基于滤氢金属膜的氢气提纯是氢能源产业化应用的核心内容。目前工业应用的滤氢金属膜是极为昂贵的钯合金，亟待开发低成本、高性能的新型膜材料。本项目拟采用液态锤砧快速凝固技术制备V-Al-Fe(…)新型滤氢合金，深入考察不同凝固条件下组织形成规律及其多尺度结构特征，揭示多尺度结构与氢溶解、扩散和渗透等传输行为的内禀关系，阐明氢渗透过程氢与多尺度结构相互作用对氢脆、氢渗透稳定性和持久性的影响规律及机制，从而确立多尺度结构调控技术路线，全面优化合金氢传输性能。本项目既瞄准工业氢气提纯领域对低成本、高性能滤氢金属膜应用的迫切需求，亦可为我国开发具有自主知识产权的新型V基滤氢合金提供思路和理论基础。

The purification of hydrogen gas based on hydrogen permeable metal membranes is one of the central parts for hydrogen energy economy. It is desirable to develop new metal membrane materials with lower cost and higher performance to replace the precious Pd-based alloy membranes which are presently used in industry. Rapid solidification technology based on splat quenching method is used to prepare a new kind of hydrogen permeable membranes of V-Al-Fe(…) alloys. The formation and evolution of solidification structure and its multiscale structure characteristics are investigated. The relationship is built between the multiscale structure and hydrogen transport properties including hydrogen solubility, diffusivity and permeability. The hydrogen embrittlement, hydrogen flux stability and durability during long-term hydrogen permeation are investigated and the potential mechanisms are discussed in the context of the hydrogen-metal interaction. These generate an effective route to modulate the multiscale structure for the significant improvement in hydrogen transport properties of the alloys. This work provides a new idea to prepare low cost and high performance hydrogen permeable metal membranes of V-based alloys.