Nalazite se na CroRIS probnoj okolini. Ovdje evidentirani podaci neće biti pohranjeni u Informacijskom sustavu znanosti RH. Ako je ovo greška, CroRIS produkcijskoj okolini moguće je pristupi putem poveznice www.croris.hr
izvor podataka: crosbi

Mechanical properties of zirconia ceramics biomimetically coated with calcium deficient hydroxyapatite (CROSBI ID 294820)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Macan, Jelena ; Dutour Sikirić, Maja ; Deluca, Marco ; Bermejo, Raul ; Baudin, Carmen ; Plodinec, Milivoj ; Salamon, Krešimir ; Čeh, Miran ; Gajović, Andreja Mechanical properties of zirconia ceramics biomimetically coated with calcium deficient hydroxyapatite // Journal of the mechanical behavior of biomedical materials, 111 (2020), 104006, 12. doi: 10.1016/j.jmbbm.2020.104006

Podaci o odgovornosti

Macan, Jelena ; Dutour Sikirić, Maja ; Deluca, Marco ; Bermejo, Raul ; Baudin, Carmen ; Plodinec, Milivoj ; Salamon, Krešimir ; Čeh, Miran ; Gajović, Andreja

engleski

Mechanical properties of zirconia ceramics biomimetically coated with calcium deficient hydroxyapatite

Mechanical properties and stability of porous tetragonal yttria-stabilised zirconia (Y-TZ) ceramics, biomimetically coated with calcium deficient hydroxyapatite (CaDHA) to obtain a bioactive material, were investigated. The 5.7 mol% yttria-stabilised tetragonal zirconia was obtained by sol-gel process and sintered at different temperatures to obtain a homogeneous and porous structure whose strength would match that of human bone. Sufficient strength was achieved by sintering at 1400 °C. The CaDHA coating was obtained at room temperature by a simplified preparation method consisting of immersion of the Y-TZ ceramics into a calcifying solution, after a short surface pretreatment in HCl. Although HAP or -TCP are more frequently used, CaDHA was chosen due to its structural similarity to the bone mineral and ability to support bone ingrowth to a greater extent than biphasic calcium phosphates. To verify the applicability CaDHA coatings, we tested their adherence to Y-TZ ceramics for the first time to the best of our knowledge. Vickers hardness (3.8 ± 0.2 GPa) reflected the hardness of underlying ceramic. The tensile strength (269 ± 52 MPa) and Weibull modulus (5) of the obtained biomaterials matched or exceeded those of bone. There was no statistical difference in the tensile strength between the coated (269 ± 52 MPa) and the uncoated (239 ± 46 MPa) ceramics. The Y-TZ- CaDHA coating system presented adequate structural integrity under scratch test with critical load for coating cracking of 18 ± 2 N. These results indicate the potential of the prepared bioceramic to be used as bone implants.

yttria stabilised zirconia ; sol-gel process ; calcium phosphates ; metastable calcifying solution ; mechanical properties

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

Podaci o izdanju

111

2020.

104006

12

objavljeno

1751-6161

1878-0180

10.1016/j.jmbbm.2020.104006

Povezanost rada

Fizika, Kemija, Kemijsko inženjerstvo

Poveznice
Indeksiranost