2026-04-17T05:16:52Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/1845542025-12-04T20:55:06Zcom_2072_1057col_2072_478796col_2072_478917

00925njm 22002777a 4500 dc Garrido Domínguez, Beatriz author Albaladejo-Fuentes, Vicente author García Cano, Irene author Dosta Parras, Sergi author 2022-03-30T14:34:05Z 2022-03-30T14:34:05Z 2021-12-01 2022-03-30T14:34:06Z Cold gas spray (CGS) technology has allowed the development of biofunctional coatings composed of 45S5 and polyetheretherketone (PEEK). The combination of a bioactive glass material embedded in a polymeric matrix makes this composite an interesting material for orthopedic applications since this composite meets the biomechanical and biological requirements of an implant. In the present study, blends of bioactive glass 45S5 and PEEK powder with different granulometry and 45S5/PEEK ratio have been prepared. These mixtures of powders have been deposited onto PEEK substrates by CGS with the goal of incorporating a bioactive additive to the biocompatible polymer, which can improve the bone-implant interaction of PEEK. The deposition efficiency (DE) of the coatings has been evaluated, and from the results obtained, it was possible to conclude that DE is significantly affected by the granulometry and by the 45S5/PEEK ratio of the blends. By scanning electron microscopy (SEM) inspection, it was observed that the use of blends with high 45S5/PEEK ratio lead to the deposition of coatings with high content of 45S5. Finally, the friction behavior of the coatings was analyzed performing ball-on-disk tests and these experiments showed that the presence of glass particles has a beneficial role in the wear resistance. Vidre Revestiments Glass Coatings Development of Bioglass/PEEK Composite Coating by Cold Gas Spray for Orthopedic Implants