Article metrics

  • citations in SCindeks: [5]
  • citations in CrossRef:0
  • citations in Google Scholar:[=>]
  • visits in previous 30 days:15
  • full-text downloads in 30 days:7
article: 1 from 1  
Zaštita materijala
2017, vol. 58, iss. 4, pp. 509-514
article language: Serbian
document type: Scientific Paper
published on: 08/01/2018
doi: 10.5937/ZasMat1704509M
Creative Commons License 4.0
Characterization of composite bio inert aps- AL2O325WT.%(ZrO28%Y2O3) coating
IMTEL Institute, Belgrade



Micromechanical criteria of damage and fracture (MESTD - 174004)
Development of covering and core production technology based on local raw materials for manufacturing of special coated electrodes designed for steel arc welding (MESTD - 34016)


Composites Al2O3ZrO2 and ZrO2Al2O3 are inert perspective biomaterials for use in implants due to their biocompatibility and mechanical properties that combine high flexural strength with high toughness. Ceramics Al2O3 has excellent biocompatibility and wear resistance, however, this ceramics has low flexural strength and toughness. In order to increase the mechanical properties of Al2O3 ceramics oxide ceramics ZrO2 is added to it. Oxide ZrO2 is inert in a physiological environment and has higher flexural strength, higher fracture toughness, and lower Young’s modulus, compared with pure oxide Al2O3. Ceramics Al2O3 and ZrO2 are extensively used for the production of hip prosthesis. By mixing both materials the mechanical strength can be increased. Also, the mix of ceramic materials Al2O3 and ZrO2 has a better resistance against uneven surfaces and damage under load during a luxation test compared to the pure ceramics Al2O3. The aim of this study was to analyze the mechanical characteristics (microhardness HV0.1 and bond strength) and microstructure of the composite coating APS-Al2O3(ZrO28%Y2O3) with a content of 25wt.%ZrO28%Y2O3 on an optical microscope (OM) and scanning electron microscope (SEM). Results of testing mechanical and structural characteristics indicate that the layers of ceramic coating Al2O3ZrO2 can be successfully applied in orthopedic implants.


APS; Al2O325wt.; (ZrO28; Y2O3); implants; microstructure; microhardness; bondstrength


*** (2012) Material product data sheet: Metco 105NS aluminum oxide thermal spray powders. Sulzer Metco, DSMTS-0005.1
*** (2012) Material Product Data Sheet, Metco 204B-NS: 8% Yttria stabilized zirconia agglomerated and HOSP™ thermal spray powders. Sulzer Metco, DSMTS-0001.2
*** (2008) ASTM C633-1: Standard test method for adhesion or cohesion strength of thermal spray coatings. Reapproved
Ardlin, B.I. (2002) Transformation-toughened zirconia for dental inlays, crowns and bridges: chemical stability and effect of low-temperature aging on flexural strength and surface structure. Dental Materials, 18(8): 590-595
Kaka, D., Mrdak, M., Kolumbić, Z., Krumes, D. (2005) Influence on the parameters of plasma spraying process at thermal fatigue of thermal barrier coating: ZrO2MgO. in: 1th International conference on heat treatment and surface engineering of tools and dies, Pula, Croatia, p. 335-340
Mrdak, M., Bajić, N., Veljić, D., Rakin, M., Pekez, J., Karastojković, Z. (2017) Testing adhesive bond strength and fracture mechanisms of thicker and porous plasma spray coatings, ANNALS of Faculty Engineering Hunedoara. International Journal of Engineering, Tome XV, Fascicule 1, p.153-156
Mrdak, M., Bajić, N., Veljić, D., Rakin, M., Pekez, J., Karastojković, Z. (2016) Testing adhesive bond strength and fracture mechanisms of thicker and porous plasma spray coatings. in: VI International Conference Industrial Engineering and Environmental Protection 2016 (IIZS 2016), University of Novi Sad, Technical faculty Mihajlo Pupin, Zrenjanin, p. 249-253
Mrdak, M., Rakin, M., Medjo, B., Bajić, N. (2015) Experimental Study of Insulating Properties and Behaviour of Thermal Barrier Coating Systems in Thermo Cyclic Conditions. Materials & Design, 337-343; 67
Mrdak, M.R., Vencl, A., Nedeljkovic, B.D., Stanković, M. (2013) Influence of plasma spraying parameters on properties of the thermal barrier coatings. Materials Science and Technology, 29(5): 559-567
Mrdak, M.R. (2013) Ispitivanje mehaničkih i strukturnih osobina prevlaka otpornih na eroziju i visoke temperature. in: SERBIATRIB'13, 13th International Conference on Tribology, Kragujevac, Serbia, p. 426-432
Mrdak, M.R. (2016) Monografija - plazma sprej procesi i svojstva za titnih prevlaka
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
Oberbach, T., Begand, S., Glien, W., Kaddick, C. (2007) Luxation test of different ceramic on ceramic couplings. Key Engineering Materials, 330-332, 1235-1238
Vencl, A., Arostegui, S., Favaro, G., Zivić, F., Mrdak, M., Mitrović, S., Popović, V. (2011) Evaluation of adhesion/cohesion bond strength of the thick plasma spray coatings by scratch testing on coatings cross-sections. Tribology International, 44(11): 1281-1288