Aluminum slurry coatings to replace cadmium for aeronautic applications

Agüero, Alina; del Hoyo Gordillo, Juan Carlos; García de Blas, Javier; García, M.; Gutiérrez, M.; Madueño, L.; Ulargui, S.

Publicación:
Aluminum slurry coatings to replace cadmium for aeronautic applications

dc.contributor.author	Agüero, Alina
dc.contributor.author	del Hoyo Gordillo, Juan Carlos
dc.contributor.author	García de Blas, Javier
dc.contributor.author	García, M.
dc.contributor.author	Gutiérrez, M.
dc.contributor.author	Madueño, L.
dc.contributor.author	Ulargui, S.
dc.date.accessioned	2026-01-22T08:56:39Z
dc.date.available	2026-01-22T08:56:39Z
dc.date.issued	2012-10-27
dc.description	Highlights Cd coatings alternative ; Slurry Al coatings, low cost and easy to apply ; Corrosion resistance for aeronautic components ; Does not affect the steel substrate fatigue resistance
dc.description.abstract	Cadmium has been widely used as a coating to provide protection against galvanic corrosion for steels and for its natural lubricity on threaded applications. However, it is a toxic metal and a known carcinogenic agent, which is plated from an aqueous bath containing cyanide salts. For these reasons, the use of cadmium has been banned in Europe for most industrial applications. However, the aerospace industry is still exempt due to the stringent technical and safety requirements associated with aeronautical applications, as an acceptable replacement is yet to be found. Al slurry coatings have been developed as an alternative to replace cadmium coatings. The coatings were deposited on AISI 4340 steel and have been characterized by optical and electron microscopy. Testing included salt fog corrosion exposure, fluid corrosion exposure (immersion), humidity resistance, coating-substrate and paint-coating adhesion, electric conductivity, galvanic corrosion, embrittlement and fatigue. The results indicated that Al slurry coatings are an excellent alternative for Cd replacement.
dc.description.peerreviewed	Peerreview
dc.description.sponsorship	The authors wish to acknowledge Max Morant from Morant & Morant for his generous contribution to this project as well as the personnel of the Metallic Materials Area (MMA) and Protective Materials Laboratory in INTA, in particular F. Longo (present MMA head) for collaborating in many different ways with this project and M. Hernández for the XRD work confirming the corrosion products. The members of the RAMPE team (CESA, SENER, ITP, GUTMAR, TEKNIKER, AERNNOVA) are thanked for a very fruitful.
dc.identifier.citation	Surface and Coatings Technology 213: 229-238
dc.identifier.e-issn	0257-8972
dc.identifier.other	https://www.sciencedirect.com/science/article/abs/pii/S0257897212010225
dc.identifier.uri	https://hdl.handle.net/20.500.12666/1650
dc.language.iso	eng
dc.publisher	Elsevier
dc.relation.isreferencedby	E.W. Brooman Metal Finishing (2000) A. Conde et al. Corros. Sci. (2011) E.U. Lee et al. Q. Yu et al. Prog. Org. Coat. (2001) T.J. Carter et al. Eng. Fail. Anal. (2001) R.C. Souza et al. Surf. Coat.Technol. (2008) E. Budke et al. Surf. Coat.Technol. (1999) G. Bierwagen et al. Prog. Org. Coat. (2010) American Occupational Safety & Health Administration (OSHA) Nordic Council of Ministers D.R. Gabe Surf. Eng. (1994) D.E. Hall Plating Surf. Finishing (1983) L. Tran S.N. Indumathi et al. Metal Finishing (2011) E.N. Beck V. Holmes et al. “The Substitution of IVD Al for Cadmium”, Report ESL-TR-90-28 (May 1990) R. Mason et al. Metal Finishing (March 2010)
dc.rights.accessRights	info:eu-repo/semantics/restrictedAccess
dc.rights.license	Copyright © 2012 Elsevier B.V. All rights reserved.
dc.title	Aluminum slurry coatings to replace cadmium for aeronautic applications
dc.type	info:eu-repo/semantics/article
dc.type.coar	http://purl.org/coar/resource_type/c_2df8fbb1
dc.type.hasVersion	info:eu-repo/semantics/publishedVersion
dspace.entity.type	Publication
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