About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Corrosion, Protection and Damage Monitoring of Advanced Materials in Natural and Specific Environments
|
| Presentation Title |
Localized hydrogen irradiation of metals produced by focused ion beam - scanning electron microscope |
| Author(s) |
Chad Rue, Hugues Francois-Saint-Cyr, Roger Maddalena |
| On-Site Speaker (Planned) |
Roger Maddalena |
| Abstract Scope |
Hydrogen embrittlement research has increased in recent years due to interest in high temperature performance and materials related to the hydrogen economy. Bulk hydrogen testing may be performed by high pressure or electrochemical charging with analysis by thermal desorption spectroscopy. On the micro- or nanoscale, analysis of hydrogen is largely limited to atom probe tomography or ToF-SIMS in a focused ion beam. Instead of measuring the hydrogen content trapped at a microstructural feature, our aim is to locally implant hydrogen on a selected region or feature and observe the response. We have irradiated titanium, zirconium, aluminum, nickel superalloy and steels with a developmental hydrogen plasma focused ion beam. Some materials form hydrides, while others may blister or absorb the hydrogen. Micro-inclusions may reveal chemical interactions with hydrogen and become deformed. Results from electron microscopy in-situ testing will be discussed. |