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http://dx.doi.org/10.4313/JKEM.2003.16.10.897

Microstructure and Varistor Characteristics of ZnO-Pr6O11-CoO-Cr2O3-Dy2O3-Based Varistors  

남춘우 (동의대학교 전기공학과)
박종아 (동의대학교 전기공학과)
김명준 (동의대학교 전기공학과)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.16, no.10, 2003 , pp. 897-901 More about this Journal
Abstract
The microstructure and varistor characteristics of ZnO-Pr$_{6}$O$_{11}$-CoO-Cr$_2$O$_3$-Dy$_2$O$_3$(ZPCCD)-based ceramics were investigated with Dy$_2$O$_3$ content in the range of 0.0∼2.0 mol%. As Dy$_2$O$_3$ content is increased, the average grain size was decreased in the range of 18.6∼4.7 $\mu$m and the density was decreased in the range of 5.53∼4.34 g/cm$^3$. While, the varistor voltage was increased in the range of 39.4∼436.6 V/mm and the nonlinear exponent was in the range of 4.5-66.6 with increasing Dy$_2$O$_3$ content. The addition of Dy$_2$O$_3$ highly enhanced the nonlinear properties of varistors, compared with the ceramics without Dy$_2$O$_3$ Particularly, the ceramics with Dy$_2$O$_3$ content of 0.5 mol% exhibited the highest nonlinearity, in which the nonlinear exponent is 66.6 and the leakage current is 1.2 $\mu$A.A.A.
Keywords
ZPCCD-based varistors; Electrical characteristics; Nonlinear exponent; Nonlinearity;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
1 <TEX>$ZnO-Pr_{6}O_{11}-CoO-Cr_{2}O_{3}-Y_{2}O_{3}$</TEX>계 바리스터 세라믹스의 전기적특성 /
[ 남춘우;김향숙 ] / 전기전자재료학회논문지   과학기술학회마을
2 ZPCCY계 바리스터 세라믹스의 DC 가속열화 특성에 미치는 냉각속도의 영향 /
[ 남춘우;김향숙 ] / 전기전자재료학회논문지   과학기술학회마을   DOI   ScienceOn
3 Effect of <TEX>$Pr_{6}O_{11}/CoO$</TEX> mole ratio on nonlinear properties and DC accelerated aging characteristics of <TEX>$ZnO-Pr_{6}O_{11}-CoO-Dy_{2}O_{3}$</TEX> based varistors /
[ C.W.Nahm;H.S.Kim ] / Mater. Lett.   DOI   ScienceOn
4 Micro structure and crystal phases of praseodymium in zinc oxide varistor ceramics /
[ Y.S.Lee;K.S.Liao;T.Y.Tseng ] / J. Amer. Ceram. Soc.   DOI   ScienceOn
5 Microstructure and electrical properties of <TEX>$Y_{2}O_{3}$</TEX> doped <TEX>$ZnO-Pr_{6}O_{11}$</TEX>-based varistor /
[ C.W.Nahm ] / Mater. Lett.   DOI   ScienceOn
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7 The nonlinear properties and stability of <TEX>$ZnO-Pr_{6}O_{11}-CoO-Cr_{2}O_{3}-Er_{2}O_{3}$</TEX> ceramic varistors /
[ C.W.Nahm ] / Mater. Lett.   DOI   ScienceOn
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[ こュ-ヶラスシ-リズ 編集委員會 ] / 半導休 セラミクスと その應用
10 Compositional effects on the liquid-phase sintering of praseodymium oxides-based zinc oxides varistors /
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11 The effect of liquid-phase sintering on the properties of <TEX>$Pr_{6}O_{11}$</TEX>- based ZnO varistors /
[ A.B.Alles;V.L.Burdick ] / J. Appl. Phys.   DOI
12 Highly stable electrical properties of <TEX>$ZnO-Pr_{6}O_{11}-CoO-Cr_{2}O_{3}-Y_{2}O_{3}$</TEX>-based varistor cearmics /
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13 Lineal intercept technique for measuring grain size in two-phase polycrystalline ceramics /
[ J.C.Wurst;J.A.Nelson ] / J. Amer. Ceram. Soc.   DOI
14 Effect of sintering temperature on electrical properties and stability of <TEX>$Pr_{6}O_{11}$</TEX>-based ZnO varistors /
[ C.W.Nahm;B.C.Shin ] / Mater. Electron.   DOI   ScienceOn
15 /
[ -ノ瀨 昇 ] / 電子セラミクス
16 Influence of cooling rate on stability of nonlinear properties of <TEX>$ZnO-Pr_{6}O_{11}$</TEX>-based varistor ceramics /
[ C.W.Nahm;H.S.Kim ] / Mater. Lett.   DOI   ScienceOn
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[ 電氣學會 ] / 電氣學會技術報告, 第474號
18 <TEX>$Pr_{6}O_{11}$</TEX>계 ZnO 바리스터의 DC 가속열화 스트레스에 따른 전기적, 유전적 거동에 미치는 소결온도의 영향 /
[ 남춘우;정영철;김향숙 ] / 전기전자재료학회논문지   과학기술학회마을   DOI   ScienceOn