Results 91 to 100 of about 2,040 (221)

KONTROLLÜKİMYASAL ÇÖKT{}RME YÖNTEMİ İLE ÜRETİLEN YÜKSEK VOL TAJ.LI Zn O \7 ARİSTÖRLERİN MİKROYAPISAL ÖZELI.�İKLERİNİN İNCELENMESİ

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2003
ZnO esaslı varistörl e r çok bileşenli yarı iletkenseraınil\lerdir. Çok bileşe nli ollt;sit seranıiklerinelektrik s el da,ıra nışları hen1 malzemeninmikroyapısına henı de ZnO t a n e sınırlarında oluianürünlerin yapısına bağlidır.
Özlem YÜKSEL   +2 more
doaj   +1 more source

The Effects of Electrical Degradation on the Microstructure of Metal Oxide Varistor [PDF]

open access: yes, 2001
In this paper, the findings from systematic experiments with the purpose to determine the degradation effect of single and multiple current pulses on the microstructure of the Metal Oxide (MO) varistor are described. Six distribution class varistors from
Mardira, K. P.   +2 more
core  

A systematic review for computer based observational techniques for assessing exposure to risk factors for work-related musculoskeletal disorders [PDF]

open access: yes, 2018
The objective of this review are to systematically examine the existing techniques of computer based observational method for assessing Work-related musculoskeletal disorders (WMSDs) and analysed them to the needs of different potential users.
Abdol Rahman, Mohd Nasrull   +1 more
core   +1 more source

The effect of Sm2O3 on the sintering and grain growth behaviors of SnO2-based ceramics [PDF]

open access: yes, 2019
The effect of samarium oxide was examined on the sintering, microstructure, and grain growth behaviors of (Co, Nb)-doped SnO2-based ceramics prepared by co-precipitation method.
Bastami, Hajieh   +3 more
core   +1 more source

Influence of processing parameters on microstructure and electrical properties of ZnO-based varistor ceramics

open access: yesDiscover Electronics
ZnO-based varistors are widely used in electrical equipment for surge protection. This research explores the influence of sintering parameters—such as sintering temperature, ramp rate and soaking time—on microstructure development and V-I characteristics
Muhammad Hassan   +3 more
doaj   +1 more source

Origin of solid-state activated sintering in BiO₂₃-doped ZnO. [PDF]

open access: yes, 1999
Thesis (S.M.)--Massachusetts Institute of Technology, Dept.
Luo, Jian, 1971-
core  

Dielectric spectra of ZnO varistor ceramics

open access: yesActa Physica Sinica, 2012
In this paper, the dielectric spectra of ZnO varistor ceramics are measured by Novocontrol wide band dielectric spectrometer in a temperature range of -160℃-200℃ and frequency range of 0.1 Hz-0.1 MHz. It is found that electron transportation can be characterized by the flat region on a low frequency side of σ'-f curve.
null Cheng Peng-Fei   +2 more
openaire   +1 more source

Características microestructurales de varistores del sistema ZnO-BaO-P2O5

open access: yesBoletín de la Sociedad Española de Cerámica y Vidrio, 1999
Ceramic materials based on the system ZnO-BaO show a great potential for varistor applications. However, the BaO rich phase located at the grain boundaries shows high solubility in water which causes severe damage of the materials.
Fernández, J. F.   +5 more
doaj  

Sample preparation and varistor physical properties measurement of ZnO+0.01Sb2O3 [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2003
The disc-shape ZnO+0.01Sb2O3 samples were prepared by standard ceramic techniques. The sample indicates white colour and was characterized by XRD. The prepared sample is varistor which shows breakdown field strength of 87.18 V/mm and non-linearity ...
Juggaroen, N, Casol, W., Panmatarith, T.
doaj  

Cold-Sintered ZnO Ceramic Composites Co-Doped with Polytetrafluoroethylene and Oxides. [PDF]

open access: yesMolecules, 2023
Xiao Y   +7 more
europepmc   +1 more source

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