Development of novel hydrogen absorption alloys and analysis of hydrogenation behavior by hydrogen micro-imaging system

新型吸氢合金的研制及氢显微成像系统分析加氢行为

• 批准号: 15360360
• 负责人: SAITOH Hideyuki
• 金额: $ 8万
• 依托单位: Muroran Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15360360/
• 关键词: hydrogen absorption alloy; radioluminography; imaging plate; visualization of hydrogen distribution; hydrogenation property; magnesium alloy; titamium alloy; マグネシウム; ニッケル; チタン; クロム; トリチウム; ラジオルミノグラフ法

The purposes of the research were to investigate and improve the hydrogenation property of hydrogen absorption alloys by analyzing the hydrogen behavior in them using hydrogen micro-imaging system.For the Ti-Cr specimen with two-phase structure of BCC phase and TiCr2 Laves phase, hydrogen distribution is observed by tritium radioluminography and silver decoration method. The hydrogen diffusion coefficients at room temperature have been successfully determined by analyzing the tritium depth in the specimens. This result shows that the hydrogen diffusion in the Laves phase is slower than that in the BCC phase. The developed Ti-Cr alloy showed 3.5 mass% of hydrogen capacity at room temperature.For the Mg-Ni eutectic alloy specimen with two-phase structure of Mg phase and Mg2Ni phase, the relation between hydrogenation property and eutectic structure is examined by the PCT measurement. The specimen showed the hydrogen capacity of 6.3 mass% at 400℃. The hydrogenation behavior depends on the morphology of the eutectic structure, that is, the coarsening of the eutectic structure causes the acceleration of hydrogenation kinetics. Nickel coating by hybridization treatment is found to improve the hydrogenation kinetics drastically for both the pure Mg and Mg-Ni eutectic alloy.

为了研究和改善吸氢合金的吸氢性能，采用氢显微成像系统对具有BCC相和TiCr 2 Laves相两相结构的Ti-Cr合金试样进行氢显微成像，并结合银装饰法观察氢的分布。通过分析氚在试样中的深度，成功地测定了室温下氢的扩散系数。该结果表明，Laves相中的氢扩散比BCC相中的氢扩散慢。对于具有Mg相和Mg 2Ni相两相结构的Mg-Ni共晶合金试样，通过PCT测试研究了共晶组织与合金储氢性能的关系。该试样在400℃下显示出6.3质量%的氢容量。加氢行为取决于共晶组织的形态，即共晶组织的粗化导致加氢动力学的加速。结果表明，无论是纯镁还是Mg-Ni共晶合金，经杂化处理后的镍涂层都能显著提高合金的加氢动力学。

项目成果

Hydrogen diffusion in Ti-Cr hydrogen absorption alloys by tritium radioluminography

通过氚放射发光技术研究 Ti-Cr 吸氢合金中的氢扩散

• 发表时间: 2005
• 期刊: Materials Science Forum 475-479巻
• 作者: H.Saitoh;小湊幸生;H.Saitoh
• 通讯作者: H.Saitoh

Hydrogenation Property and Eutectic Structure of a Mg-Mg2Ni Two-Phase Alloy

• DOI: 10.2320/jinstmet.69.810
• 发表时间: 2005
• 期刊: Journal of The Japan Institute of Metals
• 作者: K. Kominato;H. Homma;H. Saitoh

Application of tritium radioluminography to the detection of hydrogen diffusion in Ti-Cr alloy

氚放射发光技术在Ti-Cr合金氢扩散检测中的应用

• 发表时间: 2005
• 期刊: J. Phase Equilibria and Diffusion 26巻
• 作者: H.Saitoh

Mg-Mg_2Ni二相合金の共晶組織と水素化特性

Mg-Mg_2Ni双相合金的共晶组织及加氢性能

• 发表时间: 2005
• 期刊: 日本金属学会誌 69巻9号
• 作者: H.Saitoh;小湊幸生
• 通讯作者: 小湊幸生

Application of tritium radioluminography to the detection of hydrogen diffusion in Ti-Cr-alloy

氚放射发光技术在钛铬合金氢扩散检测中的应用

• 发表时间: 2005
• 期刊: J.Phase Equilibria and Diffusion Vol.26
• 作者: H.Saitoh;小湊幸生;H.Saitoh;H.Saitoh
• 通讯作者: H.Saitoh