New Alloy Materials Enable Stronger, More Ductile and Corrosion-Resistant Orthopedic Implants
UCF researchers have developed CoCrFeNi-based alloy compositions for creating biomedical implant materials with improved corrosion resistance, strength and ductility. The UCF compositions are the first MPEAs tested in vitro to be both non-cytotoxic and able to support fibroblast cell growth in contact with the alloys. This opens the door to designing compositions that more closely mimic bone properties than the biomedical alloys that are currently available.
The UCF invention constitutes compositions of CoCrFeNi-based MPEAs, also known as high entropy alloys (HEAs), for example: Co20Cr20Fe20Ni20Mn20, Co20Cr20Fe30Ni30 and Co30Cr30Fe20Ni20.
- Enhanced strength and increased corrosion resistance
- Reduced risk of metallosis, mechanical failure and stress shielding
- Orthopedic implant components
- Orthopedic implant coatings
- Vascular stent implants