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Vojnotehnički glasnik
2018, vol. 66, iss. 1, pp. 28-40
article language: English
document type: Original Scientific Paper
published on: 08/01/2018
doi: 10.5937/vojtehg66-14009
Creative Commons License 4.0
Mechanical properties and microstructures of bio-inert layers of chrome oxide coatings deposited by the APS process
IMTEL Institute, Belgrade



Micromechanical criteria of damage and fracture (MESTD - 174004)


Plasma spray Cr2O3 ceramic layers are used as a separate coating or as a supplement to bio-reactive organic composite ceramics Ca10(PO4)6(OH)2-Al2O3-ZrO2-Cr2O3 and other bio-inert ceramics in composites of the types Al2O3-ZrO2-SrO-Cr2O3-Y2O3, ZrO2-TiO2-Cr2O3 and TiO2-Cr2O3 to increase the mechanical properties and resistance components of artificial joints on sliding abrasion and corrosion. This paper analyzes the influence of the plasma gun distance from the substrate on the mechanical properties and the microstructure of Cr2O3 layers deposited with the current of 40kW. The aim was to deposit layers with optimal characteristics that will enable the effective implementation of Cr2O3 layers on substrates of steel implants exposed to dry friction without lubrication and to corrosion of living tissues. The mechanical properties were tested by examining microhardness layers using the HV0.3 method and the strength was tested by tensile testing. The surface of powder particles was examined by SEM. The microstructures of layers were analyzed with the use of an optical microscope (OM) and a scanning electron microscope (SEM). The test results confirmed a possibility of effective application of bio-inert layers of Cr2O3 with other ceramics intended for the production of functional implants.



*** (1992) ASM Handbook, Alloy Phase Diagrams. Metals Park: ASM International, Volume 3
*** (2008) Standard test method for adhesion or cohesion strength of thermal spray coatings. Reapproved, ASTM C633-1
*** (2012) Material product data sheet: Metco 106NS chromium oxide thermal spray powders. Sulzer Metco, DSMTS-0072.1
Bag, S., Biswas, B.K. (2016) Review on bioactive ceramic coating. International Journal of Pharma and Bio Sciences, 7(2), pp. 117-128
Cetinel, H., Celik, E., Kusoglu, M.I. (2008) Tribological behavior of Cr2O3 coatings as bearing materials. Journal of Materials processing technology, 196(1-3), pp.259-265
Khanna, A., Bhat, D.G. (2006) Growth and characterization of chromium oxide thin films prepared by reactive ac magnetron sputtering. Journal of Vacuum Science and Technology A: Vacuum, Surfaces, and Films, 24, 1870. Available at:
Morks, M.F., Akimoto, K. (2008) The role of nozzle diameter on the microstructure and abrasionwear resistance of plasma sprayed Al2O3/TiO2 composite coatings. Journal of Manufacturing Processes, 10(1), pp.1-5
Mrdak, M.R. (2017) Mechanical properties and the microstructure of the plasma-sprayed ZrO2Y2O3 / ZrO2Y2O3CoNiCrAIY/ CoNiCrAIY coating. Vojnotehnički glasnik, vol. 65, br. 1, str. 30-44
Mrdak, M.R. (2017) Structure and properties of Ni22Cr10Al1Y coatings deposited by the vacuum plasma spray process. Vojnotehnički glasnik, vol. 65, br. 2, str. 378-391
Ogwu, A.A., Oje, A.M., Kavanagh, J. (2016) Corrosion, ion release and Mott-Schottky probe of chromium oxide coatings in saline solution with potential for orthopaedic implant applications. Materials Research Express, 3(4). Available at:
Pang, X., Gao, K., Volinsky, A.A. (2007) Microstructure and mechanical properties of chromium oxide coatings. Journal Materials Research Society, 22(12), pp. 3531-3537;
Schutz, H., Gosmann, T., Stover, D., Buchkremer, H., Jager, D. (1991) Manufacture and properties of plasma sprayed Cr2O3. Materials and Manufacturing Processes, 6(4), pp.649-669
Szafarska, M., Iwaszko, J. (2012) Laser remelting teratment of plasma-sprayed Cr2O3 oxide coatings. Archives of metallurgy and materials, 57(1), pp. 215-221;
Trifa, F.I., Montavon, G., Coddet, C. (2005) On the relationships between the geometric processing parameters of APS and the Al2O3-TiO2 deposit shapes. Surface and Coatings Technology, 195(1), p.54-69
Wang, M., Shaw, L.L. (2007) Effects of powder manufacturing methods on microstructure and wear performance of plasma sprayed alumina-titania coatings. Surface and Coating Technology, 202(1), pp.34-44