The Influence of CVD-FBR Coatings on HCM12 Corrosion Behaviour under Molten Salt Conditions

Abstract:

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The influence of Al and Al-Si coatings on the corrosion behaviour of HCM12 in molten KCl-ZnCl2 mixture at 650°C in air has been characterized by electrochemical impedance spectroscopy (EIS). Al and Al/Si protective coatings were developed by chemical vapour deposition in fluidized bed reactor (CVD-FBR) at moderate temperature to respect to mechanical properties of substrate. Scanning electron microscopy (SEM) was used to analyse the damage on the HCM12 electrode surface. Al-Si coating was found to be more resistant to the molten chlorides attack than Al coating; and both coatings increased the corrosion resistance of HCM12 in these conditions. The surface composition has been determined by X-ray diffraction (XRD).

Info:

Periodical:

Defect and Diffusion Forum (Volumes 289-292)

Edited by:

A. Agüero, J.M. Albella, M.P. Hierro, J. Phillibert and F.J. Pérez Trujillo

Pages:

469-476

DOI:

10.4028/www.scientific.net/DDF.289-292.469

Citation:

J. Nieto et al., "The Influence of CVD-FBR Coatings on HCM12 Corrosion Behaviour under Molten Salt Conditions", Defect and Diffusion Forum, Vols. 289-292, pp. 469-476, 2009

Online since:

April 2009

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$35.00

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