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中文摘要：
研究Y2O3添加量与低温保温温度对BaTiO3基正温热敏电阻（PTCR）陶瓷性能的影响。采用固相法制备BaTiO3基PTCR陶瓷。采用X线衍射仪（XRD）、扫描电子显微镜（SEM）分析陶瓷的相组成及微观形貌。结果表明：低温保温温度为1 045℃,Y2O3的添加量（摩尔分数）为026%时,陶瓷的温度系数α为0116℃^-1,升阻比lg（ρmax/ρRT）为41,耐电压强度（E）为76 V/mm。当低温保温温度升至1 090℃时,其耐电压强度升至126 V/mm。
英文摘要：
The effects of Y203 addition and soaking temperature on the properties of the BaTiO3-based positive temperature coefficient of resistance （PTCR） ceramics were analyzed.A series of BaTiO3-based PTCR ceramics were prepared by solid state reaction method. The phase composition and the microstructure of the ceramics were investigated by X-ray diffraetometer （XRD） and scanning electron microscope （SEM）, respectively.Results showed that the optimal Y203 mol content was 0. 26% while the ceramics was soaked at 1 045℃,the temperature coefficient of resistance ot was 0. 116 ℃^-1 ,the ratio of lg（ρmax/ρRT） was 4. 1 and the withstand voltage strength （E） was 76 V/mm. When the soaking temperature was 1 090℃,the withstand voltage strength increased to 126 V/mm.
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