EFFECT OF ANODIC OXIDATION ON THE CORROSION BEHAVIOR OF NICKEL-TITANIUM SHAPE MEMORY ALLOYS IN SIMULATED BODY FLUIDS (SBF)
Publish Year: 1394
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_IJMSEI-12-2_010
تاریخ نمایه سازی: 26 مرداد 1402
Abstract:
The effect of anodic oxidation of a NiTi shape memory alloy in sulfuric acid electrolyte on its surface
characteristics was studied. Surface roughness was measured by roughness tester. Surface morphology was studied
using optical microscopy (OM) and scanning electron microscopy (SEM). Corrosion behavior was specified by
recording Potentiodynamic polarization curves and measuring the content of Ni ions, released into a SBF solution
using atomic absorption spectroscopy (AAS). Fourier transformation infrared radiation (FT-IR) and energy dispersive
spectroscopy were employed to verify the biocompatibility of the anodized and bare alloys after submersion in SBF. It
was shown that anodic oxidation in sulfuric acid significantly increases corrosion resistance and biocompatibility. This
layer improves corrosion resistance and Ni ion-release resistance by impeding the direct contact of the alloy with the
corrosion mediums i.e. Ringer and SBF solutions. The TiO۲ oxide layer also decreases the releasing of Ni ions in to
SBF solution
Keywords:
Authors
S. Noori
Research Center for Advanced Materials and Mineral Processing, Faculty of Materials Engineering, Sahand, Univerity of Technology, Tabriz, Iran.
J. Khalil-Allafi
Research Center for Advanced Materials and Mineral Processing, Faculty of Materials Engineering, Sahand, Univerity of Technology, Tabriz, Iran.
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