Abstract
Mo-Ag-N coatings were prepared by d.c. magnetron sputtering technique from a Mo target with embedded Ag pellets, followed by vacuum annealing at 425, 500, and 600 °C, respectively, for 1 h. SEM, EDS, XRD, nanoindenter, and micro–macro tribometer were used to investigate the influence of Ag content and annealing temperature on their microstructure, surface morphology and mechanical properties. Results demonstrated that as-deposited Mo-Ag-N coatings consisted of fcc γ-Mo2N phase and fcc Ag phase where Ag uniformly distributed into Mo-N matrix. The hardness of Mo-Ag-N coatings initially increased and then decreased with Ag content, reaching the maximum hardness of 32 GPa at 4 at.% Ag, whereas friction coefficient decreased monotonously with Ag content increasing. With the increase of annealing temperature hardness, friction coefficient, and wear resistance were decreased due to the accumulation of a large amount of Ag agglomerates onto surface resulted from high temperature intriguing phase segregation and diffusion.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
