INFLUENCE OF THERMAL SPRAY PARAMETERS ON THE MICROSTRUCTURE OF ZIRCONIA-ALUMINA AND ZIRCONIA-CERIA COATINGS USED AS THERMAL BARRIER

Authors

  • Andres Giovanni Gonzalez Hernandez Universidad de Antioquia, Departamento de Ingeniería de Materiales, Grupos GIPIMME-GIMACYR, Medellín, Antioquia. Calle 67 Nro 53-108, bloque 18-oficina 18-138, Universidad de Limoges - SPCTS, 123 Avenue Albert Thomas 87060 Limoges, France
  • María Esperanza  López Gómez Profesora Titular Departamento de Ingeniería de Metalurgía y Materiales Facultad de Ingeniería Universidad de Antioquia
  • John Dairo Henao Penenrey Estudiante de Ingeniería de Metalurgía y Materiales. Facultad de Ingeniería Universidad de Antioquia
  • Andrés Felipe Diaz Guarin
  • Fabio Vargas Galvis Profesora Titular Departamento de Ingeniería de Metalurgía y Materiales Facultad de Ingeniería Universidad de Antioquia

Abstract

The influence of the spraying parameters on the microstructure of ZrO2 – 36 wt.% Al2O3 y ZrO2 – 17wt.% CeO2 coatings was evaluated. The coatings were produced by oxyacetylene flame spraying on substrates of AISI 1020 carbon steel, which had a previous deposited bond coat of 90 wt.% Ni – 5 wt.% Al – 5 wt.% Mo. The studied variables were the standoff distance between the torch and the substrate (7.5, 10 and 12.5 cm) and the influence of two commercial powders: Eutectic Castolin® and Saint Gobain®. It was established that the internal morphology of the powders has a high influence on the microstructure of the coatings while, the spraying distance has a great influence on the microhardness and the porosity of the obtained zirconia-alumina and zirconia-ceria coatings.

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Author Biography

Andrés Felipe Diaz Guarin

Profesora Titular Departamento de Ingeniería de Metalurgía y Materiales Facultad de Ingeniería Universidad de Antioquia

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Published

2012-09-14

How to Cite

Gonzalez Hernandez, A. G.,  López Gómez, M. E., Henao Penenrey, J. D., Diaz Guarin, A. F., & Vargas Galvis, F. (2012). INFLUENCE OF THERMAL SPRAY PARAMETERS ON THE MICROSTRUCTURE OF ZIRCONIA-ALUMINA AND ZIRCONIA-CERIA COATINGS USED AS THERMAL BARRIER. LatinAmerican Journal of Metallurgy and Materials, 272–281. Retrieved from https://www.rlmm.org/ojs/index.php/rlmm/article/view/350

Issue

2013, 33(2)

Section

Regular Articles

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