抄録
High-pressure hydrogenation behaviors of pure metals have not been investigated exten-sively, although intense research of hydrogenation reactions under high pressure has been conducted to find novel functional hydrides. The former provides us with valuable information for the high-pressure synthesis of novel functional hydrides. A pressure–temperature phase diagram of the Ta–H system has been determined using the in situ synchrotron radiation X-ray diffraction technique below 9 GPa and 600◦ C in this study. At room temperature, the phase boundary obtained between distorted bcc TaH~1 and hcp TaH~2 was consistent with the previously reported transition pressure. The experimentally obtained Clapeyron slope can be explained via the entropy change caused by hydrogen evolution from TaH~2.
本文言語 | English |
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論文番号 | 6719 |
ジャーナル | Applied Sciences (Switzerland) |
巻 | 11 |
号 | 15 |
DOI | |
出版ステータス | Published - 2021 8月 1 |
ASJC Scopus subject areas
- 材料科学(全般)
- 器械工学
- 工学(全般)
- プロセス化学およびプロセス工学
- コンピュータ サイエンスの応用
- 流体および伝熱