Glass–ceramics, containing apatite and wollastonite (A/W) crystals in the MgO–CaO–SiO2–P2O5 glassy matrix, show the ability to form tight chemical bonds with living tissues when implanted in the body, as demonstrated by Kokubo and co-workers. However, the medical applications are mainly limited to non-load bearing conditions because of their poor mechanical properties. To overcome this drawback, a coating of the A/W glass–ceramic could be deposited onto a titanium substrate, in order to combine the good bioactivity of the bioceramic and the good mechanical strength of the titanium alloy base material. In this study, A/W powders obtained from commercial raw materials were thermally sprayed by APS (atmospheric plasma spraying) on Ti–6Al–4V substrates. Since in the as-sprayed conditions the coating microstructure was defective because of pores and cracks, thermal treatments on A/W plasma-sprayed coatings were conducted to enhance the coating microstructure. In order to gain a de...

Thermal and physical characterisation of apatite/wollastonite bioactive glass-ceramics / Cannillo, Valeria; F., Pierli; S., Sampath; Siligardi, Cristina. - In: JOURNAL OF THE EUROPEAN CERAMIC SOCIETY. - ISSN 0955-2219. - ELETTRONICO. - 29:4(2009), pp. 611-619. [10.1016/j.jeurceramsoc.2008.06.034]

Thermal and physical characterisation of apatite/wollastonite bioactive glass-ceramics

CANNILLO, Valeria;SILIGARDI, Cristina
2009

Abstract

Glass–ceramics, containing apatite and wollastonite (A/W) crystals in the MgO–CaO–SiO2–P2O5 glassy matrix, show the ability to form tight chemical bonds with living tissues when implanted in the body, as demonstrated by Kokubo and co-workers. However, the medical applications are mainly limited to non-load bearing conditions because of their poor mechanical properties. To overcome this drawback, a coating of the A/W glass–ceramic could be deposited onto a titanium substrate, in order to combine the good bioactivity of the bioceramic and the good mechanical strength of the titanium alloy base material. In this study, A/W powders obtained from commercial raw materials were thermally sprayed by APS (atmospheric plasma spraying) on Ti–6Al–4V substrates. Since in the as-sprayed conditions the coating microstructure was defective because of pores and cracks, thermal treatments on A/W plasma-sprayed coatings were conducted to enhance the coating microstructure. In order to gain a de...
2009
29
4
611
619
Thermal and physical characterisation of apatite/wollastonite bioactive glass-ceramics / Cannillo, Valeria; F., Pierli; S., Sampath; Siligardi, Cristina. - In: JOURNAL OF THE EUROPEAN CERAMIC SOCIETY. - ISSN 0955-2219. - ELETTRONICO. - 29:4(2009), pp. 611-619. [10.1016/j.jeurceramsoc.2008.06.034]
Cannillo, Valeria; F., Pierli; S., Sampath; Siligardi, Cristina
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/613104
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