About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Magnesium Technology 2026
|
| Presentation Title |
Investigation of the Surface Chemistry of Mg and Mg Alloy Powders |
| Author(s) |
Steven C. Johnson, Anita Ghodsi |
| On-Site Speaker (Planned) |
Steven C. Johnson |
| Abstract Scope |
Magnesium (Mg) and Mg alloy powders are generally difficult to sinter at atmospheric pressure in inert atmosphere purportedly due to the presence of powder particle surface oxide layers. To better understand sintering of Mg and Mg alloy powders, X-ray Photoelectron Spectroscopy and Temperature Programmed Desorption were performed to characterize the surface chemistry and adsorbed surface hydrocarbon species on gas atomized powders of pure Mg and Mg alloys AZ91D and WE43. These results are used to quantitatively determine the surface chemistry, surface chemistry as a function of depth, desorbing species, and surface desorption kinetics of these powders. Additionally, equilibrium thermodynamic modeling of these Mg/Mg alloys exposed to part per million quantities of oxygen are presented for comparison to experimental results. These results and the analysis of these results are intended to improve sintering of Mg and Mg alloy powder materials through more quantitative knowledge of powder surface chemistry. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Magnesium, Powder Materials, Other |