OBTENTION AND CHARATERIZATION OF ALUMINIUM COATING WITH INCORPORATION OF SILICON ON FERRITIC –MARTENSITIC STEELS (HCM-12A) THROUGH CVD-FBR TECHNOLOGY

Authors

  • Francisco Javier Bolivar Osorio Universidad de Antioquia
  • Laura Sanchez Garcia CIEMAT
  • Maria Del Pilar Hierro de Bengoa Universidad Complutense
  • Francisco Javier Perez Trujillo Universidad Complutense

Abstract

Protective coatings are often applied in order to increase the corrosion and oxidation resistance of ferritic-martensitic steels. In this study, Al-Si protective coatings were deposited by Chemical Vapour Deposition in a Fluidized Bed Reactor in atmospheric pressure (CVD-FBR) on HCM-12 ferritic martensitic steels. The initial process parameters were optimized by thermodynamic simulation using Thermocalc® software. Then, those parameters were used as a first approximation in the experimental procedure to obtain the Al-Si coating.  The coating was obtained at moderate temperatures in order to keep unchanged the mechanical properties of the substrate. A study of the microstructure and composition of the coating was carried out, using scanning electron microscopy with EDS and X-ray diffraction (XRD) techniques. Long term oxidation tests were performed during 1000 hours in 100% steam vapour atmosphere at 650 ºC. The Fe – Al intermetallic coatings containing Si were obtained and these coating exhibited an oxidation behaviour far superior compared to the uncoated samples.

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Author Biographies

Francisco Javier Bolivar Osorio, Universidad de Antioquia

Profesor del departamento de Ingenieria Materiales

Laura Sanchez Garcia, CIEMAT

Investigadora del CIEMAT

Maria Del Pilar Hierro de Bengoa, Universidad Complutense

Profesora Titular de la Universidad Complutense de Madrid

Francisco Javier Perez Trujillo, Universidad Complutense

Profesor catedratico de la Universidad Complutense de Madrid

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Published

2012-08-20

How to Cite

Bolivar Osorio, F. J., Sanchez Garcia, L., Hierro de Bengoa, M. D. P., & Perez Trujillo, F. J. (2012). OBTENTION AND CHARATERIZATION OF ALUMINIUM COATING WITH INCORPORATION OF SILICON ON FERRITIC –MARTENSITIC STEELS (HCM-12A) THROUGH CVD-FBR TECHNOLOGY. LatinAmerican Journal of Metallurgy and Materials, 225–232. Retrieved from https://www.rlmm.org/ojs/index.php/rlmm/article/view/284

Issue

2013, 33(2)

Section

Regular Articles

License

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