2026-04-13T04:48:59Zhttps://recercat.cat/oai/request

oai:recercat.cat:2117/3990802025-07-24T18:00:28Zcom_2072_1033col_2072_452951

Mechanical and corrosion properties of a magnesium material Escolà Olivé, Aina Universitat Politècnica de Catalunya. Departament d'Enginyeria de Sistemes, Automàtica i Informàtica Industrial Ostbayerische Technische Hochschule Regensburg Hornberger Àrees temàtiques de la UPC::Enginyeria dels materials Magnesium alloys Materials -- Mechanical properties Magnesi -- Aliatges Materials -- Propietats mecàniques Magnesium and its alloys have been investigated as materials for biomedical applications for several years. It can be explained by magnesium’s unique combination of their appropriate mechanical properties and their good biocompatibility. The main advantage of magnesium over other used metals is its ability to biodegrade, it can be dissolved in physiological environment and be used as a biodegradable material. The main limitation is its high corrosion rates and inhomogeneous corrosion. Mechanical and corrosion properties are determined by the material composition, depending on appropriate alloying, such as the use of rare earth elements, as well as surface treatments. In this thesis, the mechanical and corrosion properties of a cast magnesium alloy WE43 for biomedical application are being studied in comparison to AM50 as a reference material. The aim is to apply an appropriate vibratory grinding treatment and to characterize the surfaces after the treatment. After the vibratory grinding treatment, the samples were examined using a confocal laser microscope to analyse the morphology and roughness of the treated surfaces. Following that, tensile and microhardness tests were performed to probe the mechanical properties, electrochemical corrosion studies to determine the corrosion properties, and an optical microscope was used to study the microstructure on cross-sections. Results show that the applied surface treatment improved the surface roughness. An enhancement in the mechanical properties related to their elastic behaviour was found in the samples. After the vibratory grinding treatment, a black layer appeared on the materials, the reason for this is unknown. Giving an answer to this issue may lead to an improvement in vibratory grinding treatment, and consequently an improvement of mechanical and corrosion properties of the treated materials. Outgoing 2023-09-04 Bachelor thesis https://hdl.handle.net/2117/399080 PRISMA-179040 eng Open Access application/pdf Universitat Politècnica de Catalunya