Vliv agresivity prostředí na korozní odolnost K-drátů z korozivzdorné oceli

Abstract

The aim of this bachelor's thesis is to study the corrosive properties of Kirschner wires. The theoretical part deals with the explanation of the concept of biomaterials, their division in terms of composition into non-metallic and metallic, with an emphasis on stainless steels. Another point of the theoretical part is introduction of the degradation processes of materials, namely corrosion and its types. The practical part is focused on studying the properties of steel 1.4441 in the form of Kirschner wires. A metallographic analysis of the material, hardness measurements and corrosion resistance assessments were performed in environments simulating the real use of these wires as part of external fixation elements of complicated fractures. The thesis additionaly involves investigating the corrosion resistance of Kirschner wires in two corrosion environments, namely NaCl and NaCl+KI. In both of these environments, the material appears very resistant to corrosion.