Abstract
W2N-Cu films with different Cu content ranging from 0 to 6.22at.% were deposited by reactive magnetron sputtering technique. The structure, mechanical and tribological properties were investigated by XPS, XRD, HRTEM, nano-indentation CSM, high-temperature ball-on-disc tribo-meter, Bruker 3D Profiler. The results indicated that the incorporation of copper did not affect the cubic structure. W2N-Cu films consist of W2N and Cu crystal phases. An addition of copper induced W2N crystallite size refinement accompanied by increase in hardness with a maximum at 0.9at.% Cu. At room temperature, the friction coefficient of W2N-Cu films decreased gradually and the wear rate increased with increasing Cu content. At high temperatures, the friction coefficient of W2N-Cu films decreased with increasing Cu content but the wear rate increased. Overall, the results reveal that the friction properties of W2N-Cu films, in the temperature range of 25–600°C, can be improved by addition of a copper element, but the wear resistance failed to improve under same conditions.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.