Tag: Corrosion

Further improving the corrosion resistance of Al-based alloys for aerospace applications with Cr-free treatments

~ Matheus A. Tunes ~ Leave a comment

A great paper and research led by my friend Oscar M. Prada Ramirez recently shows that the corrosion resistance of aerospace grade Al-based alloys can be significantly improved using Ce-nanoparticles in an anodization treatment using tartaric-sulfuric acid environments! The aluminium alloy series 2xxx with its anodic layer filled with Ce nanoparticles! A pathway to reduce … Continue reading Further improving the corrosion resistance of Al-based alloys for aerospace applications with Cr-free treatments

Functionally Graded Materials for Fuel Cells Applications

~ Matheus A. Tunes ~ Leave a comment

Our paper on the corrosion resistance of constant and functionally graded TiN coatings is now online! In this paper we have discovery an interesting relationship between electron energy loss spectroscopy and corrosion resistance: functionally graded materials can be engineered so that they have a gradient of valence electrons along the coating profile. The less electrons … Continue reading Functionally Graded Materials for Fuel Cells Applications

Ce nanoparticles as a corrosion inhibitor in Al 2xxx series alloys!

~ Matheus A. Tunes ~ Leave a comment

With great pleasure I am sharing to all of you the first paper performed in collaboration with the research group of Professor Hercílio de Melo in the field of corrosion of Al alloys 2xxx series. In this paper we report that Ce-containing nanoparticles -- when stuck to the inherent porous walls of anodized layers -- … Continue reading Ce nanoparticles as a corrosion inhibitor in Al 2xxx series alloys!