Effect of feedstock and plasma gun on the microstructure and bioactivity of plasma sprayed bioactive glass coatings
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Títol
Effect of feedstock and plasma gun on the microstructure and bioactivity of plasma sprayed bioactive glass coatingsAutoria
Data de publicació
2021-01-25Editor
ElsevierISSN
0257-8972Cita bibliogràfica
CAÑAS, E., et al. Effect of feedstock and plasma gun on the microstructure and bioactivity of plasma sprayed bioactive glass coatings. Surface and Coatings Technology, 2021, vol. 406, p. 126704Tipus de document
info:eu-repo/semantics/articleVersió de l'editorial
https://www.sciencedirect.com/science/article/pii/S0257897220313748Versió
info:eu-repo/semantics/acceptedVersionParaules clau / Matèries
Resum
Plasma–sprayed 45S5 bioactive glass coatings were manufactured using two types of powder
feedstocks (commercial and lab–made 45S5 glass) and two plasma torches (single and triple
cathode) to analyse their influence ... [+]
Plasma–sprayed 45S5 bioactive glass coatings were manufactured using two types of powder
feedstocks (commercial and lab–made 45S5 glass) and two plasma torches (single and triple
cathode) to analyse their influence on the microstructure and bioactivity of the coatings.
Besides, the volatilisation of glass oxides such as Na2O and P2O5 during the deposition was
studied. All coatings were microstructurally characterised by scanning electron microscopy,
X–ray diffraction and X–ray dispersive energy analysis. Moreover, the bioactivity of the
sprayed coatings was studied by immersing the coatings in Simulated Body Fluid until 14
days.
The coatings obtained using the triple cathode torch showed similar thickness, less total
porosity and greater microstructural homogeneity than the coating deposited with the single
cathode torch. X–ray dispersive energy analysis revealed lower amounts of sodium and
phosphorus at the surrounding of the lamellae, due to its volatilisation during the formation of
the coatings. The volatilisation of these elements varied depending on the type of feedstock
and plasma jet enthalpy. Concerning the bioactivity of the coatings, all of them have
developed a hydroxycarbonate apatite layer on their surface. [-]
Publicat a
Surface and Coatings Technology, 2021, vol. 406, p. 126704Entitat finançadora
Universitat Jaume I | Departamento Administrativo de Ciencia, Tecnología e Innovación (COLCIENCIAS) de Colombia
Codi del projecte o subvenció
E-2018-20 | PREDOC / 2015/50 | 1115745-57862 | beca de doctorado 727
Drets d'accés
info:eu-repo/semantics/openAccess
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