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Herein the preparation of Sr2 +-doped calcium phosphate (CaP) coatings on poly(etheretherketone) (PEEK) substrates by pulsed electron deposition (PED) was investigated. Hydroxyapatites (HA) substituted with tailored amounts of Sr2 + up to 9 wt% were synthesized to generate the deposition targets. Dense and uniform amorphous CaP films having Sr/Ca molar ratios close to that of targets were achieved. The roughness and the wettability of the bare PEEK were significantly enhanced after coating deposition. The presence of Sr2 + led to a slight increase of the particles size while it did not mainly affect the RMS of the coatings that consisted of nanostructured aggregates of globular shape. After a mild annealing treatment at 130 °C for 6 h, the amorphous coatings transformed into nanocrystalline HA films incorporating Sr2 + having Sr/Ca molar ratios close to those of the as-deposited films. The annealing did not …
Publication date: 
15 Jun 2017

Michele Bianchi, Lorenzo Degli Esposti, Alberto Ballardini, Fabiola Liscio, Matteo Berni, Alessandro Gambardella, Sander CG Leeuwenburgh, Simone Sprio, Anna Tampieri, Michele Iafisco

Biblio References: 
Volume: 319 Pages: 191-199
Surface and Coatings Technology