| CaTiO3对(Ba,Pb)TiO3系高温PTC材料性能和显微结构的影响 |
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| 引用本文： | 方志远,沈春英,丘泰.CaTiO3对(Ba,Pb)TiO3系高温PTC材料性能和显微结构的影响[J].功能材料与器件学报,2011,17(4):427-430. |
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| 作者姓名： | 方志远 沈春英 丘泰 |
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| 作者单位： | 南京工业大学材料科学与工程学院,江苏南京,210009 |
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| 摘 要： | 本文研究了CaTiO3含量及烧成工艺对(Ba,Pb) TiO3基PTC陶瓷材料性能和显微结构的影响.结果表明CaTiO3的最佳添加量为3mol％,室温电阻率达到最小,PTC效应最好.SEM观察表明添加CaTiO3后晶粒更均匀致密.不同烧成工艺下材料性能的比较,结果表明烧成温度越高,温度系数越大,但室温电阻率也越大；降温...
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| 关 键 词： | 钛酸钙 钛酸钡 PTC 热敏陶瓷 |
Effect of CaTiO_3 Additive on the Properties and Microstructure of(Ba,Pb)TiO_3-Based PTC Materials |
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| FANG Zhi-yuan,SHEN Chun-ying,QIU Tai.Effect of CaTiO_3 Additive on the Properties and Microstructure of(Ba,Pb)TiO_3-Based PTC Materials[J].Journal of Functional Materials and Devices,2011,17(4):427-430. |
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| Authors: | FANG Zhi-yuan SHEN Chun-ying QIU Tai |
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| Affiliation: | FANG Zhi-yuan,SHEN Chun-ying,QIU Tai(College of Materials Science and Engineering,Nanjing University of Technology,Nanjing 210009,China) |
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| Abstract: | This paper studies the effect of the CaTiO3 content and the sinter temperature on the properties and microstructure of(Ba,Pb)TiO3-based PTC materials.The results show that the optimum addition level of CaTiO3 is 3 mol% with the minimum room temperature resistivity and the best PTC effect.SEM observation shows that the grain is more uniform and compact after the addition of CaTiO3.The results show that the higher the sinter temperature is,the higher the temperature coefficient is.The heat preservation of the... |
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| Keywords: | calcium titanate barium titanate PTC thermistors ceramics |
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