Surface modification of sialon ceramics and cemented carbides by PVD coating deposition

• Autorzy: Dobrzański, L. A. , Staszuk, M.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The paper includes investigation results of structures and mechanical properties of coatings deposited by the physical vapor deposition (PVD) techniques onto both sialon tool ceramics and sintered carbides. The paper includes two kinds of coating materials, isomorphic containg phases with TiN and AlN. Design/methodology/approach: In the paper were presented some observations of coating structures, before carried out in the scanning electron microscope. Phases composition analysis was carried out with using a XRD and GIXRD method. The roughness of surface measurements, microhardness tests and adhesion coatings to substrates tests were carried out It was found that some coatings showed a fine-grained structure. Cutting ability were defined on basis of technological cutting trials. Findings: Coatings, which had contained a AlN phase about hexagonal lattice showed a considerably higher adhesion to substrate from sialon ceramics rather than a coating contained a TiN phase about cubic lattice. As a result of setting coatings onto substrates, it was found a significant increase of both coatings hardness and surface roughness. The coatings contains a TiN phase shows a low adherence to substrate ceramic, what is the consequence of low cutting ability. Whereas, a coatings contains a AlN phase about hexagonal lattice show very good adherence to ceramic substrate as well as very good cutting ability. Research limitations/implications: The good adhesion (Al,Ti)N coating to sialon substrate is connecting with the same type of bonding in coat and sialon substrate. Originality/value: The good properties of the PVD gradient coatings make them suitable for various engineering and industrial applications.

Słowa kluczowe

EN

tool materials; surface treatment; thin and thick coatings; wear resistance

• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2011
• Tom: Vol. 49, nr 2
• Strony: 158--165
• Opis fizyczny: Bibliogr. 20 poz., rys., tab.

Twórcy

autor

Dobrzański, L. A.

• Division of Materials Processing Technology, Management and Computer Techniques in Materials Science, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland

autor

Staszuk, M.

• Division of Materials Processing Technology, Management and Computer Techniques in Materials Science, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland,

Bibliografia

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