Parallel usage of x-ray diffraction contrast tomography and micro-computed tomography for multi-modal characterization at the HEMS P07 beamline

The combined application of x-ray diffraction contrast tomography and micro-computed tomography provides valuable and comprehensive insights, allowing for an in-depth understanding of phase composition and microstructure of materials. In this paper, we outline the current state of this methodology at the EH4 station of the P07 beamline, operated by Hereon, and present two practical applications within the field of metallic biomaterials for the development of new implant materials, inspiring further research and innovation in this area. Using magnesium alloys as implant materials offers several advantages, because they hold potential for temporary implants that naturally degrade within the body. These implants gradually dissolve over time, thereby promoting bone healing. Research in this area not only requires an understanding of the structural and phase changes in magnesium implants but also necessitates an investigation of the surrounding bone tissue structure. Although magnesium implant materials and bone tissue belong to different material classes, the combination of x-ray diffraction contrast tomography and micro-computed tomography enables detailed analysis of their microstructure and phase composition. As a result, we can extract information on porosity, phase composition, and crystal parameters around hybrid magnesium-titanium implants and obtain detailed information on the ultrastructure of bone tissue in a non-destructive manner.