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Rau JV, Antoniac I, Fosca M, De Bonis A, Blajan AI, Cotrut C, Graziani V, Curcio M, Cricenti A, Niculescu M, Ortenzi M, Teghil R. Glass-ceramic coated Mg-Ca alloys for biomedical implant applications. Mater Sci Eng C Mater Biol Appl 2016; 64:362-369. [PMID: 27127065 DOI: 10.1016/j.msec.2016.03.100] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Revised: 03/17/2016] [Accepted: 03/29/2016] [Indexed: 11/15/2022]
Abstract
Biodegradable metals and alloys are promising candidates for biomedical bone implant applications. However, due to the high rate of their biodegradation in human body environment, they should be coated with less reactive materials, such, for example, as bioactive glasses or glass-ceramics. Fort this scope, RKKP composition glass-ceramic coatings have been deposited on Mg-Ca(1.4wt%) alloy substrates by Pulsed Laser Deposition method, and their properties have been characterized by a number of techniques. The prepared coatings consist of hydroxyapatite and wollastonite phases, having composition close to that of the bulk target material used for depositions. The 100μm thick films are characterized by dense, compact and rough morphology. They are composed of a glassy matrix with various size (from micro- to nano-) granular inclusions. The average surface roughness is about 295±30nm due to the contribution of micrometric aggregates, while the roughness of the fine-texture particulates is approximately 47±4nm. The results of the electrochemical corrosion evaluation tests evidence that the RKKP coating improves the corrosion resistance of the Mg-Ca (1.4wt%) alloy in Simulated Body Fluid.
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Affiliation(s)
- J V Rau
- Istituto di Struttura della Materia, Consiglio Nazionale delle Ricerche, Via del Fosso del Cavaliere 100, 00133 Rome, Italy.
| | - I Antoniac
- University Politehnica of Bucharest, Splaiul Independentei 313, sector 6, 77206, Bucharest, Romania.
| | - M Fosca
- Istituto di Struttura della Materia, Consiglio Nazionale delle Ricerche, Via del Fosso del Cavaliere 100, 00133 Rome, Italy
| | - A De Bonis
- "Titu Maiorescu" University, Faculty of Medicine, Street Pictor Gheorghe Petrascu 67A, sector 3, Bucharest, Romania
| | - A I Blajan
- University Politehnica of Bucharest, Splaiul Independentei 313, sector 6, 77206, Bucharest, Romania
| | - C Cotrut
- University Politehnica of Bucharest, Splaiul Independentei 313, sector 6, 77206, Bucharest, Romania
| | - V Graziani
- Istituto di Struttura della Materia, Consiglio Nazionale delle Ricerche, Via del Fosso del Cavaliere 100, 00133 Rome, Italy
| | - M Curcio
- "Titu Maiorescu" University, Faculty of Medicine, Street Pictor Gheorghe Petrascu 67A, sector 3, Bucharest, Romania
| | - A Cricenti
- Istituto di Struttura della Materia, Consiglio Nazionale delle Ricerche, Via del Fosso del Cavaliere 100, 00133 Rome, Italy
| | - M Niculescu
- "Titu Maiorescu" University, Faculty of Medicine, Street Pictor Gheorghe Petrascu 67A, sector 3, Bucharest, Romania
| | - M Ortenzi
- Istituto di Struttura della Materia, Consiglio Nazionale delle Ricerche, Via del Fosso del Cavaliere 100, 00133 Rome, Italy
| | - R Teghil
- Dipartimento di Scienze, Università della Basilicata, Viale dell'Ateneo Lucano 10, 85100 Potenza, Italy
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