ABSTRACT

Low degradation rate is one of the main problems in iron-based alloys as potential biodegradable materials. In this study, Fe-30Mn-1 C-x(x = 0, 0.5, 1, 1.5)Cu alloys were designed to study the determining impact of copper addition and associated ageing treatment on the biodegradation behaviour of Fe-30Mn-1 C alloy system, in combination with the mechanical behaviour of the designed biomaterial system. Based on electrochemical measurements and immersion tests, it was observed that the degradation rate of materials was increased on increasing the copper content and ageing treatment because of the decreased potential and galvanic corrosion induced by precipitates. While the elongation and strength of the alloy decreased because of the precipitation within the grains, they were within the acceptable range.

摘要

低降解率是铁基合金作为潜在的可生物降解材料的主要问题之一。在这项研究中，设计了 Fe-30Mn-1 Cx(x = 0, 0.5, 1, 1.5)Cu 合金，以研究铜添加和相关时效处理对 Fe-30Mn-1 C 合金体系生物降解行为的决定性影响。 ，结合设计的生物材料系统的机械行为。基于电化学测量和浸没试验，观察到材料的降解速率随着铜含量的增加和时效处理的增加而增加，这是因为沉淀物引起的电位降低和电偶腐蚀。虽然合金的伸长率和强度由于晶粒内的析出而降低，但它们在可接受的范围内。