Project Title: Hard X-ray spectroscopy characterization of biocorrosion of additively manufactured Mg alloy WE43
|Coordinator||SWERIM AB - Materialutveckling|
|Funding from Vinnova||SEK 499 000|
|Project duration||November 2020 - April 2022|
|Venture||Research infrastructure - utilisation and collaboration|
|Call||Industrial pilot projects for utilisation of large-scale infrastructures for neutron and photon based techniques – 2020|
Purpose and goal
The aim of the project is to establish new routines for characterization of biological corrosion mechanisms for Mg alloys processed by Powder Bed Fusion - Laser Beam (L-PBF). The purpose for OssDsign, a MedTech company at the forefront of material development for improved bone healing, together with Swerim AB, is to broaden the implementation of synchrotron-based techniques in the development of biodegradable implants in general, and to study evolution of the surface of Mg alloys in biological environments using X-ray photoelectron spectroscopy (HAXPES) in particular.
Expected results and effects
The results will both contribute to the development of biodegradable implants of Mg alloys made with PBF-LB, and create an opportunity for OssDsign to plan future synchrotron measurements of both Mg alloys and other materials for biomedical applications, both ex-situ and in- situ. Furthermore, the results will be shared within the AddLife competence center so that the lessons learned from this project can be used by all parties within the AddLife consortium.
Planned approach and implementation
Preparatory corrosion studies in the form of electrochemical characterization and immersion studies are under way at Swerim AB. The synchrotron measurements will be performed on beamline P22 at Petra III,Hamburg, in 2021. The measurements will be made on additive manufactured samples of magnesium alloy WE43 to investigate the development of the surface composition during corrosion in a phosphate buffered saline solution, and the development of lateral distribution of alloying elements. oxides, hydroxides, and other corrosion products during the first two hours of immersion