Surface Characterization of NiTi Superelastic and Shape Memory Alloys After Electrolytic Polishing

Natália Isabel de Azevedo Lopes; Laís Ávila de Oliveira Silva; Leandro de Arruda Santos; Vicente Tadeu Lopes Buono

Use este identificador para citar ou linkar para este item: http://hdl.handle.net/1843/57068

Tipo:	Artigo de Periódico
Título:	Surface Characterization of NiTi Superelastic and Shape Memory Alloys After Electrolytic Polishing
Autor(es):	Natália Isabel de Azevedo Lopes Laís Ávila de Oliveira Silva Leandro de Arruda Santos Vicente Tadeu Lopes Buono
Resumo:	For the biomedical application of NiTi alloys, an excellent surface finishing process is required to guarantee high corrosion resistance and biocompatibility, eliminating the allergenic and toxic effects associated with the release of nickel ions in the body. Electropolishing is a process that can reduce surface imperfections and form a thin protective layer of TiO2, even in complex-shaped devices. The main objective of our study was to find and report suitable parameters for electrolytic polishing of NiTi wires, in both the superelastic and shape memory states. The results indicate that electropolishing in a 3.5 mol•L-1 methanolic H2SO4 electrolyte at 20ºC can effectively reduce surface roughness, remove superficial nickel-rich layers and improve corrosion resistance for austenitic and martensitic NiTi alloys.
Assunto:	Elasticidade Efeito da memória de forma Solução eletrolítica Biomassa
Idioma:	eng
País:	Brasil
Editor:	Universidade Federal de Minas Gerais
Sigla da Instituição:	UFMG
Departamento:	ENG - DEPARTAMENTO DE ENGENHARIA METALÚRGICA ENGENHARIA - ESCOLA DE ENGENHARIA
Tipo de Acesso:	Acesso Aberto
Identificador DOI:	https://doi.org/10.1590/1980-5373-MR-2016-0933
URI:	http://hdl.handle.net/1843/57068
Data do documento:	2017
metadata.dc.url.externa:	https://www.scielo.br/j/mr/a/FkPQpcmXTg5vGVtDF5rVX7F/?lang=en
metadata.dc.relation.ispartof:	Materials Research
Aparece nas coleções:	Artigo de Periódico

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