Akademik Veri Yönetim Sistemi
5th International Conference on Advances in Manufacturing and Materials Engineering, ICAMME 2022, Kuala-Lumpur, Malezya, 9 - 10 Ağustos 2022, ss.221-227
Improvements can be made to the surface properties of machine elements such as gears, bearings and shafts operating under different aggressive conditions such as high temperature, pressure, rotational speed. As surface wear properties, it is aimed to increase the performance and life of the machine elements by making the mechanical and tribological properties functional. In this study, CFUBMS-HiPIMS was used as an advanced PVD technology for the development of thin film coatings suitable for machine elements made of tool steel. LaB6 doped TiBCN-based coatings were synthesized on 4140 base materials using a hybrid of pulsed dc and HiPIMS power supplies. Thus, coatings with dense microstructure and high adhesion were obtained. In coatings synthesized by Taguchi experimental design, Ti, Cr, TiB2, LaB6 targets and Ar, N2, C2H2 gases were used by adding LaB6 + TiB2 on the Cr:CrN coating as a transition layer in TiBCN-based coatings. Optical Microscope, XRD, SEM were used to determine the characteristic microstructural properties of the coatings. Micro Hardness and Scratch testers were used to determine the mechanical properties, while tribological properties were determined with a pin-on-disc tribotest device under atmospheric conditions at room temperature. An increase in adhesion values (50N-88N-92N) and a decrease in microhardness values (12GPa-10GPa-9GPa) were observed with the increase of current applied (2A-2.5A-3A) to the LaB6 target in TiBCN-based coatings.