About this Abstract |
Meeting |
MS&T21: Materials Science & Technology
|
Symposium
|
Next Generation Biomaterials
|
Presentation Title |
Corrosion Assessment of Rare Earth Elements and Magnesium-based Nanocomposites for Bio-implant Applications |
Author(s) |
Moataz Abdalla, Austin Sims, Meysam Haghshenas, Manoj Gupta, Hamdy Ibrahim |
On-Site Speaker (Planned) |
Hamdy Ibrahim |
Abstract Scope |
Magnesium alloys have been the focus of bio-implant research due to their preferable properties such as biocompatibility and low relative density. However, they show insufficient strength and fast degradation rates. Magnesium nanocomposites on the other hand offer a promising alternative to magnesium alloys owing to their higher strength, ductility, and corrosion resistance. In this work, the effect of adding different types of rare-earth oxide nanoparticles on the corrosion characteristics of magnesium-based nanocomposites has been studied for the first time. A combination of powder metallurgy, hybrid microwave sintering, and hot extrusion manufacturing processes were used to produce the nanocomposite parts. The electrochemical and immersion corrosion test results show that the addition of the rare-earth oxide nanoparticles, especially the samarium oxide (Sm2O3) nanoparticles results in improved corrosion behavior of the Mg-based nanocomposites, by reducing the corrosion rates, in addition to a significant enhancement in the mechanical and creep properties. |