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Pathway to tailor the phase composition, microstructure and mechanical properties of pulsed laser deposited cobalt-substituted calcium phosphate coatings on titanium
dc.creator | Marković, Smilja | |
dc.creator | Rau, Julietta V. | |
dc.creator | De Bonis, Angela | |
dc.creator | De Bellis, Giovanni | |
dc.creator | Stojanović, Zoran S. | |
dc.creator | Veselinović, Ljiljana M. | |
dc.creator | Mitrić, Miodrag | |
dc.creator | Ignjatović, Nenad L. | |
dc.creator | Škapin, Srečo Davor | |
dc.creator | Vengust, Damjan | |
dc.date.accessioned | 2022-04-26T08:10:39Z | |
dc.date.available | 2022-04-26T08:10:39Z | |
dc.date.issued | 2022 | |
dc.identifier.issn | 0257-8972 | |
dc.identifier.uri | https://vinar.vin.bg.ac.rs/handle/123456789/10206 | |
dc.description.abstract | Dense calcium phosphate-based ceramics were fabricated to be used as targets for pulsed laser deposition (PLD). Nanostructured cobalt-substituted hydroxyapatite (Co:HAP) was used as a starting powder. To vary phase composition and microstructure of targets, two sintering approaches were applied, conventional (CS) and two-step sintering (TSS). The obtained results show that in both cases biphasic calcium phosphate (BCP) ceramics (targets) were prepared, with slightly different HAP-to-β–TCP amount ratio and a significantly different microstructure. While the CS method yielded fully dense ceramics with an average grain size of 1.3 μm, the ceramics prepared by TSS had a density of 98.5%, with a predominant grain size below 100 nm. (Ca + Co)P coatings were prepared by PLD of (Ca + Co)P targets. The temperature of the Ti substrate was adjusted to be 25 and 500 °C. The results show that the phase composition of (Ca + Co)P coatings depended on the phase composition of targets as well as on the temperature of the Ti substrate. The coating prepared at 25 °C using CS target consisted of three calcium phosphate phases, HAP, β–TCP and α–TCP; when the TSS target was used, the coating was biphasic, containing HAP and β–TCP. When the substrate was heated to 500 °C, regardless of whether the CS or the TSS target was used, the deposited coatings were composed of HAP and α–TCP. Due to different phase compositions, the (Ca + Co)P coatings deposited at 25 °C showed an improved hardness compared to those deposited at 500 °C. The obtained results confirmed that the phase composition, morphology and mechanical properties of 0.3 μm thick (Ca + Co)P coatings on a Ti substrate can be tailored by employing (Ca + Co)P targets with different microstructures, and also by varying the temperature of the Ti substrate during deposition experiments. | en |
dc.language | en | |
dc.relation | info:eu-repo/grantAgreement/MESTD/inst-2020/200175/RS// | |
dc.rights | restrictedAccess | |
dc.source | Surface and Coatings Technology | |
dc.subject | Calcium phosphate | en |
dc.subject | Coatings | en |
dc.subject | Cobalt-substituted hydroxyapatite | en |
dc.subject | Pulsed laser deposition | en |
dc.title | Pathway to tailor the phase composition, microstructure and mechanical properties of pulsed laser deposited cobalt-substituted calcium phosphate coatings on titanium | en |
dc.type | article | en |
dc.rights.license | ARR | |
dc.citation.volume | 437 | |
dc.citation.spage | 128275 | |
dc.identifier.wos | 000779412500005 | |
dc.identifier.doi | 10.1016/j.surfcoat.2022.128275 | |
dc.type.version | publishedVersion | |
dc.identifier.scopus | 2-s2.0-85126097016 |
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