| Pacific Rim Symposium on Surfaces, Coatings and Interfaces (PacSurf 2016) | |
| Thin Films | Wednesday Sessions |
| Session TF-WeP |
| Session: | Thin Films Posters Session II |
| Presenter: | Wang-Ryeol Kim, Korea Institute of Industrial Technology, Korea |
| Authors: | W.-R. Kim, Korea Institute of Industrial Technology, Korea T.H. Nam, University of Ulsan, Republic of Korea I.-O. Baek, Korea Institute of Industrial Technology, Korea E.Y. Choi, Korea Institute of Industrial Technology, Korea J.B. Jeon, Korea Institute of Industrial Technology, Korea |
| Correspondent: | Click to Email |
Superhardness Ti –Al –Si –N nanocomposite coatings were deposited on SKD 61 and inconel substrates by hybrid coating system (AIP+Sputtering) in various Si target powers for maching of aircraft mechanical parts. The relationship among microstructures, mechanical properties, and tribologiacal properties was investigated. The synthesized Ti –Al –Si –N coatings were characterized using x –ray diffraction (XRD) and x –ray photoelectron spectroscopy (XPS). These analyses revealed that the Ti –B –N –Si coatings are nanocomposites consisting of solid-solution (Ti,Al)N crystallites distributed in an amorphous SiNx matrix. The addition of Si into the Ti –Al –N coating led to percolation of amorphous SiNx and BN phases. The Ti –Al –Si –N coatings exhibited high hardness and H/E values, indicating high fracture toughness, of approximately 42 GPa and 0.097, respectively. Furthermore, the minimum friction coefficient of the Ti –Al –Si –N coatings was approximately 0.25 at low Si target powers. A systematic investigation on the microstructures, mechanical properties, and tribological properties of Ti –Al –Si –N coatings prepared from three Ti-Al composite targets and pure Si target is reported in this study.