Biodegradable Behaviors of Mg-6%Zn-5%Hydroxyapatite Biomaterial

Abstract

The Mg-6%Zn-5%Hydroxyapatite (HA) biomaterial had been prepared through powder metallurgy method in this investigation. The mechanical properties and biodegradable behaviors of the Mg-Zn-HA composite in simulated body fluid were studied. The Mg-Zn-HA specimens obtained appropriate density, adjustable elastic modulus and compatible strength to natural bones. Immersion corrosion experiments revealed that 5wt% addition of HA in Mg-6%Zn alloy exhibited acceptable corrosion rates in simulated body fluid. The Mg matrix, Mg 7 Zn 3 phase and HA are identified in the experimental composite. The Mg(OH) 2 and Hydroxyapatite were found on the corrosion products in the simulated body fluid.