Nd ￡2O￡3??nCH￡3￡¨CH￡2￡(c)2CH 2OH∶n H2 O￡1/2￡±￡(r)￡°￡°??￡±￡(r)￡°￡°??￡°￡(r)￡°￡°￡3??￡*￡(r)￡3￡°??￡3￡*￡(r)￡°￡′￡?pH ￡1/2￡3￡(r)￡μ￡?T￡1/225℃,the light-yellow-transparen t-stable solution and thorough tran sparent gel was generat￡-ed￡?the transforming time of solutio n to gel was ￡2￡μh￡(r)The crystal structur e and particle size of BaTiO3 ceramics doped with Nd 2O3 were studied by SEM and X-ray respectively￡?the type of the crystal was tetragonal￡?the particle size was about ￡2￡′￡(r)7nm￡(r)The dielectric constant ￡¨|?￡(c)and dielectric loss￡¨tan|?￡(c)of BaTiO3 ceramics doped with Nd 2O3 were determined between 10 4 ?10 6 Hz,and the results showed that the di electric constant was increased obviously,the dielectric loss was d ecreased clear and the resistivity(ρ V ￡(c)was also decreased noticeably￡(r)