High temperature corrosion resistance of FeCr(Ni, Al) alloys as bulk/overlay weld coatings in the presence of KCl at 600 °C
Vicent Ssenteza, Johan Eklund, Imran Hanif, Jesper Liske, T. Jonsson
Abstract
The long-term high temperature corrosion behavior of FeCr(Ni, Al) alloys, both in bulk form and as overlay welds, was investigated in a new experimental setup, in the presence of KCl at 600 °C. All the alloys experienced breakaway oxidation, with the bulk materials exhibiting better corrosion resistance than the overlay weld coatings with similar compositions. All results indicate diffusion-controlled kinetics, and the analysis revealed an improved corrosion behavior connected to an increased Cr content in the inward-growing scale.
Topics & Concepts
CorrosionMaterials scienceMetallurgyOverlayDiffusionWeldingHigh-temperature corrosionKineticsThermodynamicsProgramming languageQuantum mechanicsComputer sciencePhysicsHigh-Temperature Coating BehaviorsHigh Temperature Alloys and CreepNuclear Materials and Properties