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Barium titanate-based bilayer functional coatings on Ti alloy biomedical implants

Title data

Poon, Kara K. ; Schafföner, Stefan ; Einarsrud, Mari-Ann ; Glaum, Julia:
Barium titanate-based bilayer functional coatings on Ti alloy biomedical implants.
In: Journal of the European Ceramic Society. Vol. 41 (2021) Issue 4 . - pp. 2918-2922.
ISSN 0955-2219
DOI: https://doi.org/10.1016/j.jeurceramsoc.2020.12.023

Project information

Project financing: Research Council of Norway [FRINATEK Project No. 250098] and by Horizon 2020 Marie Skłodowska-Curie Actions [H2020 MSCA 655866].

Abstract in another language

Piezoelectric coatings have the ability to functionalise conventional structural materials into responsive devices. Today, piezoelectric coatings have been applied to both rigid and flexible substrates for sensing, actuating, and energy harvesting applications. We envision (Ba,Ca)(Zr,Ti)O3 (BCZT) piezoelectric coatings for biomedical use such as in vivo sensing or electrical cell stimulation. However, reliable processing routes for the development of BCZT ceramics as a functionalisation coating on biomedical substrates are required. In this work, the synthesis of bilayer BCZT and CaTiO3 ceramic coatings on Ti6Al4V metal substrates via spray-deposition and heat-treatment was investigated. For thin coatings, reactions at the metal/ceramic interface led to the development of a porous interface reaction region partly consisting of CaO. The hygroscopicity of CaO affects the adhesion of the coating to Ti6Al4V at ambient conditions. Minimisation of the kinetic contributions to these interface reactions were achieved by increasing the coating thickness.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Barium titanate;Ti6Al4V; Ceramic coating; Microstructure; EPMA WDS
Institutions of the University: Faculties
Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Ceramic Materials
Faculties > Faculty of Engineering Science > Chair Ceramic Materials > Chair Ceramic Materials - Univ.-Prof. Dr.-Ing. Stefan Schafföner
Result of work at the UBT: No
DDC Subjects: 600 Technology, medicine, applied sciences
600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 31 Mar 2023 09:53
Last Modified: 31 Mar 2023 09:53
URI: https://eref.uni-bayreuth.de/id/eprint/75762