溶胶-凝胶法制备Ba(Zn1/3Nb2/3)O3微波介质陶瓷综合实验设计  

Design of comprehensive experimental teaching on synthesis of Ba(ZnNb)O microwave dielectric ceramics by sol-gel method

作　　者：杨欣烨 缪菊红[1] 裴世鑫 YANG Xinye;MIAO Juhong;PEI Shixin(School of Chemistry and Materials Science,Nanjing University of Information Science and Technology,Nanjing 210044,China;School of Physics and Optoelectronic Engineering,Nanjing University of Information Science and Technology,Nanjing 210044,China)

机构地区：[1]南京信息工程大学化学与材料学院,江苏南京210044 [2]南京信息工程大学物理与光电工程学院,江苏南京210044

出　　处：《实验技术与管理》2020年第11期93-97,共5页Experimental Technology and Management

基　　金：国家自然科学基金青年基金项目(61701248);2019年江苏省高等教育教改立项研究课题(2019JSJG549);教育部高等学校大学物理课程教学指导委员会2019年高等学校教学研究项目(DJZW201922hd)。

摘　　要：文章围绕溶胶-凝胶法制备Ba(Zn1/3Nb2/3)O3微波介质陶瓷设计了一个综合性实验。采用溶胶-凝胶法制备了Ba(Zn1/3Nb2/3)O3纳米瓷粉,从而提高粉体表面活性,降低了Ba(Zn1/3Nb2/3)O3微波介质陶瓷的烧结温度。利用热分析、红外光谱、X射线衍射、Raman光谱、扫描电镜和透射电镜等技术对干凝胶、纳米瓷粉和陶瓷块体的组织结构进行了表征。实验涉及纳米粉体制备、陶瓷烧结工艺、材料分析表征等多个知识点,而且实验模式与科研活动一致,有助于培养学生的综合实践能力,提升学生的科学思维和综合素养。A comprehensive teaching experiment on synthesis of Ba(Zn1/3Nb2/3)O3 microwave dielectric ceramics by sol-gel method was designed.Nano powders were prepared via sol-gel method to improve the surface activity and lower the sintering temperature of Ba(Zn1/3Nb2/3)O3 ceramics.Thermal analysis,Fourier transform infrared spectroscopy,X-ray diffraction,Raman spectroscopy,scanning electron microscopy and transmission electron microscopy have been utilized to analyze the microstructure of the gel,nanopowders and bulk ceramics.The way to employ the experiment,including the preparation of nanopowders,sintering of ceramics as well as characterization of materials,is similar to that of scientific research.Therefore it can help to cultivate students’comprehensive practical ability and enhance students’scientific thinking and comprehensive literacy.

关 键 词：微波介质陶瓷 溶胶-凝胶法 综合实验 烧结 

分 类 号：TB34[一般工业技术—材料科学与工程] G642.423[文化科学—高等教育学]