Characteristics and Properties of Chromium Coatings with Diamond Nanoparticles Deposited Directly on Aluminum Alloys

• Autorzy: Petkov V. , Valov R. , Simeonova S. , Kandeva M.

Identyfikatory

DOI

10.24425/afe.2020.133357

• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

chromium coating; aluminum alloy; diamond nanoparticles; atomic force microscopy; wear resistance

PL

powłoka chromowa; stop aluminium; nanocząsteczki diamentu; mikroskopia sił atomowych; odporność na zużycie

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2020
• Tom: Vol. 20, iss. 4
• Strony: 115--120
• Opis fizyczny: Bibliogr. 8 poz., rys., tab., wykr.

Twórcy

autor

Petkov V.

• Institute of Metal Science, Equipment and Technologies with Hydro Aero Dynamics Center "Acad. Angel Balevski" at Bulgarian Academy of Sciences, Bulgaria

autor

Valov R.

• Institute of Metal Science, Equipment and Technologies with Hydro Aero Dynamics Center "Acad. Angel Balevski" at Bulgarian Academy of Sciences, Bulgaria

autor

Simeonova S.

• Sofia University "St. Climent Ohridski", Faculty of Chemistry and Pharmacy, Department of Physical Chemistry, Bulgaria

autor

Kandeva M.

• 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.