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Blas, Javier García De
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Publications (7/7 displayed)
- 2022Considering Thermal Diffusivity as a Design Factor in Multilayer Hybrid Ice Protection Systemscitations
- 2019Failure analysis of the rod-end bearing of an actuating cylindercitations
- 2012Aluminum slurry coatings to replace cadmium for aeronautic applicationscitations
- 2011HVOF-Deposited WCCoCr as Replacement for Hard Cr in Landing Gear Actuatorscitations
- 2004Vacuum tribological behaviour of self-lubricating quasicrystalline composite coatingscitations
- 2002Characterisation of Tribological Quasicrystalline Composite Coatings
- 2001Thermal spray coatings for molten carbonate fuel cells separator platescitations
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article
Aluminum slurry coatings to replace cadmium for aeronautic applications
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.