Electrochemical behaviour of a magnesium alloy containing rare earth elements (2023)
- Authors:
- USP affiliated authors: NUNES, CARLOS ANGELO - EEL ; CATUOGNO, CÉLIA REGINA TOMACHUK DOS SANTOS - EEL ; CURY, PAULA LETÍCIA CORRÊA DE TOLEDO - EEL
- Unidade: EEL
- Subjects: ELETROQUÍMICA; MAGNÉSIO
- Agências de fomento:
- Language: Inglês
- Abstract: Magnesium alloys are promising biomaterials for application in nonpermanent orthopaedic implants, due to their good biocompatibility, biodegradability, and similar mechanical properties to those of human bone [1-3]. Despite of many advantages, the main issue about the use of Mg alloys as biodegradable materials is the high corrosion rate, which leads to undesirable consequences, such as loss of mechanical integrity before total tissue restoration [4-5]. Usually, the addition of rare earth elements improves its corrosion resistance, leading to potential materials for biomedical applications [2]. Thus, this work compared the corrosion resistance of Mg-4.8Y-2.8Gd-0.7Zr wt.% alloy in deferent conditions: as-cast, solution treatment at 525°C-24 h and aged at 250°C for several times. First, the studied material was melted in an inert atmosphere in an induction furnace. Then, it underwent the heat treatment of homogenization, in which the samples encapsulated in a quartz tube were taken to a resistive electric furnace. For the thermal aging treatment, the samples, also encapsulated in a quartz tube, were treated at 7 different times, and cooled in water. To investigate the correlation between the hardening curve and the corrosion behaviour, microhardness measurements were performed for each aging time. The electrochemical behaviour was evaluated in 0.9% NaCl solution at 37 ± 0.5°C by potentiodynamic polarization curves and electrochemical impedance spectroscopy. Microstructural analysis via optical microscopy, scanning electron microscopy, energy dispersive spectroscopy and X-ray spectrometry were used to characterize each stage of the study. The as-cast sample presented higher impedance modulus. The sample aged for 100 h showed a grain size of 86,4 ± 2.5 μm, highest hardness, similar impedance modulus and the lowest corrosion current density value compared to the as-cast sample suggesting good pr
- Imprenta:
- Publisher: Univates
- Publisher place: Lajeado-RS
- Date published: 2023
- Source:
- Título: XXIV Simpósio Brasileiro de Eletroquímica e Eletroletranalítica
- Volume/Número/Paginação/Ano: p. 329, 2023
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ABNT
CURY, Paula Letícia Corrêa de Toledo et al. Electrochemical behaviour of a magnesium alloy containing rare earth elements. 2023, Anais.. Lajeado-RS: Univates, 2023. p. 329. Disponível em: https://www.univates.br/editora-univates/publicacao/413. Acesso em: 05 out. 2024. -
APA
Cury, P. L. C. de T., Ferraz, F. M. B., Freitas, B. X. de, Nunes, C. A., & Catuogno, C. R. T. dos S. (2023). Electrochemical behaviour of a magnesium alloy containing rare earth elements. In XXIV Simpósio Brasileiro de Eletroquímica e Eletroletranalítica (p. 329). Lajeado-RS: Univates. Recuperado de https://www.univates.br/editora-univates/publicacao/413 -
NLM
Cury PLC de T, Ferraz FMB, Freitas BX de, Nunes CA, Catuogno CRT dos S. Electrochemical behaviour of a magnesium alloy containing rare earth elements [Internet]. XXIV Simpósio Brasileiro de Eletroquímica e Eletroletranalítica. 2023 ; 329.[citado 2024 out. 05 ] Available from: https://www.univates.br/editora-univates/publicacao/413 -
Vancouver
Cury PLC de T, Ferraz FMB, Freitas BX de, Nunes CA, Catuogno CRT dos S. Electrochemical behaviour of a magnesium alloy containing rare earth elements [Internet]. XXIV Simpósio Brasileiro de Eletroquímica e Eletroletranalítica. 2023 ; 329.[citado 2024 out. 05 ] Available from: https://www.univates.br/editora-univates/publicacao/413 - Avaliação da resistência à corrosão de ligas de magnésio biodegradáveis para aplicações ortopédicas
- An investigation of the corrosion rate of Mg alloy in Hank´s solution
- Um estudo da taxa de corrosão de ligas de Mg em solução balanceada de Hank´s
- Resistência à corrosão de liga biodegradável de Mg para implantes ortopédicos
- Corrosion behaviour of Mg alloy for biomedical application
- Production, processing and characterization of biodegradable Mg-Gd-Y-Zr alloy for biomedical applications
- Study of the corrosion resistance of a magnesium alloy containing rare earth elements for orthopedic implants
- Estudo da deposição de biopolímero em ligas de magnésio
- Processamento e caracterização de novas ligas à base de Nb-Ti para aplicações em turbinas aeronáuticas
- Métodos eletroquímicos para monitorar a corrosão de superfícies tratadas
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