Can temperatures as low as −196 °C improve the performance of biodegradable Mg implants?

Our latest research Magnesium Alloy Biomaterials: Innovative Engineering Solutions for Future Biodegradable Implant Materials published in JMR&T (Elsevier) explores exactly this how deep cryogenic treatment (DCT) influences the microstructure, corrosion behaviour, and mechanical properties of Mg-Gd alloys.

Magnesium-based alloys continue to attract significant attention as next-generation materials for temporary orthopaedic and cardiovascular implants due to their excellent biocompatibility, mechanical compatibility with bone, and complete biodegradability.

While alloy design and conventional heat treatments have been extensively studied, the impact of DCT on biodegradable Mg alloys remains largely unexplored.

In our latest study, we systematically investigated the effects of DCT (−196 °C for 8 h, 24 h, and 48 h) on Mg-Gd alloys containing 2, 5, and 10 wt.% Gd.

Using a combination of SEM, XRD, APT, Raman shift spectroscopy, residual stress analysis, electrochemical testing, and microhardness measurements, we evaluated the relationship between cryogenic processing, microstructural evolution, and performance.

Link to article: https://lnkd.in/e6sNC4RB

Key findings include:

✅ DCT induces composition-dependent microstructural modifications.

✅ Mg-5Gd exhibited an increase in hardness after treatment

✅ Corrosion behaviour changed in all investigated alloys following DCT, indicating altered electrochemical responses and passivation characteristics.

✅ Residual stress states and surface oxide formation were influenced by cryogenic processing.

These results suggest that DCT can serve as a promising supplementary processing route for tailoring the mechanical and corrosion performance of biodegradable Mg-Gd alloys, opening new opportunities for advanced biomedical implant materials.

Excited to contribute to the growing understanding of how cryogenic processing can be leveraged in the design of next-generation biodegradable metals.

The work was done in collaboration with our colleagues from Helmholtz-Zentrum Hereon.

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#MaterialsScience #Biomaterials #MagnesiumAlloys #BiomedicalEngineering #CryogenicTreatment #Corrosion #Microstructure #OrthopaedicImplants #CardiovascularImplants #SustainableMaterials #Research #Engineering

Latest research on biomedical CoCrMo alloys

Excited to share our latest research on biomedical CoCrMo alloys and the potential of deep cryogenic treatment (DCT) to improve implant performance published in @Corrosion Science (Elsevier). 🦴 🩻 🥼

Cobalt-chromium-molybdenum (CoCrMo) alloys are widely used in orthopaedic joint replacement implants because of their excellent mechanical strength and biocompatibility. However, challenges such as corrosion, wear, long-term durability, and metal ion release still remain critical concerns in biomedical applications.

💡 In this study, we investigated the influence of deep cryogenic treatment at −196 °C on biomedical-grade wrought low carbon CoCrMo alloy, comparing conventional heat treatment with DCT durations of 24 and 48 hours. Using SEM, XRD, Raman spectroscopy, corrosion testing, micro-residual stress analysis, and microhardness evaluation, we observed promising improvements in:

✔️ Corrosion resistance

✔️ Surface micro-residual stresses

✔️ Microhardness

The findings highlight the potential of DCT as an effective post-processing approach for enhancing the performance and reliability of CoCrMo biomedical implants. ⬅️

A great step forward toward more durable and reliable orthopaedic materials. ⚠️

You can read the full article here ⬇️

https://lnkd.in/eU58BfSA

I would also like to sincerely thank all co-authors or their valuable contributions, support, and teamwork throughout this research.

#Biomaterials #MaterialsScience #BiomedicalEngineering #Orthopaedics #CoCrMo #CryogenicTreatment #Corrosion #SurfaceEngineering #Research #Engineering

DLR meets Future technologies

What a fantastic day hosting colleagues Dr. Ronja Anton and Dr.-Ing. Gözde Alkan from German Aerospace Center (DLR)! 🚀

It was a pleasure to welcome such an inspiring duo and exchange ideas on innovation, research, and future collaboration opportunities. The discussions were insightful, engaging, and a great reminder of the value of strong partnerships across research institutes.

A big thank you to Matic Jovičević-Klug and Dennis Klapproth who contributed to making the visit so productive and enjoyable.

Looking forward to continuing the collaboration and turning ideas into impact. 👍 😊

#Collaboration #Innovation #Research #Networking #DLR