Title: Investigation of the structure and properties of coatings deposited on ceramic tool materials

Authors: L.A. Dobrzanski, D. Pakula, J. Mikula, K. Golombek

Addresses: Division of Materials Processing Technology and Computer Techniques in Materials Science, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, Konarskiego 18A Str., 44-100 Gliwice, Poland. ' Division of Materials Processing Technology and Computer Techniques in Materials Science, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, Konarskiego 18A Str., 44-100 Gliwice, Poland. ' Division of Materials Processing Technology and Computer Techniques in Materials Science, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, Konarskiego 18A Str., 44-100 Gliwice, Poland. ' Division of Materials Processing Technology and Computer Techniques in Materials Science, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, Konarskiego 18A Str., 44-100 Gliwice, Poland

Abstract: This paper presents the results of the investigation of the structure and properties of the coatings deposited with the PVD and CVD techniques on sintered tool materials: cermets, oxide Al₂O₃ ceramic and nitride Si₃N₄ based ceramics. The investigation includes the metallographic analysis using the transmission and Scanning Electron Microscope (SEM), chemical composition analysis, as well as the analysis of the mechanical and functional properties of the material. Tests were carried out on the multipoint inserts made from the ceramic tool materials based on Al₂O₃ and Si₃N₄ and cermets, both uncoated and coated with gradient, multicomponent and multilayer hard wear resistant coatings with PVD and CVD processes.

Keywords: ceramic tool materials; PVD; CVD; SEM; TEM; tool coatings; sintered tool materials; structure; mechanical properties; functional properties; metallographic analysis; chemical composition; multipoint inserts; cermets.

DOI: 10.1504/IJSURFSE.2007.013624

International Journal of Surface Science and Engineering, 2007 Vol.1 No.1, pp.111 - 124

Published online: 09 May 2007 *

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