| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing: Advanced Characterization for Industrial Applications
|
| Presentation Title |
Moisture Impacts in AM Metal Powders Characterized by Karl Fischer Oven Titration and Avalanche Rheometry |
| Author(s) |
Dave van der Wiel, Ethan Pawlak, Tyler Gutzky |
| On-Site Speaker (Planned) |
Dave van der Wiel |
| Abstract Scope |
Metal powders exhibit native oxide surface films which readily interact with ambient moisture to varying degrees. A series of typical metal powders used in AM powder bed fusion processes were exposed to various environmental conditions in order to control their moisture content. The bulk flow properties of the powders were then characterized using a drum-style avalanche powder flow analyzer. Precision moisture content was measured using oven desorption/evaporation coupled with Karl Fischer coulometric titration. The results of this study have implications on powder handling, recycling and AM process control. |