Effect of surface treatment on the bioactivity and electrochemical behavior of magnesium alloys in simulated body fluid
Yükleniyor...
Dosyalar
Tarih
2017
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Wiley-V C H Verlag Gmbh
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The effect of surface treatment using NaOH or H2O2 on the bioactivity and corrosion behavior of AZX310, AZ91D, AM50, and AZ31 Mg alloys in simulated body fluid (SBF) has been studied with the aid of surface morphological assessment, in vitro characterization, and electrochemical measurements. The influence of immersion time on the behavior of the treated alloys in SBF was also investigated. X-ray diffraction (XRD) and scanning electron microscopy (SEM) analyses confirmed successful surface modification upon treatment of alloy surface with NaOH and H2O2. XRD and SEM analyses also revealed that surface modification enhances formation and growth of hydroxyapatite (HA). Formation of HA layer on the alloy surface was further confirmed by Fourier transform infrared spectroscopy analysis. In vitro immersion test reveals that pH of SBF solution containing treated alloys is lower than that containing untreated alloy. However, pH increases with immersion time. Results from weight loss and electrochemical measurements indicate that treated alloys possess higher corrosion resistance in SBF than the untreated ones. H2O2 treated alloys demonstrated greater corrosion resistance in SBF than NaOH treated alloys.
Açıklama
Solomon, Moses/0000-0002-3251-8846; Olasunkanmi, Lukman O./0000-0002-6295-2950; Ebenso, Eno E./0000-0002-0411-9258
WOS: 000404883500009
WOS: 000404883500009
Anahtar Kelimeler
electrochemistry, magnesium alloys, surface treatment
Kaynak
Materials And Corrosion-Werkstoffe Und Korrosion
WoS Q Değeri
Q2
Scopus Q Değeri
Q2
Cilt
68
Sayı
7
