Aluminum slurry coatings to replace cadmium for aeronautic applications

Agüero, A. and Hoyo, J.C. del and Garcia de Blas Villanueva, Francisco Javier and García, M. and Gutiérrez, M. and Madueño, L. and Ulargui, S. (2012). Aluminum slurry coatings to replace cadmium for aeronautic applications. "Surface and Coatings Technology", v. 213 ; pp. 229-238. ISSN 0257-8972. https://doi.org/10.1016/j.surfcoat.2012.10.052.

Description

Title: Aluminum slurry coatings to replace cadmium for aeronautic applications
Author/s:
  • Agüero, A.
  • Hoyo, J.C. del
  • Garcia de Blas Villanueva, Francisco Javier
  • García, M.
  • Gutiérrez, M.
  • Madueño, L.
  • Ulargui, S.
Item Type: Article
Título de Revista/Publicación: Surface and Coatings Technology
Date: December 2012
ISSN: 0257-8972
Volume: 213
Subjects:
Freetext Keywords: Cadmium coating replacement; Aluminum slurry; Steel; Atmospheric corrosion; Aeronautical applications
Faculty: E.T.S.I. Aeronáuticos (UPM)
Department: Otro
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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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.

More information

Item ID: 14060
DC Identifier: http://oa.upm.es/14060/
OAI Identifier: oai:oa.upm.es:14060
DOI: 10.1016/j.surfcoat.2012.10.052
Official URL: http://www.sciencedirect.com/science/article/pii/S0257897212010225
Deposited by: Memoria Investigacion
Deposited on: 20 Dec 2012 11:03
Last Modified: 16 Nov 2016 07:41
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