ISSN:
1662-8985
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
CNx/TiNx composite films were prepared on high-speed steel (HSS) substrate by pulsedlaser co-deposition process with the Ti/graphite combined targets and at a substrate temperature of200 ºC. The composition, morphology and microstructure of the films were characterized by energydispersive X-ray spectrum (EDS), scanning electron microscopy (SEM), X-ray diffraction (XRD)and high-resolution transmission electron microscopy (HRTEM). In the graphite/Ti range of 0.5–2.0of the target, the composite films composed of TiNx, a-CNx and a small amount of metallic Ti. TheTiNx disappeared in the films at a high graphite/Ti ratio of the target. The adhesion and tribologicalperformance of the films were investigated using a conventional scratch tester and a ball-on-disktribometer respectively. With increasing the graphite/Ti ratio of the target, the adhesion to substrateof the composite films deteriorated from 46 N to 26 N, and the friction coefficient drcreased from0.23 to 0.17. The composite film deposited at the graphite/Ti ratio of 1.0 showed a low frictioncoefficient, good adhesion and wear rate of 3.2×10–7 mm3/Nm in humid air
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/40/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.47-50.540.pdf
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