Now showing items 11-20 of 679
Electrical and micro structural properties of (Zn, Nb, Fe)-doped SnO2 varistor systems
(Elsevier B.V., 2005-01-01)
The electrical and microstructural properties of SnO2-based varistors with the addition of 0.025 and 0.050 mol% of Fe2O3 have been characterised. Electric field (E) versus current density (J) curves showed that the effect ...
Effect of doping method on microstructural and defect profile of Sb-BaTiO3
Electrical properties in BaTiO3 based ceramics are strongly dependent on composition and microstructural development. In this work, we studied the effect of the particle coating as doping method on microstructure and ...
Sintering of tin oxide processed by slip casting
Sintering of SnO 2 compacts, obtained through slip casting, was studied by means of dilatometry, Hg porosimetry, scanning electron microscopy, and density measurement (Archimedes method). Sintering is strongly influenced ...
Temperature and stoichiometry effect on microstructural and ferroelectric properties of Pb(Zr1-xTix)O3 thin films prepared by chemical soulution deposition
Lead zirconate titanate (PZT) solutions were prepared using a polymeric precursor method, Zr n-propoxide and Ti i-propoxide were used as starting materials with ethylene glycol and water as solvents. The PZT solution was ...
Acid gelation of gellan: Effect of final pH and heat treatment conditions
(Elsevier Sci LtdOxfordInglaterra, 2007)
Engineering of surface microstructure transformations using high rate severe plastic deformation in machining
(Bogotá - UniandesDoctorado en IngenieríaFacultad de Ingeniería, 2015)
Engineering surface stuctures especially at the nanometer length-scales can enable fundamentally new multifunctional property combinations, including tunable physical, mechanical, electrochemical and biological responses. ...
Microstructure and mechanical properties of microalloyed steel forgings manufactured from cross-wedge-rolled preforms
(Pergamon-elsevier Science LtdOxfordInglaterra, 2006)