Surface improvement of AZ31 magnesium alloy for engineering applications

مهندسی متالورژی و مواد

Article 10, Volume 34, Issue 4 - Serial Number 32, December 2023, Pages 45-58   

Document Type: Original Article

DOI: 10.22067/jmme.2023.79359.1083

Author

Farzad Soleymani^*

Faculty member of Payam Noor University. Tehran - Iran.

Abstract

The main purpose of the present study is to apply micro-spark oxidation coating on AZ31 alloy to improve corrosion resistance, bioactivity and biocompatibility of this alloy. The results of the electrochemical impedance test show the improved corrosion resistance of the AZ31 alloy. X-ray diffraction (XRD), transmission electron microscopy (TEM), infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and elemental analysis by X-ray energy (EDS) tests were used to examine the samples. Body simulation fluid (SBF) test was used to evaluate the ability to form apatite on the samples. The results show that the formation of an apatite layer on the surface of the samples can be considered as a measure of bioactivity. Be the right choice for bone implants In the 19th century, at the same time as the Industrial Revolution, the use of metals as implants in the body was developed. The first use of metal implants in the body to repair broken bones was reported. Metal implants are widely used in orthopedic surgery in both temporary and permanent forms. Today, metals have wider applications in orthopedic and dental surgeries. Only a small number of them are biocompatible and are used as implants. Among these magnesium metals and their alloys due to their close properties to bone, release of magnesium ions into bone and its biodegradability. In the simulated body environment, it has been widely considered as temporary implants in medical and orthopedic applications.

Keywords

Anodized; Coating; Mg alloy. Temporary; bone

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