“…In addition, TiN coatings have found extensive industrial applications, such as coatings on mandrels, drawing dies, cutting tools, molds, gears, and bearings [15,16], as they offer high hardness, wear, and corrosion resistance [17,18]; also, good thermal and electrical conductivities should be noted [19]. The TiN coating has been deposited on steels by various methods such as chemical vapor deposition (CVD) [7], combination of plasma nitriding and plasmaenhanced CVD [13], physical vapor deposition (PVD) [16], plasma-assisted chemical vapor deposition (PACVD) [20], and the duplex treatment method of the tufftriding followed by the pack titanium coating [14]. Wear-resistant TiN coatings have been investigated in different applied loads (up to 20 N [21-23] and 75 N [24]).…”