TY - JOUR
T1 - Plasma-assisted deposition of bone apatite-like thin films from natural apatite
AU - Bianchi, Michele
AU - Gambardella, Alessandro
AU - Graziani, Gabriela
AU - Liscio, Fabiola
AU - Cristina Maltarello, Maria
AU - Boi, Marco
AU - Berni, Matteo
AU - Bellucci, Devis
AU - Marchiori, Gregorio
AU - Valle, Francesco
AU - Russo, Alessandro
AU - Marcacci, Maurilio
PY - 2017/7/15
Y1 - 2017/7/15
N2 - In orthopedics and dentistry, novel approaches for fabricating biomimetic and mechanically robust bioactive coatings are highly desirable in order to truly improve the clinical results of coated implants compared to uncoated ones. In this paper, a biological-like apatite coating is deposited for the first time by plasma-assisted deposition of a natural apatite source. Specifically, we deposited bone apatite-like (BAL) thin films from bone apatite targets by pulsed electron deposition (PED). Morphology, composition, structure and mechanical properties of as-deposited and annealed BAL and stoichiometric hydroxyapatite (HA) films were investigated. While as-deposited BAL and HA films were poorly crystalline at room temperature, they crystallized to an extent very close to that of natural apatite when annealed at 400 °C. In addition, FTIR analysis pointed out that BAL films closely resembled the composition of the starting natural apatite target. Finally, nanoindentation tests indicated that BAL films with high mechanical properties could be deposited by PED.
AB - In orthopedics and dentistry, novel approaches for fabricating biomimetic and mechanically robust bioactive coatings are highly desirable in order to truly improve the clinical results of coated implants compared to uncoated ones. In this paper, a biological-like apatite coating is deposited for the first time by plasma-assisted deposition of a natural apatite source. Specifically, we deposited bone apatite-like (BAL) thin films from bone apatite targets by pulsed electron deposition (PED). Morphology, composition, structure and mechanical properties of as-deposited and annealed BAL and stoichiometric hydroxyapatite (HA) films were investigated. While as-deposited BAL and HA films were poorly crystalline at room temperature, they crystallized to an extent very close to that of natural apatite when annealed at 400 °C. In addition, FTIR analysis pointed out that BAL films closely resembled the composition of the starting natural apatite target. Finally, nanoindentation tests indicated that BAL films with high mechanical properties could be deposited by PED.
KW - Biogenic source
KW - Bone implant
KW - FTIR
KW - Hydroxyapatite
KW - Indentation and hardness
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U2 - 10.1016/j.matlet.2017.04.005
DO - 10.1016/j.matlet.2017.04.005
M3 - Article
AN - SCOPUS:85017432311
VL - 199
SP - 32
EP - 36
JO - Materials Letters
JF - Materials Letters
SN - 0167-577X
ER -