Synthesis of novel Ti-alloy hydrides with high hydrogen content

高氢含量新型钛合金氢化物的合成

• 批准号: 24760586
• 负责人: ENDO Naruki
• 金额: $ 2.83万
• 依托单位: Japan Atomic Energy Agency
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2012
• 资助国家: 日本
• 起止时间: 2012-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-24760586/
• 关键词: 水素貯蔵材料; 高圧合成; 放射光; その場観察; TiFe; BCC; 規則－不規則変態; 水素吸蔵合金; 高温高圧; 放射光その場観察; 高圧

We investigated the hydrogenation of a CsCl-type TiFe alloy at 5 GPa and 873 K by in situ synchrotron radiation X-ray diffraction measurements. After formation of a solid solution of hydrogen in TiFe, an order-disorder phase transition in the metal lattice of TiFe occurred, which yielded a BCC TiFe hydride. The unit cell volume of the BCC hydride increased by 21.0% after the hydrogenation reaction. The volume expansion was larger than that of a gamma hydride TiFeH_x (x = 1.9) prepared by hydrogenation near ambient conditions.In order to estimate the hydrogen content of BCC hydride, we compared its lattice volume with the lattice volume of the gamma hydride at same high pressure and high temperature conditions. As a result, the lattice volume of BCC phase was almost equal to that of the gammma hydride, therefore, the hydrogen content of BCC hydride was almost equal to the gamma hydride.

我们研究了CsCl型TiFe合金在5 GPa和873 K下的氢化反应。氢在TiFe中形成固溶体后，TiFe金属晶格发生有序-无序相变，生成体心立方TiFe氢化物。体心立方氢化物的晶胞体积在氢化反应后增加了21.0%。为了估算体心立方结构氢化物的氢含量，我们比较了体心立方结构氢化物和γ氢化物在相同的高温高压条件下的晶格体积。结果表明，BCC相的晶格体积与γ氢化物的晶格体积几乎相等，因此，BCC氢化物的氢含量与γ氢化物的氢含量几乎相等。

项目成果

Formation of BCC TiFe hydride under high hydrogen pressure

• DOI: 10.1016/j.ijhydene.2013.03.120
• 发表时间: 2013-05
• 期刊: International Journal of Hydrogen Energy
• 影响因子: 7.2
• 作者: Naruki Endo;H. Saitoh;A. Machida;Y. Katayama

EXCELLENT POSTER AWARD, MH2012 International Symposium on Metal-Hydrogen systems–Fundamentals and Applications–, 21-26 Oct., 2012, Kyoto, Japan

优秀海报奖，MH2012 国际金属氢系统研讨会 – 基础与应用 –，2012 年 10 月 21-26 日，日本京都

CsCl型Ti合金の高温高圧水素化反応

CsCl型钛合金高温高压加氢反应

• 发表时间: 2013
• 作者: Masatoshi Mitsuhara;Masaki Miake;Shigeto Yamasaki;Satoshi Hata;Hideharu Nakashima;Ninoru Nishida;Jun-ichi Kusumoto;Akihiro Kanaya;林泰輔,森戸茂一,大庭卓也;遠藤成輝
• 通讯作者: 遠藤成輝

高温高圧BCC相TiFe合金水素化物の水素吸蔵量の評価

高温高压BCC相TiFe合金氢化物储氢能力评价

• 发表时间: 2013
• 作者: M. Mitsuhara;M. Miake;S. Yamasaki;H. Nakashima;N. Nishida;J. Kusumoto;A. Kanaya;林泰輔,森戸茂一,大庭卓也;遠藤成輝
• 通讯作者: 遠藤成輝

Determination of a phase diagram of TiH_2 at high pressures and high temperatures for development of novel Ti-based hydrides

高压高温下TiH_2相图的测定用于新型钛基氢化物的开发

• 发表时间: 2012
• 作者: N. Endo;H. Saitoh;A. Machida;Y. Katayama;K. Aoki
• 通讯作者: K. Aoki