Results 51 to 60 of about 2,272 (222)

Effect of sintering temperature on microstructure and nonlinear electrical characteristics of ZnO varistor [PDF]

Journal of Advanced Dielectrics, 2018
The nonlinear properties of ZBMCCS-based varistors, which are composed of ZnO–Bi2O3–MnO2–Cr2O3–Sb2O3–Co3O4 and SiO2 are studied inrelation to sintering temperature, in the range of 1280–1350∘C.
Ahmed Bouchekhlal, Farida Hobar
doaj   +1 more source

Abnormal Expansion Along the Synthesis of Zinc Stannate: A Way for Porous Ceramics Without Addition of Pore Generators

Journal of the American Ceramic Society, Volume 109, Issue 2, February 2026.
The abnormal expansion associated with the simultaneous synthesis and sintering of Zn2SnO4 from ZnO and SnO2 is due to the reaction mechanism and correlated with the conversion. This phenomenon opens the way to manufacture porous ceramics without the addition of pore generators, simplifying the process, and especially the thermal treatment.
María José Orts, Eugeni Cañas, Valentín Pérez‐Herranz, Sergio Mestre   +3 more
wiley   +1 more source

The Role of Polypyrrole in Electrical Properties of ZnO-Polymer Composite Varistors [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 2017
Composite films on the base of ZnO with different weight percentages of polypyrrole have been prepared using the hot pressing method and their current-voltage characteristics have been studied. Results show that the films have nonlinear varistor behavior
Nasim Asaadi, Mojtaba Parhizkar, Sajedeh Mohammadi Aref, Hassan Bidadi   +3 more
doaj  

Percolation effects in dc degradation of ZnO varistors [PDF]

Journal of Advanced Dielectrics, 2015
For quantitative estimation of the degree of electrical disorder (electrical inhomogeneity) in ZnO varistor ceramics caused by a variation in the barrier height at different grain boundaries in a sample, the comparison of threshold electric fields ...
A. S. Tonkoshkur, A. B. Glot, A. V. Ivanchenko   +2 more
doaj   +1 more source

First principles study of strain/electronic interplay in ZnO; Stress and temperature dependence of the piezoelectric constants [PDF]

, 2000
We present a first-principles study of the relationship between stress, temperature and electronic properties in piezoelectric ZnO. Our method is a plane wave pseudopotential implementation of density functional theory and density functional linear ...
A. Ahmin, A. Dal Corso, A. M. Rappe, D. M. Ceperley, H. Hohenberg, H. J. Monkhorst, J. C. Phillips, J. E. Jaffe, J. E. Jaffe, J. L. Martins, J. P. Perdew, J. R. Chelikowsky, L. F. Mattheiss, L. Kleinman, M. C. Payne, M. T. Yin, N. A. Hill, Nicola A. Hill, O. H. Nielsen, P. Bendt, P. Schröer, R. E. Cohen, R. E. Cohen, R. LeSar, S. Bloom, S. G. Louie, U. Rossler, U. V. Waghmare, Umesh Waghmare, W. Kohn, X. Gonze, X. Gonze, X. Gonze   +32 more
core   +2 more sources

The Influence of Ni2O3 Doping Concentration on the Alternating Current Aging Characteristics of ZnO Varistor

International Journal of Ceramic Engineering &Science, Volume 8, Issue 1, January 2026.
ABSTRACT When the surge arrester is subjected to the working voltage for an extended period, it undergoes alternating current (AC) aging, which degrades the arrester's parameters and affects the safety of the power grid. Ni2O3 is an important additive in the ZnO varistor formulation, and its doping ratio significantly influences the performance of the ...
Lei Wang, Jian Zhang, Wenbo Yu, Lu Li, Xin Cheng   +4 more
wiley   +1 more source

Effect of MnO2${ ext{MnO}}_{2}$ doping on AC aging characteristics of varistor in arrester

International Journal of Ceramic Engineering & Science
As the core component of lightning arrester, the performance of ZnO varistor directly affects the protection level of lightning arrester. Under the action of long‐term AC voltage, the varistors are prone to AC aging, which leads to the deterioration of ...
Zhengzheng Fu, Zongxi Zhang, Songhai Fan, Tao Cui, Donghui Luo, Yiping Jiang, Pengfei Meng, Jingke Guo, Yue Yin   +8 more
doaj   +1 more source

Comparative study of two synthesis methods to obtain ZnO-Pr2O3-CoO ceramic powders [PDF]

, 2004
[ES] Los polvos cerámicos de ZnO - Pr2O3 - CoO son utilizados como materia prima para la fabricación de varistores. Estos dispositivos presentan una característica corriente - voltaje altamente no lineal que permiten su uso como conmutadores de estado ...
Caballero Cuesta, Amador, Cruz, Ana Milena, Rodríguez Páez, Jorge E., Villegas, Marina, Ávila, H.   +4 more
core  

Growth Techniques for Bulk ZnO and Related Compounds

, 2011
ZnO bulk crystals can be grown by several methods. 1) From the gas phase, usually by chemical vapor transport. Such CVT crystals may have high chemical purity, as the growth is performed without contact to foreign material.
Galazka, Zbigniew, Ganschow, Steffen, Klimm, Detlef, Schulz, Detlev, Uecker, Reinhard   +4 more
core   +1 more source

Quantum resonance of nanometre-scale metal-ZnO-metal structure and its application in sensors [PDF]

, 2016
Analysis of the thickness dependence of the potential profile of the metal-ZnO-metal (MZM) structure has been conducted based on Poisson’s equation and Schottky theory.
Lijie Li, Paul Rees
core   +2 more sources