Document Type
Article
Publication Date
11-5-2016
Keywords
Cr2AlC coatings, MAX phase, sputtering, XRD, TEM, Mechanical properties, Ni-based superalloy, sputtering power
Digital Object Identifier (DOI)
https://doi.org/10.3390/met6110265
Abstract
Coating growth and mechanical properties of nanolamellar Cr2AlC coatings at various sputtering power were investigated in the present study. Cr2AlC coating was deposited on the IN 718 superalloy and (100) Si wafers by DC magnetron sputtering at different sputtering powers. The structure and properties were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and nanoindentation. It was found that coatings had columnar structure with nanocrystalline substructure. Deposition rate increased with the sputtering power. XRD results showed the presence of the Cr2AlC MAX phase, intermetallic AlCr2 and Cr7C3 carbide phases, along with the change in preferential coating growth orientation. TEM observations confirmed the occurrence of these phases, and the SAED patterns demonstrated significant texture of the coatings. Hardness values were measured in the range between 11–14 GPa, showing a slight increase with the sputtering power.
Rights Information
This work is licensed under a Creative Commons Attribution 4.0 License.
Was this content written or created while at USF?
Yes
Citation / Publisher Attribution
Metals, v. 6, issue 11, art. 265
Scholar Commons Citation
Naveed, Muhammad; Obrosov, Aleksei; Zak, Andrzej; Dudzinski, Wlodzimierz; Volinsky, Alex A.; and Weiß, Sabine, "Sputtering Power Effects on Growth and Mechanical Properties of Cr2AlC MAX Phase Coatings" (2016). Mechanical Engineering Faculty Publications. 212.
https://digitalcommons.usf.edu/egr_facpub/212
