Services on Demand
Journal
Article
Indicators
Cited by SciELO
Access statistics
Related links
Cited by Google
Similars in SciELO
Similars in Google
Share
Revista Facultad de Ingeniería Universidad de Antioquia
Print version ISSN 0120-6230
Abstract
OCHOA-MUNOZ, Yasser Halil; AGUILAR-PAZ, Carol Julieth and RODRIGUEZ-PAEZ, Jorge Enrique. Effect of shaping method on the densification of SnO2 ceramic pieces. Rev.fac.ing.univ. Antioquia [online]. 2014, n.73, pp.111-123. ISSN 0120-6230.
Tin oxide, SnO2, has a big technological importance. For its uses it is of great interest to optimize the sintering conditions to obtain an adequate densification, microstructure and mechanical properties, depending on the technological application. In this paper, ceramic powders of SnO2 obtained by controlled precipitation method were sintered. Powders were shaped to obtain ''green'' pieces using both pressing and by the casting method (''slip casting'') for this. For the slip casting method was realized a careful study of SnO2 suspensions to obtain a stable slurry. For determine the effect of shaping methods on the densification of pieces, were obtained important information analyzing the results of curves of weight loss, shrinkage and densification, as temperature functions, of the different samples. Finally, the sintered pieces were characterized using SEM to know their microstructure. The shaped pieces using colloidal method showed the higher density values (ρ = 4.2 ± 0.2 g/cm3). These samples showed a uniform microstructure with very small pores. These characteristics would allow their use as membranes or gas sensors.
Keywords : Tin oxide; pressing; slip casting; sintering; densification.