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Memorias de investigación
Artículos en revistas:
Electrical Conductivity of New Zinc Phosphate Glasses/Metal Composites
Año:2012
Áreas de investigación
  • Macromoléculas y polímeros
Datos
Descripción
Zinc phosphate?glass/metal composites have been successfully prepared. Glass with composition of 45 mol% ZnO?55 mol% P2O5 (ZP) has been filled with metallic powders (nickel and cobalt). The glass matrix thermal stability has been assessed by differential thermal analysis technique. The morphology has been examined by scanning electronic microscopy, showing almost homogenous composites. Comparison between the measured and calculated densities as a function of metallic content exhibits a good coherence and allows the estimation of porosity inside the composites. X-ray diffraction analysis has revealed that the ZP-matrix phase is amorphous when the temperature treatment is below the glass transition temperature Tg. However, the principal peaks observed in the case of the composites have been assigned to the metallic crystals of nickel or cobalt fillers. It has been found that the phosphate glass phase is not affected by the growing of the metallic network. The electronic conductivity measurements versus filler volume fraction have been investigated for the first time on phosphate?glass/metal composites. This study has shown the occurrence of a conducting transition at around 30% filler volume fraction. The obtained result has been interpreted on the basis of the statistical percolation theory frame.
Internacional
Si
JCR del ISI
Si
Título de la revista
Journal of Non-Crystalline Solids
ISSN
0022-3093
Factor de impacto JCR
1,537
Información de impacto
Volumen
358
DOI
Número de revista
Desde la página
2764
Hasta la página
2770
Mes
SIN MES
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Participantes
  • Autor: Gabriel Pinto Cañon (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Polímeros, Caracterización y Aplicaciones
  • Departamento: Ingeniería Química Industrial y del Medio Ambiente
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