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Sintering process as relevant parameter for Bi_2O_3 vaporization from ZnO-Bi_2O_3-based varistor ceramics 被引量:10

Sintering process as relevant parameter for Bi_2O_3 vaporization from ZnO-Bi_2O_3-based varistor ceramics
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摘要 The relationship between sintering process and vaporization of the Bi2O3 in ZnO-Bi2O3-based varistor ceramics was investigated.The phase and microstructure evolution during the sintering process were examined.The results show that the higher the sintering temperature or the longer the sintering time is,the more the Bi2O3 is volatilized.The heating rate has little effects on the Bi2O3 volatilized in ZnO-Bi2O3-based varistor ceramics.This is in accordance with the relative X-ray diffraction peak area ratio analysis.The results also show that the sintering temperature has the greatest impact on the vaporization of the Bi2O3,then followed by sintering time,and the effect of the heating rate is the minimum. The relationship between sintering process and vaporization of the Bi2O3 in ZnO-Bi2O3-based varistor ceramics was investigated. The phase and microstructure evolution during the sintering process were examined. The results show that the higher the sintering temperature or the longer the sintering time is, the more the Bi2O3 is volatilized. The heating rate has little effects on the Bi2O3 volatilized in ZnO-Bi2O3-based varistor ceramics. This is in accordance with the relative X-ray diffraction peak area ratio analysis. The results also show that the sintering temperature has the greatest impact on the vaporization of the Bi2O3, then followed by sintering time, and the effect of the heating rate is the minimum.
出处 《中国有色金属学会会刊:英文版》 EI CSCD 2009年第6期1526-1532,共7页 Transactions of Nonferrous Metals Society of China
基金 Project(06DZ05902)supported by Technical Innovation Team Program of Shanghai Science and Technology Committee of China
关键词 烧结过程 压敏陶瓷 氧化锌 铋基 汽化 微观组织演变 烧结温度 烧结时间 varistor ZnO vaporization sintering process microstructure
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参考文献19

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同被引文献161

  • 1LIU Jun,HU Jun,HE JinLiang,LIN YuanHua,LONG WangCheng.Microstructures and characteristics of deep trap levels in ZnO varistors doped with Y_(2)O_(3)[J].Science China(Technological Sciences),2009,52(12):3668-3673.
  • 2赵鸣,王卫民,高峰,田长生.ZnVSb基压敏陶瓷中尖晶石相形成机理的研究[J].无机化学学报,2007,23(7):1242-1246. 被引量:2
  • 3BUENO P R,VARELA J A,LONGO E.SnO2,ZnO and related polycrystalline compound semiconductors:An overview and review on the voltage-dependent resistance (non-ohmic) feature[J].Journal of the European Ceramic Society,2008,28(3):505-529.
  • 4NAHM C W.The preparation of a ZnO varistor doped with and its properties[J].Solid State Communications,2009,149(19/20):795-798.
  • 5XU D,SHI L,WU Z,ZHONG Q,WU X.Microstructure and electrical properties of ZnO-Bi2O3-based varistor ceramics by different sintering processes[J].Journal of the European Ceramic Society,2009,29(9):1789-1794.
  • 6LAO Y W,KUO S T,TUAN W H.Effect of powder bed on the microstructure and electrical properties of Bi2O3-and Sb2O3-doped ZnO[J].Journal of Materials Science-Materials in Electronics,2009,20(3):234-241.
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  • 8PEITEADO M,de la RUBIA M A,VELASCO M J,VALLE F J,CABALLERO A C.Bi2O3 vaporization from ZnO-based varistors[J].Journal of the European Ceramic Society,2005,25(9):1675-1680.
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