利用机械合金化-放电等离子烧结的方法制备了不同球磨时间Zn质量分数为15%的新型可生物降解Fe-Zn合金。利用XRD、SEM、EDS分析了合金的微观组织及成分;利用动电位极化曲线、浸泡失重曲线评价了Fe-Zn合金的生物降解性能。结果显示所制备Fe-Zn合金由Fe-Zn固溶体基体及少量细小ZnO相颗粒组成,合金降解性能优于纯铁。
In this paper,a new biodegradable Fe-Zn alloy containing 15wt% of zinc was prepared by mechanical alloying-spark plasma sintering with different ball-milling time.The microstructure and composition of the Fe-Zn alloy were investigated by XRD,SEM and EDS.The biodegradation property was evaluated by potentiodynamic polarization and weight loss testing under static immersion.The Fe-Zn alloy was found to be composed of Fe-Zn solid solution and a small quantity of ZnO particles and has better degradation property than pure Iron.