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Influence of CVD Al2O3 coated tool surface micro topography on the tribological characteristics in metal cutting: part I
Högskolan Dalarna, Akademin Industri och samhälle, Materialteknik. (Tribologi)
Lunds Universitet. (Produktionsteknik)
Högskolan Dalarna, Akademin Industri och samhälle, Materialteknik. (Tribologi)
Seco Tools.
Vise andre og tillknytning
2013 (engelsk)Inngår i: Wear, ISSN 0043-1648, E-ISSN 1873-2577, s. 87-98Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The influence of surface micro topography of CVD α-Al2O3 coatings, deposited on cemented carbide inserts, on tribological characteristics in sliding contact and in metal cutting has been investigated using quenched and tempered steel as counter/work material. Pin-on-disc and turning tests were carried out and post-test characterization using 3D optical surface profilometry and scanning electron microscopy was performed in order to investigate the tribological response of the coatings. The results show that surface micro topography can have a significant impact on the tribological performance of Al2O3 coatings under initial and cutting contact conditions. For both kinds of tests the tendency for transfer of workpiece material strongly increases with increasing coating micro topography. In the pin-on-disc tests, a smooth coating surface significantly reduces the friction coefficient. In the turning tests the contact conditions at the flank face increase with decreasing micro topography. In contrast, no general conclusions can be drawn regarding the influence of coating micro topography on the contact conditions at the rake face. The resulting topography of the turned surface was found to increase with increasing coating topography.

sted, utgiver, år, opplag, sider
Elsevier, 2013. s. 87-98
Emneord [en]
CVD; α-Al2O3; Topography; Friction; Sliding contact; Metal cutting
HSV kategori
Forskningsprogram
Stålformning och ytteknik
Identifikatorer
URN: urn:nbn:se:du-11440DOI: 10.1016/j.wear.2012.11.002ISI: 000316427200011OAI: oai:DiVA.org:du-11440DiVA, id: diva2:576510
Tilgjengelig fra: 2012-12-13 Laget: 2012-12-13 Sist oppdatert: 2017-12-07bibliografisk kontrollert

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