Characterisation of coloured coatings on AISI 304

Authors

  • J. López ACERINOX
  • E. Blanco ACERINOX
  • J. Botella ACERINOX
  • L. Esquivias Dpto. de Física de la Materia Condensada. Fac. de Ciencias. Univ. de Cádiz

DOI:

https://doi.org/10.3989/revmetalm.1998.v34.iExtra.719

Keywords:

Anticorrosive coating, AISI 304, Ellipsometry, Colouring

Abstract


A common method for obtaining colour coatings on stainless steel surfaces is by dipping in strongly oxidizing solutions (H2SO4-CrO3) at 70°C. This work improves the knowledge of these coatings by means of techniques that were not available some years ago, such as ellipsometry, to determine the refraction index and the thickness, and atomic field microscopy (AFM), to observe the coloured surface. From these techniques, it is possible to state that films are formed by an aggregation of particle ranging in size from 5 to 15 nm, the interstices are pores of approximately 5 nm diameter.

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Published

1998-05-30

How to Cite

López, J., Blanco, E., Botella, J., & Esquivias, L. (1998). Characterisation of coloured coatings on AISI 304. Revista De Metalurgia, 34(Extra), 105–108. https://doi.org/10.3989/revmetalm.1998.v34.iExtra.719

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