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2019, vol. 60, iss. 2, pp. 147-151
Mechanical properties and microstructure of the ZrO25CaO/NiCrAl coating system
aIMTEL Institute, Belgrade, Serbia
bUniversity of Belgrade, Faculty of Agriculture, Serbia
cUniversity of Belgrade, Faculty of Technology and Metallurgy, Serbia
dChemical Power Sources Institute - IHIS, Belgrade, Serbia
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)

Keywords: APS - atmospheric plasma spraying; NiCrAl; ZrO25CaO; microstructure; interface; microhardness; bond strength
ZrO25CaO is a versatile class of material that can be sintered or plasma spray deposited in combination with other materials on the implant substrate. Due to brittleness the organic ceramic hydroxyapatite Ca10(PO4)6(OH)2 - (HA) is not suitable for use as a separate material in the process of making implants. In order to improve the mechanical characteristics and osteoconductivity, to HA ceramics added are dual systems of oxide solid solutions, of which one is also ZrO25CaO. Ceramics ZrO2-CaO(95%-5%) as a biomaterial facilitates osteoconductivity in new bone formation around the implant. This paper represents the need to develop a system of ZrO25CaO/NiCrAl coatings that will with their mechanical and structural characteristics find application on implant parts. In this context, using the atmospheric plasma spray process deposited were the ZrO25CaO/NiCrAl coatings system on stainless steel substrates X15Cr13 (EN 1.4024). Analysis of the morphology of the powder particles and the surface of the ZrO25CaO coatings was carried out on the SEM. The microstructure of the layers of the coatings system was analyzed on the OM. Mechanical properties of the coating were determined by examining the microhardness using the HV0.3 method and bond strength by tensile testing according to the standard (ASTMC633-1).
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article language: English
document type: Scientific Paper
DOI: 10.5937/zasmat1902147M
published in SCIndeks: 14/06/2019
Creative Commons License 4.0

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