Abstract—In this years, many researches on the biodegradable behavior of Mg and its alloys has been done. Low corrosion resistance of the magnesium alloys has led to search a new generation of magnesium alloys for better strength, ductility, and high corrosion resistance. In this study, Mg-5Zn-1Y-1Ca alloy was fabricated by melting process and hot extrusion (at 300, 330 and 370 °C). The effect of temperature of extrusion on microstructure and degradation behavior of Mg-5Zn-1Y-1Ca alloy were investigated by optical microscopy, scanning electron microscopy with an energy dispersive X-ray spectroscopy, X-ray diffraction, immersion test and electrochemical test. The results showed that Mg-Zn-Y-Ca alloy was composed of α-Mg, Mg
3YZn
6 phase and Ca
2Mg
6Zn
3 particles. Immersion and electrochemical tests showed that extruded Mg-5Zn-1Y-1Ca alloy at 330 °C exhibited the best degradation resistance from other alloys in this study.
Index Terms—Magnesium alloys, extrusion, microstructure, biodegradable, degradation.
The authors are with Shahid Rajaee Teacher Training University (SRTTU), Tehran, 16785-136 Iran (e-mail: hjafari@srttu.edu, fereshteh_dm91@yahoo.com).
[PDF]
Cite: H. Jafari and F. Doost Mohammadi, "Effect of Extrusion Temperature on Microstructure and Biodegradation Behavior of Mg-5Zn-1Y-1Ca Alloy," International Journal of Chemical Engineering and Applications vol. 8, no. 4, pp. 299-304, 2017.
