Topic: Advanced Bio-Active Coatings of Titanium and Magnesium Alloys for Biomedical Applications

Speaker: Prof. Amir Eliezer
Corrosion Research Center, Nano-Bio & Advanced Materials, Sami Shamoon College of Engineering, Israel

Time: 10:30-12:00 AM., (Mon.) Jan. 20, 2014
Venue: Lecture Hall, South Campus, IMR CAS.

Abstract:
Over the past few years, progresses in orthopedic surgery have helped to improve the quality of life. Approximately 4.5 million procedures related to joint replacement and fracture repair are performed worldwide each year. However, serious complications still occur mostly due to implant loosening or infection. Surface treatments and coatings have been major research axes to address those problems. In this study, the development of a titanium medical grade Ti-6Al-4V alloy bio-active oxide coating containing silver particles and the development of a CaP bio-active oxide coating is reported. Both materials coatings were obtained by Plasma Electrolytic Oxidation ( PEO). Corrosion of magnesium W4 alloy was investigated in vitro by electrochemical methods in solutions replicating the body's environment. In addition also gas formation of W4 was also quantified. In order to correlate in-vitro corrosion to in-vivo degradation a pilot animal study in sheep was performed. A dedicated approach to identify and construct suitable traumatological implants made of magnesium as well as was undertaken and a suitable manufacturing process on an industrial scale was established. The results lead to the conclusion that in order to effectively tailor and control the biodegradation of titanium and magnesium implants, PEO coatings is a very promising method.

Welcome to attend!