Study on crystalline to amorphous structure transition of Cr coatings by magnetron sputtering

► Crystalline to amorphous structure transition of Cr coatings was studied in this paper. ► We focused on the influence of deposition rate on microstructures of Cr coatings. ► We find that Cr coating exhibits dense columnar crystalline structure at 400 W. ► Cr coating exhibits amorphous microstructure with a few nano-crystal grains mixed at 60 W.