Multilayer and gradient PVD coatings on the sintered tool materials

• Autorzy: Dobrzański L. , Gołombek K. , Mikuła J. , Pakuła D.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The paper presents investigation results of structure and properties of the multilayer and gradient TiN+(Ti,Al,Si)N+TiN nanocrystalline coatings deposited with the PVD method (CAE -Cathodic Arc Evaporation process) and in the combination of Al2O3 and TiN coatings in the CVD process on the substrate of cemented carbides,cermets, Al2O3+ZrO2, Al2O3+TiC, Al2O3+SiC(w) oxide ceramics and Si3N4 nitride ceramics. Design/methodology/approach: The structural investigation includes the metallographic analysis on thetransmission and scanning electron microscope, confocal microscope. Examinations of the chemicalcompositions of the deposited coatings were carried out using the X-ray energy dispersive spectrograph EDS, glow-discharge optical emission spectroscope GDOS, and using the X-ray diffractometer. The investigation includes also analysis of the mechanical and functional properties of the material: substrate hardness tests and microhardness tests of the deposited coatings, surface roughness tests, evaluation of the adhesion of the deposited coatings, cutting properties of the investigated materials. Findings: Deposition of the multicomponent gradient coatings with the PVD method, based on the Al and Si solid secondary solution in the TiN titanium nitride, isomorphous with the alternating pure titanium nitride TiN, on tools made from oxide, nitride ceramics and tool cermets, results in the increase of mechanical properties in comparison with uncoated tool materials, deciding thus the improvement of their working properties. Practical implications: Deposition of (Ti,Al,Si)N nanocrystalline coatings by the use of PVD method causes the increase of cutting properties of tools made of cermets for ca. 300% and of Al2O3+ZrO2 for ca. 100% comparing to adequately uncoated tools. Originality/value: Comparison of the wide range of modern sintered tool materials with wide unique set of PVD coatings.

Słowa kluczowe

EN

cutting tools; cemented carbides; cermets; oxide and nitride ceramics; surface layer; PVD

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2008
• Tom: Vol. 31, nr 2
• Strony: 170--190
• Opis fizyczny: Bibliogr. 50 poz., wykr.

Twórcy

autor

Dobrzański L.

autor

Gołombek K.

autor

Mikuła J.

autor

Pakuła D.

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

Bibliografia

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