TY - JOUR ID - 72326 TI - Electrodeposition of Nano Hydroxyapatite Coating on Biodegradable Mg-Zn Scaffold (TECHNICAL NOTE) JO - International Journal of Engineering JA - IJE LA - en SN - 1025-2495 AU - seyedraoufi, zahra sadat AD - School of Materials and Metallurgy, Iran University of Science and Technology (IUST) Y1 - 2014 PY - 2014 VL - 27 IS - 6 SP - 939 EP - 944 KW - Biodegradable Mg–Zn scaffold KW - Hydroxyapatite coating KW - Electrodeposition KW - alkali treatment KW - Corrosion Resistance DO - N2 - Magnesium has been recently recognized as a biodegradation metal for bone substitute application. In the present work, porous magnesium-zinc scaffolds were prepared by powder metallurgical process and nano hydroxyapatite (HAP) coating on the Mg-3Zn (wt.%) scaffold was prepared by pulse electrodeposition and alkali treatment processes to improve the corrosion resistance of scaffold. The results indicated the as-deposited coating consists of HAP, DCPD and OCP with needle-like and plate-like structures and the post-treated coating was composed of needle-like particles of nano HAP that developed almost perpendicularly to the substrate. Electrochemical tests showed that the corrosion potential of scaffold significantly increased from –1.475 to –1.365 V and the corrosion current density reduced 1.5-fold in comparison to the scaffold modified by nano hydroxyapatite coating. UR - https://www.ije.ir/article_72326.html L1 - https://www.ije.ir/article_72326_ad3e16bc5983bfede24b5cf154456ef2.pdf ER -