Members

IMMC

Aude Thomas
PhD student
e.g.: Ir. at UCL in 2015
Contact

Main project: Definition, processing and optimization of new Fe-based alloys for biodegradable stents
Funding: FRIA
Supervisor(s): Pascal Jacques

Nowadays, cardiovascular diseases, such as atherosclerosis are very common. A possible solution to deal with that kind of disease is the implantation of a stent. Unfortunately, long-term complications such as thrombosis or restenosis can happen. So, a new solution would be biodegradable stents. These would ensure the mechanical support when required and then, disappear when the artery is healed. Materials for biodegradable stents should possess a very interesting combination of properties : a mechanical behaviour adapted to physiolgical stresses, a suitable biocorrosion rate and biocompatibility. My goal is to develop iron-based alloys with this combination of properties. This research raises different scientific questions, such as « what is the link between composition, microstructure and the multifunctional profile (mechanical behavior and biocorrosion)? ».

In my research, I investigate existing TWIP steels and also new alloys. To investigate quickly a new system, I work with a diffusion multiplet. This enables to investigate a lot of different compositions in one sample, which gives a first idea of the studied system. The mechanical properties are evaluated via tensile tests for example, while corrosion properties are analyzed via potentiodynamic tests and immersion tests. Microstructure and phases are also very important and can be revealed thanks to SEM or EBSD for example.



IMMC main research direction(s):
Biomedical engineering
Processing and characterisation of materials

Keywords:
medical device
metallic alloys
metallurgy

Research group(s): IMAP

    

Recent publications

See complete list of publications

Conference Papers


1. Thomas, Aude; Scarcello, Eleonora; Lison, Dominique; Jacques, Pascal. Iron-based biodegradable alloys: importance of the testing parameters for corrosion evaluation via immersion tests.. http://hdl.handle.net/2078.1/214213

2. Thomas, Aude; Reuter, Sarah; Scarcello, Eleonora; D'Haese, Cécile; Nysten, Bernard; Lison, Dominique; Jacques, Pascal. Iron-based biodegradable alloys: effect of composition and experimental parameters on the corrosion rate. http://hdl.handle.net/2078.1/196108

3. Thomas, Aude; Scarcello, Eleonora; Lison, Dominique; Jacques, Pascal. Iron-based biodegradable alloys: importance of the testing parameters for corrosion evaluation via immersion tests. http://hdl.handle.net/2078.1/196109

4. Thomas, Aude; Scarcello, Eleonora; Lison, Dominique; Jacques, Pascal. Iron-based biodegradable alloys: importance of the testing parameters for corrosion evaluation via immersion tests. http://hdl.handle.net/2078.1/196110