|dc.contributor.author||Cañas Recacha, Eugeni||
|dc.contributor.author||Orts Tarí, María José||
|dc.contributor.author||Sánchez Vilches, Enrique Javier||
|dc.identifier.citation||CAÑAS RECACHA, Eugeni; VICENT CABEDO, Mónica; ORTS TARÍ, Mª José, SÁNCHEZ VILCHES, Enrique. Nuevas aplicaciones de las fritas cerámicas: vidrios bioactivos . En: QUALICER. Congreso mundial de la calidad del azulejo y del pavimento cerámico (14º : 2016)||ca_CA
|dc.description.abstract||Companies in the frit, glaze, and ceramic colour producing subsector know a great deal
about the different frit-manufacturing process stages such as raw materials milling and
mixing, as well as fusing the raw materials mixture to obtain the frit. This knowledge can
be used to break new ground in frit applications and to obtain products with high added
value, such as bioactive glasses.
Bioactive glasses are amorphous materials that are able to interact with bone cells,
thanks to surface growth of a hydroxycarbonate apatite (HCA) layer when they enter into
contact with a biological fluid. This bioactivity, together with their relatively low cost
compared to that of the materials used at present, makes such materials particularly
attractive for obtaining prosthesis and implant coatings. Among the numerous coating
methods, atmospheric plasma spraying is one of the most widely used techniques for
industrial-scale deposition of this type of coating owing to its versatility, simplicity, and
relatively low cost.
This study presents a methodology for obtaining bioactive glass coatings by thermal
plasma spraying. The methodology includes: frit synthesis; design, preparation and
characterisation of appropriate powders and bioactive glass suspensions for thermal
plasma spraying; optimisation of the deposition conditions for the obtainment of coatings
from powders as well as from suspensions; and characterisation of the end coatings.
It was verified that, after deposition, the resulting coatings exhibited the typical
microstructure of layers deposited by thermal plasma spraying. In this case, as feedstock
of a glassy nature was involved, the microstructure consisted of a matrix of flattened
drops of molten glass, together with rounded pores and cracks. The results obtained also
indicated that the amorphous nature of the jetted frit was maintained in the end coating,
as was intended. However, low adhesion to the substrate was also observed, it being
necessary to use a bonding layer between the substrate and the bioactive glass layer.
Consequently, further investigation is needed to improve the bond strength and other
properties of these coatings, as well as to evaluate their bioactivity.||ca_CA
|dc.description.sponsorShip||The authors of this study thank Universitat Jaume I of Castellón for the support provided
in funding the project RECUBIO (P1–1B2013–69) and thank the company FRITTA, S.L.
for the fusion of the material in a pilot furnace.||
|dc.title||Nuevas aplicaciones de las fritas cerámicas: vidrios bioactivos||ca_CA