| 溶胶-凝胶法制备Bi0．5（Na0.825K0.175）0.5TiO3粉体 |
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| 引用本文： | 陈小明,廖运文,王怀平,毛丽君,邓一兰.溶胶-凝胶法制备Bi0．5（Na0.825K0.175）0.5TiO3粉体[J].西华师范大学学报(哲学社会科学版),2009(3):283-286. |
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| 作者姓名： | 陈小明 廖运文 王怀平 毛丽君 邓一兰 |
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| 作者单位： | 西华师范大学化学化工学院; |
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| 基金项目： | 四川省教育厅重点项目(2006A075);;西华师范大学博士启动基金(06B059) |
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| 摘 要： | 用溶胶-凝胶法制备了Bi0.5（Na0.825K0.175）0.5TiO5（简称BNKT17．5）的稳定溶胶，经退火处理得到了BNKT17．5无铅压电陶瓷粉体．研究了制备工艺条件对前驱体溶液和凝胶形成的影响并利用TG—DSC、X射线衍射（XRD），透射电镜（SEM）等技术研究了凝胶预烧温度、预烧晶体结构及晶形状况，结果表明乙酰丙酮与金属Ti离子的物质的量比n（ACAC）／n（Ti^4＋）]及pH值是影响前驱体溶液和凝胶形成的主要因素．600℃以上退火处理的粉体样品呈单一的钙钛矿结构，晶粒大小在100nm左右．
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| 关 键 词： | Bi0.5(Na0.825K 0.175)0.5TiO3 无铅压电陶瓷 溶胶-凝胶法 粉体 |
Synthesis of Bi_(0.5)(Na_(0.825)K_(0.175))_(0.5)TiO_3 Fine Powders by Sol-Gel Method |
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| CHEN Xiao-ming,LIAO Yun-wen,WANG Huai-ping,MAO Li-jun,DENG Yi-lan.Synthesis of Bi_(0.5)(Na_(0.825)K_(0.175))_(0.5)TiO_3 Fine Powders by Sol-Gel Method[J].Journal of China West Normal University:Natural Science Edition,2009(3):283-286. |
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| Authors: | CHEN Xiao-ming LIAO Yun-wen WANG Huai-ping MAO Li-jun DENG Yi-lan |
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| Institution: | College of Chemistry and Engineering;China West Normal University;Nanchong 637009;China |
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| Abstract: | The clear and transparent sols of Bi0.5(Na0.825K0.175)0.5TiO3(BNKT17.5) can be prepared by using sol-gel technology and the Bi0.5(Na0.825K0.175)0.5TiO3 fine powders were synthesized after the dry gels were calcined.The influence of initial pH value of sol,a mole ratio of tetrabutyl titanate and chelator of sols of the formation of sol-gel were investigated.The results show that both pH and the mole ratio of ACAC and the metal titanate cation content n(ACAC)/n(Ti4+)] are the main factors to form the precurs... |
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| Keywords: | Bi0 5 （ Na0 825 K0 175 ） 0 5 TiO3 piezoelectric ceramics sol-gel method powders |
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