1. Microstructural and Mechanical Properties of Cr-Ni3Al Alloy Films Synthesized by Magnetron Sputtering.
- Author
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Tiwari, Sunil Kumar, Rao, Akula Umamaheswara, Kharb, Archana Singh, Chawla, Vipin, Pandey, Jitendra Kumar, Saxena, Vikas, Sardana, Neha, Avasthi, Devesh Kumar, and Chawla, Amit Kumar
- Subjects
CONTACT angle ,DC sputtering ,YOUNG'S modulus ,MAGNETRON sputtering ,SURFACE roughness - Abstract
Cr-Ni
3 Al alloy films have been deposited on Si (100) substrate via DC magnetron sputtering. The effect of Cr enrichment on microstructure and mechanical properties has been studied. The evolution of phases, microstructure, surface topography and mechanical properties has been studied using GI-XRD, FE-SEM, AFM and quasi-static nanoindentation, respectively. Results revealed that the alloy films possessed a preferred orientation of (111) plane with a maximum hardness and Young's modulus of ~ 12.7 GPa and ~ 203 GPa for 0 W Cr-Ni3 Al films which further decreased to ~ 7 GPa and 129 GPa, respectively, for 40 W Cr-Ni3 Al films. The reported values of hardness and Young's modulus are very high in the case of alloy Ni3 Al-based coatings when compared with the literature. This study also imitates that with the increase in Cr concentration in the host Ni3 Al matrix, the surface roughness increased as a result of the evolution of pores. However, hydrophobicity is observed to be increased with increase in Cr concentration in host Ni3 Al coatings with a maximum contact angle of 115.9° for 40 W Cr-Ni3 Al alloy film. [ABSTRACT FROM AUTHOR]- Published
- 2024
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