Effects of wear speeds on friction-wear behaviours of cathode arc ion plated TiAlSiN coatings at high temperatures.

Autor: Chengjian, Tang, Dejun, Kong
Předmět:
Zdroj: Tribology: Materials, Surfaces & Interfaces; Jun2017, Vol. 11 Issue 2, p66-74, 9p
Abstrakt: A TiAlSiN coating was deposited on AISI H13 hot work mould steel using a cathodic arc ion plating (CAIP). The microstructures, chemical composition and phases of the obtained coatings were analysed using a field emission scanning electronic microscope, energy dispersive spectrometer (EDS) and X-ray diffractometer, respectively. The high temperature friction-wear properties of TiAlSiN coating at the different wear speeds were investigated, and the wear mechanism was also discussed. The results show that the N of the TiAlSiN coating is not completely released at 800 °C, the diffraction peak of TiN still exists in this coating. In addition, the products of SiO2 and Al2O3 play a role of self-lubricating and wear resistance. The average coefficient of friction (COF) of the coatings at the wear speeds of 400, 600, and 800 r/min is 0.15, 0.22, and 0.17, respectively. The wear mechanism of TiAlSiN coating at 800 °C is primarily adhesive wear, accompanied by oxidation wear and abrasive wear. [ABSTRACT FROM AUTHOR]
Databáze: Supplemental Index