摘要随着当今世界科技的飞速发展和人类社会的不断进步，铁电性和铁磁性材料在现代科技中得到广泛运用，而BaTiO3/CoFe2O4作为复合多铁性材料同时具备多种性能被人们所关注和研究，并创造了巨大的经济利益。本论文通过BaTiO3/CoFe2O4的烧结工艺研究，采用固相合成法合成BaTiO3和CoFe2O4的微米粉料，使用球磨混合法制成BaTiO3/CoFe2O4的粉料，在运用干压成型法和固相烧结法来制备BaTiO3/CoFe2O4复合陶瓷，主要通过调节配比与烧结温度来观察BaTiO3/CoFe2O4烧结前后尺寸、结构的影响规律。通过大量的实验和实验数据得知1200℃是最接近BaTiO3含量在50%、60%和70%的最佳烧结温度，1250℃是最接近BaTiO3含量在80%的最佳烧结温度，1300℃是最接近BaTiO3含量在90%的最佳烧结温度，并且在1200℃下BaTiO3含量在70%的时候最接近最佳配比。在烧结温度过高的情况下会出现过烧现象，在1350℃下除BaTiO3含量在90%的试样没有出现熔化现象，其余均被大量熔化。86462

毕业论文关键词：BaTiO3/CoFe2O4；多铁性材料；固相烧结；最佳烧结温度； 

Abstract With the continuous progress of science and technology in today's world and the rapid development of human society, ferroelectric and ferromagnetic materials in modern science and technology are widely used, and BaTiO3/CoFe2O4 as composite multiferroic materials also have a variety of performance has been of concern to people and research, and create the enormous economic benefits。 In this paper, through the study on sintering process of BaTiO3/CoFe2O4 by solid-phase synthesis of BaTiO3 and CoFe2O4 micron powder, using ball milling mixing method BaTiO3/CoFe2O4 powder in use dry pressing molding method and solid phase sintering method to prepare BaTiO3/CoFe2O4 composite ceramic, mainly through regulating ratio and sintering temperature on to observe BaTiO3/CoFe2O4 before and after sintering size, structure were investigated。 Through a large number of experiment data that 1200℃ is the most close to BaTiO3 content in 50%, 60% and 70%, the optimum sintering temperature and 1250℃ is most close to BaTiO3 content in 80% of the optimal sintering temperature and 1300℃ is most close to BaTiO3 content in 90% of the optimum sintering temperature, and 1200℃ in the BaTiO3 content in 70% of the time the closest The best ratio。 In the case of high sintering temperature will appear over burning phenomenon, in addition to the BaTiO3 content of 1350℃ in 90% of the samples did not appear melting phenomenon, and the rest were a lot of melting。 

Key words: BaTiO3/CoFe2O4; multiferroic materials; solid state sintering; optimum sintering temperature; 

目 录

第一章 绪论 1

1。 1 引言 1

1。2 铁性材料的基本特性 2

1。3 铁电/铁磁复合材料的研究热点 3

1。4 复合多铁材料的关键技术分析 4

1。5 本课题的研究内容和手段 6

第二章 干压法制备BaTiO3/CoFe2O4陶瓷 8

2。1 粉体的合成 8

2。2 干压成型及烧结 11

2。3 不同配比的对比分析 13

2。4 测量手段及设备 14

第三章 BaTiO3/CoFe2O4的烧结及相关机制研究 16

3。1 配比对最佳烧结温度的影响 16

3。2 不同配比下材料烧结的密度与收缩率变化 20

3。3 烧结的内在机制分析