Abrasive wear behavior of Ti-Al-N hard-faced coatings evaluated with ball-cratering test method

In this present work dry sliding metal-metal wear behavior of stainless steel AISI 410 and Ti-Al-N coated specimens at room temperature was investigated by using a
ball cratering wear testing machine over a load range of 2N-5N for a total sliding distance
of 350 m at a constant sliding speed of 0.3927 ms-1. The results show that the wear of test
specimens increases with increasing load and sliding distance. Also the total abrasive
wear decreases with the improved hardness of the coated specimen. The wear rates and
worn surfaces were investigated with scanning electron microscopy (SEM) (with EDAX
attachment) and Talysurf profilometry. The more grooving region, pits, ploughing ridge
and cavities with Ti-Al-N composite particles were found on the worn surface of the
stainless steel AISI 410. This result shows off hard Ti-Al-N coated particles exposed on
the worn surface.