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BaTiO_3铁电陶瓷时效过程中的性能稳定性研究 被引量：1

Study on property stability of BaTiO_3-based ferroelectric ceramics during ageing
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摘要 采用固相反应法制备了La2O3、Bi2O3和Ho2O3掺杂的BaTiO3基PTC热敏陶瓷元件,并对其时效特征进行了研究。结果发现,一般样品的电阻率随时效时间的增加而变大,最大增量达58%;但Bi2O3掺杂的样品出现时效反常现象,即时效初始阶段样品的电阻率随时效时间增加而减小、减少率达19.4%,其后才逐渐增大。 La2O3, Bi2O3 and Ho2O3 doped BaTiO3-based PTC ferroelectric ceramics were prepared by solid state reaction method and their ageing characteristics were investigated. The results show that resistivities of the La2O3 and Ho2O3 doped BaTiO3-based ferroelectric ceramics generally increased with the ageing time and the maximum increasing rate is 58 %. But Bi2O3-doped BaTiO3-based ferroelectric ceramics show abnormal behaviors： with increase of ageing time, their resistivities of samples decrease by 19.4 % in the initial stage, then increase gently.
作者 张鸿 李志成
机构地区 中南大学材料科学与工程学院
出处 《电子元件与材料》 CAS CSCD 北大核心 2007年第3期35-37,共3页 Electronic Components And Materials
基金 中南大学科学研究基金(人才引进基金)资助项目(76112019 76112020)
关键词 无机非金属材料 钛酸钡 固相反应法 时效特征 电性能 non-metallic inorganic materials barium titanate solid state reaction method ageing behavior： electric properties
分类号 TN373 [电子电信—物理电子学]
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参考文献8

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同被引文献16

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电子元件与材料
2007年 第3期

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