Aerosol-assisted chemical vapor deposition (AACVD) is a technique implicates the atomization of a precursor solution into fine droplets which are dragged by a hot air flow throughout mobile nozzle unto heated reaction zone where occurring chemical reactions. In this work, implementation of the mechanical, electrical and electronic components for AACVD in descriptive way is presented. Equipment and experimental methods implemented are described, together to the automatization criteria of nozzle, temperature control of the heating plate and nebulizing system. The flowchart, the logic sequence of the speed control programming and statistical analysis of the nozzle displacement control were completed and checked, therefore an adequate link between the diverse components via Arduino with the design and automatization criteria was achieved. Finally, we conclude that the criteria and automatization process used permitted successfully to make uniform and reproducible coatings.

By mean of mechanical alloying the synthesis of Bi _0.4 Sr _0.6 FeO _3–δ ceramic powders were achieved according to the stoichiometric relations of Bi ₂ O ₃, Fe ₂ O ₃ and SrCO ₃ initial powders. Then thermal treatments in air both 800 °C as 825 °C as at function on time was carried out on the processed ceramic powders, which were posteriorly characterized via X-ray diffraction and thermogravimetric. Finally, uniaxial compaction of the chosen processed powders to 800 °C was performed adding polyvinyl alcohol (PVA) or butyral alcohol (PVB) try to find a higher porosity. The milled ceramic compound presented a single cubic phase with lattice parameters of 3.95Ȧ when it was thermally treated at 800 °C and only 30 min of thermal treatment. No change on lattice parameter was found with higher treatment time. Thermogravimetric analysis showed processed powder are stable to work at the operation temperature of the solid oxide fuel cell chosen. In regard to porosity, the results showed that an adequate porosity 27 % with addition of PVB was achieved.

Se presenta en este trabajo una metodología genérica para la enseñanza de la estimación de la incertidumbre de medición de resultados experimentales. Esta metodología ha sido diseñada e implementada en los laboratorios de física que imparte el departamento de física de la Universidad Tecnológica de Pereira con el objetivo de crear una cultura alrededor de este tema. La metodología se basa en la norma GTC-51 “Guía para la expresión de la incertidumbre en las mediciones” basada en normas internacionales que actualmente son utilizadas a nivel científico, industrial y legal. Esta norma ha sido trabajada con profundidad por el grupo de electrofisiología del departamento de física de la UTP, en su línea de investigación en metrología, logrando implementarla por medio de los proyectos cofinanciados por COLCIENCIAS. Como resultado de esta experiencia se ha generado toda una cultura que propende por la expresión de los resultados experimentales con la correspondiente estimación de su incertidumbre de medición, partiendo desde el laboratorio de física I hasta los resultados que se obtienen en trabajos de grado y en desarrollos experimentales obtenidos por los grupos de investigación denuestro departamento.