Coatings were grown on the AZ31 Mg alloy by a hard anodizing process in the hot glycerol phosphate-containing electrolyte. Anodizing conditions were optimized, maximizing corrosion resistance estimated by impedance measurements carried out in Hank's solution at 37 °C. A post anodizing annealing treatment (350 °C for 24 h) allowed us to further enhance the corrosion resistance of the coatings mainly containing magnesium phosphate according to energy-dispersive X-ray spectroscopy and Raman analyses. Gravimetric measurements revealed a hydrogen evolution rate within the limits acceptable for application of AZ31 in biomedical devices. In vitro tests demonstrated that the coatings are biocompatible with a preosteoblast cell line.

Zaffora A., Di Franco F., Virtu D., Carfi Pavia F., Ghersi G., Virtanen S., et al. (2021). Tuning of the Mg Alloy AZ31 Anodizing Process for Biodegradable Implants. ACS APPLIED MATERIALS & INTERFACES, 13(11), 12866-12876 [10.1021/acsami.0c22933].

Tuning of the Mg Alloy AZ31 Anodizing Process for Biodegradable Implants

Zaffora A.;Di Franco F.;Carfi Pavia F.;Ghersi G.;Santamaria M.
2021-01-01

Abstract

Coatings were grown on the AZ31 Mg alloy by a hard anodizing process in the hot glycerol phosphate-containing electrolyte. Anodizing conditions were optimized, maximizing corrosion resistance estimated by impedance measurements carried out in Hank's solution at 37 °C. A post anodizing annealing treatment (350 °C for 24 h) allowed us to further enhance the corrosion resistance of the coatings mainly containing magnesium phosphate according to energy-dispersive X-ray spectroscopy and Raman analyses. Gravimetric measurements revealed a hydrogen evolution rate within the limits acceptable for application of AZ31 in biomedical devices. In vitro tests demonstrated that the coatings are biocompatible with a preosteoblast cell line.
2021
Settore ING-IND/23 - Chimica Fisica Applicata
Zaffora A., Di Franco F., Virtu D., Carfi Pavia F., Ghersi G., Virtanen S., et al. (2021). Tuning of the Mg Alloy AZ31 Anodizing Process for Biodegradable Implants. ACS APPLIED MATERIALS & INTERFACES, 13(11), 12866-12876 [10.1021/acsami.0c22933].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/509663
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