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Cutting Properties of PVD and CVD Coated A2lO 3 + TiC Tool Ceramic

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Abstract:

The paper presents investigation results of tribological and cutting properties of the coatings deposited with the PVD and CVD techniques on cutting inserts made from the Al2O3 + TiC tool ceramics. Tests were carried out on the inserts made from ceramics, uncoated and PVD or CVD-coated with gradient, mono-, multilayer and multicomponent hard wear resistant coatings composed of TiN, TiCN, TiAlN, TiAlSiN and Al2O3 layers. Substrate hardness tests and micro hardness tests of the deposited coatings were made on the ultra-micro-hardness tester. It was demonstrated, basing on the technological cutting tests of grey cast iron (260 HB), that putting down onto the tool ceramics the thin anti-wear PVD and CVD coatings increases their abrasion wear resistance, which has a direct effect on extending tool life of the cutting edge.

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Periodical:

Materials Science Forum (Volumes 539-543)

Pages:

1159-1164

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.539-543.1159

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Online since:

March 2007

Authors:

Mirko Sokovic, Leszek Adam Dobrzański, Janez Kopač, Ladislav Kosec

Keywords:

Chemical Vapor Deposition (CVD), Multilayer Coating, Oxide Tool Ceramic, PVD, Wear

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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