Garamus, VasilVasilGaramusWieland, FlorianFlorianWielandMoosmann, Julian PhilippJulian PhilippMoosmannBeckmann, FelixFelixBeckmannLottermoser, LarsLarsLottermoserSerdechnova, MariaMariaSerdechnovaBlawert, CarstenCarstenBlawertFazel, MohammadMohammadFazelNidadavolu Eshwara Phani ShubhakarLimberg, WolfgangWolfgangLimbergEbel, ThomasThomasEbelWillumeit-Römer, RegineRegineWillumeit-RömerZeller-Plumhoff, BeritBeritZeller-Plumhoff2025-09-022025-09-022025-07-26Journal of Composites Science 9 (8): 396 (2025)https://hdl.handle.net/11420/57153Hybrid implants composed of magnesium and titanium are a promising direction in orthopaedics, as these implants combine the stability of titanium with the biological activity of magnesium. These partly soluble implants require careful investigation, as the degradation of magnesium releases hydrogen, which can enter the Ti matrix and thus alter the mechanical properties. To investigate this scenario and quantify the hydrogen uptake along with its structural impacts, we employed inert gas fusion, scanning electron microscopy, X-ray diffraction, and a combination of synchrotron absorption and X-ray diffraction tomography. These techniques enabled us to investigate the concentration and distribution of hydrogen and the formation of hydrides in the samples. Titanium hydride formation was observed in a region approximately 120 µm away from the titanium surface and correlates with the amount of absorbed hydrogen. We speculate that the degradation of magnesium at the magnesium/titanium implant interface leads to the penetration of hydrogen due to a combination of electrochemical and gaseous charging.en2504-477X20258Multidisciplinary Digital Publishing Institutehttps://creativecommons.org/licenses/by/4.0/Technology::617: Surgery, Regional Medicine, Dentistry, Ophthalmology, Otology, AudiologyTechnology::620: Engineering::620.1: Engineering Mechanics and Materials ScienceJournal Article2025-08-27https://doi.org/10.15480/882.1582010.3390/jcs908039610.15480/882.15820Journal Article