| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials for Sustainable Hydrogen Energy
|
| Presentation Title |
Attempt to synthesize aluminum hydride using hydrogen plasma |
| Author(s) |
Goroh Itoh, Hiroto Yuda, Naoyuki Sato, Shigeru Kuramoto, Junya Kobayashi |
| On-Site Speaker (Planned) |
Goroh Itoh |
| Abstract Scope |
Metal hydrides have attracted attention as hydrogen storage materials, among which aluminum hydride has extremely high hydrogen densities in terms of both mass and volume and also has practically favorable hydrogen release temperature. However, currently, hydrogen gas atmosphere at high temperature and high pressure of 9GPa is required for aluminum hydride formation. To overcome this high barrier, we have been attempting to synthesize aluminum hydrides by irradiating hydrogen plasma onto aluminum substrates since plasma has a potential to generate non-equilibrium reactions at relatively low temperatures and pressures. Several aluminum-base substrates, 99.99%Al, A1070, Al-5mass%Ti and Al-5mass%Mg, were irradiated using plasma generator based on the electron cyclotron resonance in a low-pressure hydrogen gas atmosphere. Transmission electron microscopy revealed second-phase particles that cannot be interpreted with any reported structure, while X-ray diffraction showed that hydrogen atoms are present in a super-saturated solution at interstitial sites of the matrix. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Process Technology, Sustainability, |