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Designing, fabrication and characterization of nanostructured functionally graded HAp/BCP ceramics
dc.creator | Marković, Smilja | |
dc.creator | Lukić, Miodrag J. | |
dc.creator | Škapin, Srečo Davor | |
dc.creator | Stojanović, Boban | |
dc.creator | Uskoković, Dragan | |
dc.date.accessioned | 2017-06-10T15:45:07Z | |
dc.date.available | 2016-10-27T15:45:07Z | |
dc.date.issued | 2015 | |
dc.identifier.issn | 0272-8842 | |
dc.identifier.uri | https://dais.sanu.ac.rs/123456789/588 | |
dc.description.abstract | Nanostructured calcium phosphate functionally graded materials (FGMs) with simultaneous gradients of density, phase composition, and mechanical properties were fabricated by consecutive uniaxial pressing of stoichiometric (SHAp) and calcium deficient (CDHAp) hydroxyapatite powders in multilayered samples and reaction sintering. During sintering procedure SHAp composition remained stable (HAp) while CDHAp was phase transformed in biphasic calcium phosphate (BCP, i.e. HAp+β-TCP) yielding HAp/BCP FGMs. To reduce mismatch stress between adjacent layers, generated during sintering, gradient of phase composition was optimized by introducing intermediate layer(s) made from mixture of SHAp and CDHAp in appropriate mass ratio. Optimal processing conditions for preparation of nanostructured ceramics were provided via two-step sintering. High-quality FGMs structure, without delamination, cracks and micro-structural damages was observed by SEM technique; moreover, a detailed examination by FE−SEM established the unidirectional (perpendicular with respect to the layers) gradual change of microstructure, from fully dense to ~40% of porosity. Detailed micro-Raman and FTIR spectroscopy studies showed increase of β-TCP amount along the FGMs height, confirming gradient of phase composition. Mechanical properties measured by microindentation revealed gradual change of microhardness from 650 to 115 HV, with simultaneous change of Young's modulus from 92 to 24 GPa. | en |
dc.format | (2014) - | |
dc.format | application/pdf | |
dc.language | en | |
dc.publisher | Elsevier | |
dc.relation | info:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45004/RS// | |
dc.relation | Bilateral cooperation program between the Republic of Serbia and the Republic of Slovenia, Project 451-03-1251/2012-09/06 | |
dc.rights | embargoedAccess | |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/4.0/ | |
dc.source | Ceramics International | |
dc.subject | sintering | |
dc.subject | functionally graded materials | |
dc.subject | calcium phosphates | |
dc.subject | nanostructure | |
dc.subject | mechanical properties | |
dc.title | Designing, fabrication and characterization of nanostructured functionally graded HAp/BCP ceramics | en |
dc.type | article | |
dc.rights.license | BY-NC-ND | |
dcterms.abstract | Стојановић, Бобан; Ускоковић, Драган; Марковић, Смиља; Лукић, Миодраг; Шкапин, Сречо Давор; | |
dc.citation.spage | 2654 | |
dc.citation.epage | 2667 | |
dc.citation.volume | 41 | |
dc.citation.volume | 41 | |
dc.citation.issue | 2, Part B | |
dc.citation.issue | 2 | |
dc.identifier.wos | 000348003100003 | |
dc.identifier.doi | 10.1016/j.ceramint.2014.10.079 | |
dc.identifier.scopus | 2-s2.0-84919458370 | |
dc.description.other | This is the peer‐reviewed version of the paper Marković, S., Lukić, M.J., Škapin, S.D., Stojanović, B., Uskoković, D., 2015. Designing, fabrication and characterization of nanostructured functionally graded HAp/BCP ceramics. Ceramics International 41, 2654–2667. [https://doi.org/10.1016/j.ceramint.2014.10.079] | |
dc.type.version | acceptedVersion | |
dc.identifier.fulltext | https://dais.sanu.ac.rs/bitstream/id/21559/585.pdf | |
dc.identifier.rcub | https://hdl.handle.net/21.15107/rcub_dais_588 |