ZnO varistors with non-linearity coefficients reaching 50 and low values of the leakage current (approximately 0.01 A/m2), were obtained by a method referred to as `direct mixing of constituent phases'. The method is based on sintering of a mixture of the constituent phases with the following compositions: ZnO phase uniformly doped with Co2+ and Mn2+; intergranular phase: γ-Bi2O3 stabilized with Mn2+ or Zn2+; spinel phase: Zn1.971Ni0.090Co0.030Cr0.247Mn0.090Sb0.545O4. As proved, the obtained varistors are composed of the same phases as those introduced into the system. The influence of composition as well as milling and sintering parameters on the varistor characteristics were investigated. Some varistor powder mixtures were intensively milled before sintering. As a result, high density ceramics with highly homogeneous microstructure were obtained after sintering.
TY - JOUR
AU - Branković, Zorica
AU - Milošević, Olivera
AU - Poleti, Dejan
AU - Karanović, Ljiljana
AU - Uskoković, Dragan
PY - 2000
UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5325
AB - ZnO varistors with non-linearity coefficients reaching 50 and low values of the leakage current (approximately 0.01 A/m2), were obtained by a method referred to as `direct mixing of constituent phases'. The method is based on sintering of a mixture of the constituent phases with the following compositions: ZnO phase uniformly doped with Co2+ and Mn2+; intergranular phase: γ-Bi2O3 stabilized with Mn2+ or Zn2+; spinel phase: Zn1.971Ni0.090Co0.030Cr0.247Mn0.090Sb0.545O4. As proved, the obtained varistors are composed of the same phases as those introduced into the system. The influence of composition as well as milling and sintering parameters on the varistor characteristics were investigated. Some varistor powder mixtures were intensively milled before sintering. As a result, high density ceramics with highly homogeneous microstructure were obtained after sintering.
PB - Sendai : Japan Institute of Metals
T2 - Materials Transactions, JIM
T1 - ZnO varistors prepared by direct mixing of constituent phases
EP - 1231
IS - 9
SP - 1226
VL - 41
DO - 10.2320/matertrans1989.41.1226
UR - https://hdl.handle.net/21.15107/rcub_dais_3865
ER -
@article{
author = "Branković, Zorica and Milošević, Olivera and Poleti, Dejan and Karanović, Ljiljana and Uskoković, Dragan",
year = "2000",
abstract = "ZnO varistors with non-linearity coefficients reaching 50 and low values of the leakage current (approximately 0.01 A/m2), were obtained by a method referred to as `direct mixing of constituent phases'. The method is based on sintering of a mixture of the constituent phases with the following compositions: ZnO phase uniformly doped with Co2+ and Mn2+; intergranular phase: γ-Bi2O3 stabilized with Mn2+ or Zn2+; spinel phase: Zn1.971Ni0.090Co0.030Cr0.247Mn0.090Sb0.545O4. As proved, the obtained varistors are composed of the same phases as those introduced into the system. The influence of composition as well as milling and sintering parameters on the varistor characteristics were investigated. Some varistor powder mixtures were intensively milled before sintering. As a result, high density ceramics with highly homogeneous microstructure were obtained after sintering.",
publisher = "Sendai : Japan Institute of Metals",
journal = "Materials Transactions, JIM",
title = "ZnO varistors prepared by direct mixing of constituent phases",
pages = "1231-1226",
number = "9",
volume = "41",
doi = "10.2320/matertrans1989.41.1226",
url = "https://hdl.handle.net/21.15107/rcub_dais_3865"
}
Branković, Z., Milošević, O., Poleti, D., Karanović, L.,& Uskoković, D.. (2000). ZnO varistors prepared by direct mixing of constituent phases. in Materials Transactions, JIM
Sendai : Japan Institute of Metals., 41(9), 1226-1231.
https://doi.org/10.2320/matertrans1989.41.1226
https://hdl.handle.net/21.15107/rcub_dais_3865
Branković Z, Milošević O, Poleti D, Karanović L, Uskoković D. ZnO varistors prepared by direct mixing of constituent phases. in Materials Transactions, JIM. 2000;41(9):1226-1231.
doi:10.2320/matertrans1989.41.1226
https://hdl.handle.net/21.15107/rcub_dais_3865 .
Branković, Zorica, Milošević, Olivera, Poleti, Dejan, Karanović, Ljiljana, Uskoković, Dragan, "ZnO varistors prepared by direct mixing of constituent phases" in Materials Transactions, JIM, 41, no. 9 (2000):1226-1231,
https://doi.org/10.2320/matertrans1989.41.1226 .,
https://hdl.handle.net/21.15107/rcub_dais_3865 .
