Abstract:
This study was performed with the aim to investigate the high-temperature wear
behavior of thin-film TiN and TiAIN coatings on carbide substrate. The results will be
beneficial to the cutting industry for aiding in the selection of the proper thin film for
cutting tool. The films studied were single layer coated. The wear test was performed on
pin on disc apparatus at the test temperatures of 25 C, 300 C, 500 C, and 700 C. The
loads used were 1 N and 5 N with a sliding distance of 200 m at a linear speed of 0.2
m/s. The results showed that the wear volume of TiAIN coating at 700 C was similar to
that tested at 25 C, while the wear volumes at 300 C and 500 c were found to be
lower than those at 25 C and 700 C. The wear volumes of TiN coatings were always
higher those of the TiAIN coatings under all testing conditions. The wear behavior was
dependent on the oxidation behavior, the wear pattern and the working temperature.