Influence of Fe impurities on structure and properties of arc-evaporated AlCrN coatings

► Synthesis of AlCrFeN coatings by cathodic arc-evaporation ► No significant effect on coating morphology and mechanical properties of up to 5 at.% Fe in target ► Reduction of oxidation onset temperature with increasing Fe content ► Retarded oxide scale growth above 1000 °C due to incorporation of Fe