Effect of feedstock and plasma gun on the microstructure and bioactivity of plasma sprayed bioactive glass coatings
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Other documents of the author: Cañas Recacha, Eugeni; Rojas, O.; Orts Tarí, María José; Ageorges, H.; Sánchez-Vilches, Enrique
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comunitat-uji-handle2:10234/7033
comunitat-uji-handle3:10234/8618
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Title
Effect of feedstock and plasma gun on the microstructure and bioactivity of plasma sprayed bioactive glass coatingsAuthor (s)
Date
2021-01-25Publisher
ElsevierISSN
0257-8972Bibliographic citation
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. 126704Type
info:eu-repo/semantics/articlePublisher version
https://www.sciencedirect.com/science/article/pii/S0257897220313748Version
info:eu-repo/semantics/acceptedVersionSubject
Abstract
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. [-]
Is part of
Surface and Coatings Technology, 2021, vol. 406, p. 126704Funder Name
Universitat Jaume I | Departamento Administrativo de Ciencia, Tecnología e Innovación (COLCIENCIAS) de Colombia
Project code
E-2018-20 | PREDOC / 2015/50 | 1115745-57862 | beca de doctorado 727
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info:eu-repo/semantics/openAccess
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