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The objective of this study was to deposit directly chromium with diamond nanoparticles (ND) on aluminum alloys and investigate the coating surface. The chromium coatings on aluminum alloys were obtained by electrochemical deposition. The coatings were doped with ND. The diamond nanoparticles were obtained by detonation synthesis. Chromium coatings were deposited on aluminum alloys with a silicon content of 7 % and 10 %. The ND concentration in the electrolyte was 25 g/l. The surface analysis was performed by means of Atomic force microscopy. The surface of the coating of chromium with ND on Al10Si is twice more even than that on Al7Si. The microstructure and microhardness were examined with a metallographic microscope and a microhardness tester. The microhardness of the coated samples is 9163 MPa compared to 893 MPa of uncoated aluminum samples. The thickness of the chromium coatings doped with diamond nanoparticles is between 45 – 55 μm. The coatings are dense, continuous and uniform with good adhesion to the substrate material.
Czasopismo
Rocznik
Tom
Strony
115--120
Opis fizyczny
Bibliogr. 8 poz., rys., tab., wykr.
Twórcy
autor
- Institute of Metal Science, Equipment and Technologies with Hydro Aero Dynamics Center "Acad. Angel Balevski" at Bulgarian Academy of Sciences, Bulgaria
autor
- Institute of Metal Science, Equipment and Technologies with Hydro Aero Dynamics Center "Acad. Angel Balevski" at Bulgarian Academy of Sciences, Bulgaria
autor
- Sofia University "St. Climent Ohridski", Faculty of Chemistry and Pharmacy, Department of Physical Chemistry, Bulgaria
autor
- Faculty of Industrial Engineering, Tribology Center, Technical University – Sofia, Bulgaria
Bibliografia
- [1] U.S.Chrome Inc. (2020, January). Hard Chrome Plating Aluminum & Electroplating Aluminum, Retrieved April 14, 2020, from http://www.uschrome.com/chromium-on-aluminum.
- [2] Gidikova, N., Valov, R., Petkov, V., Sulowski, M., Witkowska M. & Cempura, G. (2017). Nanocomposite Coatings of Chromium on Aluminum Alloys. Transactions of the foundry research institute. 57(4), 241-244. DOI: 10.7356/iod.2017.21.
- [3] Arlington Plating Company. Plating on Aluminum, Retrieved October 15, 2020, from https://arlingtonplating.com/ substrates-specifications/plating-on-aluminum/.
- [4] Finishing – Education. Hard Plating on Aluminum. Retrieved October 15, 2020, from https://www.finishing.com/74/41.shtml.
- [5] Shluger, M.A. (1987). Processes of electrochemical deposition of metals and alloys. Chromating. In A.M. Ginberg, A.F. Ivanov & L.L. Kravchenko Galvanotechnika. (pp. 210-220). Moscow: Metalurgia.
- [6] Jalili, Н. & Laxminarayana, K. A. (2004). Review of atomic force microscopy imaging systems: application to molecular metrology and biological sciences. Mechatronics. 14(8), 907-945. DOI: 10.1016/j.mechatronics.2004.04.005.
- [7] Eaton, P., West, P. (2010). Atomic Force Microscopy. Oxford: OXFORD University Press.
- [8] Kandeva, M., Vencl, A., Karastoyanov, D. (2016). Advanced Tribological Coatings for Heavy-Duty Applications. Case Studies. Sofia: Academy Publishing House.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-361e923e-7a3d-4745-b00c-569c90c028f9