Surface layers on the Mg-Al-Zn alloys coated using the CVD and PVD methods

• Autorzy: Tański T.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The aim of this paper was investigated structure and properties of gradient coatings produced in PVD and CVD processes on MCMgAl9Zn1 magnesium alloys. Design/methodology/approach: The following results concern the structures of the substrates and coatings with the application of electron scanning microscopy ZEISS SUPRA 35; phase composition of the coatings using X-ray diffraction and grazing incident X-ray diffraction technique (GIXRD); microhardness and wear resistance. Findings: The deposited coatings are characterized by a single, double, or multi-layer structure according to the applied layers system, and the individual layers are coated even and tightly adhere to the substrate as well to each other. The analysis of coatings obtained on the surface of cast magnesium alloys by the PVD and CVD processes show a clear - over 100% - increase of the microhardness, compared to the base material microhardness. The best results of the sliding distance were obtained for the DLC coatings. Practical implications: Achieving of new operational and functional characteristics and properties of commonly used materials, including the Mg-Al-Zn alloys is often obtained by heat treatment, ie, precipitation hardening and / or surface treatment due to application or manufacturing of machined surface layer coatings of materials in a given group of materials used for different surface engineering processes. Originality/value: The paper presents the research involving the PVD and CVD coatings obtained on an unconventional substrate such as magnesium alloys. Contemporary materials should possess high mechanical properties, physical and chemical, as well as technological ones, to ensure long and reliable use. The above mentioned requirements and expectations regarding the contemporary materials are met by the non-ferrous metals alloys used nowadays, including the magnesium alloys.

Słowa kluczowe

EN

thin-thick coatings; PVD and CVD coatings; structure; properties

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2012
• Tom: Vol. 53, nr 2
• Strony: 89--96
• Opis fizyczny: Bibliogr. 21 poz., rys., tab.

Twórcy

autor

Tański T.

• 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

• [1] H. Friedrich, S. Schumann, Research for a „new age of magnesium” in the automotive industry, Journal of Materials Processing Technology 117 (2001) 276-281.
• [2] E.F. Horst, B.L. Mordike, Magnesium Technology, Metallurgy, Design Data, Application, Springer-Verlag, Berlin Heidelberg, 2006.
• [3] K.U. Kainem, Magnesium - Alloys and Technology, Willey-VH, Weinheim, 2003.
• [4] http://minerals.usgs.gov/minerals/pubs/commodity/magnesi um/mcs-2012-mgmet.pdf.
• [5] T. Tański, L.A. Dobrzański, K. Labisz, Investigations of microstructure and dislocations of cast magnesium alloys, Journal of Achievements in Materials and Manufacturing Engineering 42 (2010) 94-101.
• [6] L.A. Dobrzański, T. Tański, Influence of aluminium content on behaviour of magnesium cast alloys in bentonite sand mould, Solid State Phenomena 147-149 (2009) 764-769.
• [7] T. Tański, Structure modeling and properties of the surface of the Mg-Al-Zn alloys, Open Access Library, 2 (8) (2012) 1-158 (in Polish).
• [8] L.A. Dobrzański, J. Domagała, T. Tański, A. Klimpel, D. Janicki, Laser surface treatment of magnesium alloy with WC and TiC powders using HPDL, Journal of Achievements in Materials and Manufacturing Engineering 28/2 (2008) 179-186.
• [9] M. Rzychoń, A. Kiełbus, Microstructure of WE43 casting magnesium alloys, Journal of Achievements in Materials and Manufacturing Engineering 21/1 (2007) 31-34.
• [10] D. Pakuła, L.A. Dobrzański, A. Križ, M. Staszuk, Investigation of PVD coatings deposited on the Si3N4 and sialon tool ceramics, Archives of Materials Science and Engineering 46/1 (2010) 53-60.
• [11] L.A. Dobrzański, M. Staszuk, K. Gołombek, A. Śliwa, M. Pancielejko, Structure and properties PVD and CVD coatings deposited onto edges of sintered cutting tools, Archives of Metallurgy and Materials 55/1 (2010) 187-193.
• [12] T. Tański, K. Lukaszkowicz, Structure and mechanical properties of hybrid-layers coated applying the PVD method onto magnesium and aluminium alloys substrate, Materials Engineering 4/182 (2011) 772-775.
• [13] T. Tański, K. Labisz, Electron microscope investigation of PVD coated aluminium alloy surface layer, Solid State Phenomena 186 (2012) 192-197.
• [14] T. Tański, Investigation of the structure and properties of PVD and PACVD-coated magnesium die cast alloys, Magnesium Alloys, W.A. Monteiro ed., InTech, 2012 (in print).
• [15] N.H. Shah, R. Jayaganthan, D. Kaur, Effect of sputtering pressure and temperature on DC magnetron sputtered CrN films, Surface Engineering 26/8 (2010) 629-637.
• [16] B. Warcholinski, A. Gilewicz, Mechanical properties of multilayer TiAlN/CrN coatings deposited by cathodic arc evaporation, Surface Engineering 27/7 (2011) 491-497.
• [17] H. Zhao, X.H. Wang, Q.L. Liu, L.J. Chen, Z. Liu, Structure and wear resistance of TiN and TiAlN coatings on AZ91 alloy deposited by multi-arc ion plating, Transactions of Nonferrous Metals Society of China 20 (2010) 679-682.
• [18] H. Altun, S. Sen, The effect of PVD coatings on the wear behaviour of magnesium alloys, Materials Characterization 58 (2007) 917-921.
• [19] J. Liang, P. Wang, L.T. Hu, J.C. Hao, Tribological properties of duplex MAO/DLC coatings on magnesium alloy using combined microarc oxidation and filtered cathodic arc deposition, Materials Science and Engineering A 454-455 (2007) 164-169.
• [20] Y.S. Zou, Y.F. Wu, H. Yang, K. Cang, G.H. Song, Z.X. Li, K. Zhou, The microstructure, mechanical and friction properties of protective diamond like carbon films on magnesium alloy, Applied Surface Science 258 (2011) 1624-1629.
• [21] A. Matuszewska, R. Michalczewski, M. Grądkowski, M. Szczerek, Selection of oil bases used for friction pairs of elements coated with WC/ C coatings, Machine Exploitation 2/150 (2007) 31-40.