Development and characterization of biodegradable FeMnAg-materials used for the SLM-process

该研究项目的目的是开发和表征生物可吸收的femnag合金及其增材制造资格，特别是在选择性激光熔化方面。合作方法包括开发、生产和表征由传统不混相合金制成的结构，这些合金具有很强的不同熔点，如FeAg。由于可吸收植入物在生物医学工程中的潜在应用，除了稳定生产外，与纯铁合金相比，这些结构的生物相容性和较低的降解率特别令人感兴趣。这些新的和创新的合金提出了新的挑战，在选择性激光熔化的过程管理和后处理的组件。除了微观组织性能外，还必须调整合金伴体的分布，包括尺寸、组织和形状，以控制降解率。由于植入物在降解过程中释放到组织中的颗粒会被吞噬，因此它们必须由一种改性的、生物相容的、不耐腐蚀的贵金属合金组成，这种合金仍有待开发。合金元素，特别是锰，与贵金属的相互作用必须加以解决。由于其抗菌作用，研究将以银作为主要合金元素开始。

The aim of the research project is to develop and characterize bioresorbable FeMnAg-alloys and their additive manufacturing qualification, specifically in selective laser melting. The cooperative approach includes the development, production and characterization of additively manufactured structures made of conventionally immiscible alloys with strongly different melting points such as FeAg. Because of the potential application of resorbable implants in biomedical engineering, the biocompatibility and lower degradation rates of these structures compared to pure iron alloys are of particular interest aside from consistent production.These new and innovative alloys present novel challenges to process management in selective laser melting and in the post-processing of the components. In addition to the microstructural properties, the distribution, including size, structure and shape of the alloying partner, must be adjusted to control degradation rates. Since particles released into the tissue during the implant’s degradation will be phagocytized, they must consist of a modified, biocompatible, non-corrosion-resistant noble metal alloy which still needs to be developed. The interaction of the alloying elements, specifically manganese, with the noble metal must be addressed. Due to its antibacterial effect, investigations will begin with silver as the main alloying element.