Propriedades elétricas e microestruturais de varistores à base de SnO2 sinterizados por microondas [PDF]
, 2012 An investigation was made of the microstructural and electrical properties of SnO2-based varistors microwave sintered at 1200 ºC, applying a heating rate of 120 ºC/min and treatment times of 10, 20, 30, 40, 50 and 60 min.
Furtado, Péricles de Sousa +5 more
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Estudio del envejecimiento de dispositivos electrónicos: varistores y LEDs [PDF]
, 2016 In this project presented a study of the degradation through accelerated tests of LEDs and varistors. This degradation is measured based on Sr, the irreversible entropy that is generated during testing.
Yao, Jiaqiang
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Processing parameters for ZnO-based thick film varistors obtained by screen printing
Boletín de la Sociedad Española de Cerámica y Vidrio, 2006 Thick film varistors based on the ZnO-Bi2O3-Sb2O3 system have been prepared by screen printing on dense alumina substrates. Different processing parameters like the paste viscosity, burn out and sintering cycles, green and sintered thickness, have been ...
de la Rubia, M. A. +9 more
doaj
Control of Varistor Voltage by Grain-size Control of Bi-added ZnO Varistors
IOP Conference Series: Materials Science and Engineering, 2011 Relationship between the grain size of ZnO and the amounts of Bi and Sb for Bi-Ba-Sb-Co-Mn-added ZnO was investigated. The amount of Bi at which the grain size of ZnO became the maximum shifted to the notably larger one by adding small amount of Sb such as 0.01 mol%.
Ai Fukumori +3 more
openaire +1 more source
Laboratorio de materiales cerámicos estructurales. División cerámicos-INTEMA [PDF]
, 2006 Se presentan la localización geográfica, organización,actividades y facilidades de la División Cerámicos del INTEMA y, en particular, del Laboratorio de materiales cerámicos estructurales.
Camerucci, Maria Andrea +2 more
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Revista EIASe reporta un estudio comparativo de productos existentes en el mercado, para definir criterios con respecto a los cuales se puedan comparar muestras obtenidas en investigación de varistores o definir estándares de control de calidad para consumidores ...
Eugenio Giraldo +2 more
doaj
Análisis de varistores mediante STM y STS
Boletín de la Sociedad Española de Cerámica y Vidrio, 2002 ZnO-Varistors have been studied by scanning tunnelling microscopy and spectroscopy. Tunnelling current-voltage characteristics indicate that grains present a rectifying behaviour.
Castro, M. S. +2 more
doaj
Inspección del sistema de iluminación y fuerza de la Institución Educativa Pablo Emilio Cardona a la luz del retie y el retilap [PDF]
, 2015 Esta inspección se hace primero para velar por la seguridad de las personas por encima de todo y para verificar si la institución educativa Pablo Emilio Cardona consta con los requisitos estipulados por el RETIE y el RETILAP ya que la parte eléctrica de ...
Acevedo Vallejo, Jehison Andrés +2 more
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Características microestructurales de varistores del sistema ZnO-BaO-P2O5
Boletín 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
Crescimento e caracterização de fibras de TiO2 e nano/microcristais de ZnO [PDF]
, 2010 Mestrado em FísicaNeste trabalho foram crescidas fibras de dióxido de titânio, através da técnica de fusão de zona com laser, bem como nano e microcristais de óxido de zinco, através do método de deposição de fluxo assistido por laser.
Rodrigues, Joana Catarina Ferreira
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