Gradient coatings deposited by Cathodic Arc Evaporation: characteristic of structure and properties

• Autorzy: Dobrzański, L. A. , Gołombek, K.
• Języki publikacji: EN

Abstrakty

EN

Purpose: It has been demonstrated in the paper that deposition of the multilayer and gradient coatings with the PVD method in the Cathodic Arc Evaporation CAE process on tools made from cermets. Design/methodology/approach: Structural examinations are presented of the applied coatings and their substrate made on the TEM, SEM and on the light microscope. Evaluation of the adhesion of the deposited coatings onto the cermets was made using the scratch test. Cutting properties of the investigated materials were determined basing on the technological continuous cutting tests of the C45E steel. Microhardness tests of the deposited coatings were made on the ultra-micro-hardness tester. Surface roughness tests were also made before depositing the coatings and after completing the PVD process. Findings: It has been demonstrated in this work that deposition of the TiN+(Ti,Al,Si)N+TiN multilayer or gradient coatings with the PVD (Cathodic Arc Evaporation) process on tools made from cemented carbides, results in the increase of coatings’ hardness and improvement of their adhesion to the substrate, in comparison with the multiple-layer coatings deposited using the PVD method on the same substrate materials, deciding improvement of the working properties of cutting tools coated with the TiN+gradient or multi(Ti,Al,Si)N+TiN system coatings, compared with coatings developed on the same sintered tool materials, but uncoated or coated with simple coatings. Practical implications: Gradient coatings deposited with the CAE method onto the cermet substrate qualify for the widespread industrial use on cutting tools and offering the possibility to use them in the pro-ecological dry cutting processes without the use of the cutting fluids and in the „Near-Net-Shape” technology. Originality/value: In the paper the research of newly worked out multilayer and gradient TiN+(Ti,Al,Si)N+TiN nanocrystalline coatings deposited in the PVD method on cermets carried out in order to improve the tool cutting properties. To explain reasons of significant improvement of tool exploitation properties modern material science methods of research especially of the one of thin foils including those on cross-sections on a high-voltage transmission electron microscopy have been used. As a result of very complicated and difficult preparation methods, similar research are made only by few, the most advanced in the world, laboratories of electron microscopy, but concerning other coatings on other substrates than those analysed in the given paper. Undoubtedly, using such modern research methods is a modern approach to the solution and explanation of the scientific problem presented in that paper.

Słowa kluczowe

PL

powłoki gradientowe; powłoki wielowarstwowe; cermet; cermetal; spiek ceramiczno-metalowy; PVD; TEM

EN

gradient coatings; multilayer coatings; cermet; PVD; TEM

• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2006
• Tom: Vol. 14, nr 1-2
• Strony: 48--53
• Opis fizyczny: Bibliogr. 12 poz., rys., tab., wykr.

Twórcy

autor

Dobrzański, L. A.

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

autor

Gołombek, K.

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

Bibliografia

• [1] L.A. Dobrzański, K. Gołombek, Structure and properties of the cutting tools made from cemented carbides and cermets with the TiN+mono, gradient or multi (Ti,Al,Si)N+TiN nanocrystalline coatings, Journal of Materials Processing Technology 164-165 (2005) 805-815.
• [2] K. Gołombek, L.A. Dobrzański, M. Soković: Properties of the wear resistant coatings deposited on the cemented carbides substrates in the cathodic arc evaporation process, Journal of Materials Processing Technology 157-158 (2004) 341-347.
• [3] H.A. Jehn, Multicomponent and multiphase hard coatings for tribological applications, Surface and Coatings Technology, 131 (2000) 433-440.
• [4] P. Holubar, M. Jilek, M. Sima, Present and possible future applications of superhard nanocomposite coatings, Surface and Coating Technology 133-134 (2000) 145-151.
• [5] P. Holubar, M. Jilek, M. Sima, Nanocomposite nc-TiAlSiN and nc-TiN–BN coatings: their applications on substrates made of cemented carbide and results of cutting tests, Surface and Coating Technology 120–121 (1999) 184-188.
• [6] I.Yu. Konyashin, Wear-resistantcoatings for cermet cuttingtools, Surface and Coatings Technology 71 (1995) 284-291.
• [7] W. König, R. Fritsch, Physically vapor deposited coatings of cermets: Performance and wear phenomena in interrupted cutting, Surface and Coating Technology 68-69 (1994) 747-754.
• [8] H. Randhawa, P.C. Johnson, R. Cunningham, Deposition and. characterization of ternary nitrides, J. Vac. Sci. Technol. A 6 (3 ) (1988 ) 2136.
• [9] M. Soković: Structure and properties of the TiN and TiZrN PVD-coated tool cermets, PhD thesis, unpublished, Main Library of the Silesian University of Technology, Gliwice, 1997.
• [10] M. Soković, L. Kosec, L.A. Dobrzański, Diffusion across PVD coated cermet tool/workpiece interface, Journal of Materials Processing Technology 157–158 (2004) 427-433.
• [11] H.K. Tönshoff, C. Blawit, Development and evaluation of PACVD coated cermet tools, Surface and Coating Technology 93 (1997) 119-127.
• [12] Won TaeKwon, JuneSeuk Park, Seong-Won Kim, Shinhoo Kang, Effect of WC and group IV carbides on the cutting performance of Ti(C,N) cermet tools, International Journal of Machine Tools &Manufacture 44 (2004) 341-346.