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DS: Fachverband Dünne Schichten

DS 4: Thin Film Properties I

DS 4.2: Talk

Monday, March 27, 2023, 15:45–16:00, SCH A 316

Co-electrodeposition of compositionally complex Co-Cr-Fe-Mo-Ni alloy thin films — •Hongshuai Li, Martin Peterlechner, and Gerhard Wilde — Institute of Materials Physics, University of Münster, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany

A compositionally complex Co-Cr-Fe-Mo-Ni alloy with a face-centered cubic structure was successfully obtained by electrochemical deposition using a constant current density. An aqueous electrolyte with several additives was developed to accomplish the electrodeposition of films onto Cu substrates. The characterization reveals that the deposited films are metallic with a face-centered cubic structure, including impurities incorporated during deposition. In addition, mechanical tests were performed to study adhesion and hardness by nano-scratch tests and nanoindentation. Mechanical tests show a high hardness and nonetheless microscopically ductile behavior. The electrolytes developed in this study may be a promising approach for the electrodeposition of Co-Cr-Fe-Mo-Ni compositionally complex alloy coatings.