Corrosion behaviour of high-power laser coatings
Keywords:Laser coatings, Electrochemical corrosion, Oxidation, Stainless steel
Stainless steels present high corrosion resistance but oxidation problems can appear at high temperature. Possible solutions could be the application of coatings by high power laser. Laser-cladding experiments have been performed with NiCrAl- ZrO2/Y2O3 powder on stainless steel substrates. The influence of the powder feed rate and the laser scanning speed has been investigated. The best processing conditions have been determined by evaluating microstructure, high temperature oxidation resistance and corrosion resistance.
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