Abstract
The phase composition, microhardness and tribological properties of multilayered intermetallic Ti-Al coatings produced on high speed steel substrates by vacuum arc plasma were studied. The layers thickness were regulated in the range 5nm–172nm by varying the rotational speed of desktop and spatial location of samples in vacuum chamber. Dependence of phase compositions of intermetallic Ti-Al coatings from quantity layers and spatial location were identified with X-ray diffraction (XRD). The hardness of the coatings was measured using a Vickers microhardness tester. The dependence of the microhardness on the percentage of intermetallic Ti-Al system are investigated. Tribological propeties of intermetallic Ti-Al coatings were determined on an automated installation Nanovea. Also, dependence the wear resistance of intermetallic Ti-Al coatings of quantity layers and spatial location were studied.
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