Characteristic of highperformance on mild steel/ALN cermet selective surfaces deposited by RF magnetron sputtering

Abstract

In this research work aluminum nitride (AlN) films were deposited usig only RF reactive sputtering atmossphere of nitrogen and argon on mild steel (AISI 1018). Coatings were deposited on substrates at RT, 200°C, 400°C, 500°C and at 600°C.The substrate temperatute notably affected the thichness, crystalline grain size, and hardness of the coatings. Use XRD, AFM, SEM, EDX, nanoindentation, salt spray or moisture to check the chemical composition, thickness, roughness, film structure, mechanical and corrosion properties of the film. All samples confirmed excessive hardness values exceeded in some cases, 23 Gpa and Elastic modulus 222 Gpa for 500°C. AlN with a lattice (a=2.80710 Å) parameter and only developed under conditions of high surface mobility.