铁镍抗氢合金的塑性损减源于内部组织结构缺陷引发的外氢累积损伤；结构完整钝性氧化膜的形成有望减轻或阻断环境氢的渗透。当前瓶颈是难以在合金表面形成有效的防氢渗透阻挡层，涉及的基本科学问题是钝化膜的生长、调控及与氢作用的表面与界面现象缺乏清晰的认识；其中的关键技术问题是钝化膜的特性及缺陷演化过程缺乏原位实时和量化的分析方法，无法建立准确的构效关联。针对上述问题，本项目提出基于原位微纳拉曼成像、缺陷形态及定氢分析、半导体光电测量研究钝化膜形成及其缺陷与氢作用的新构想。考察不同工艺（固溶、时效、焊接及选择氧化）对保护性钝化膜的形成、氢渗透以及基体力学性能的影响；揭示钝化膜缺陷性质对氢扩散的作用规律和内在机理，建立工艺条件-钝化膜缺陷变化-合金力学性能损减之间的量化关联。在此基础上提出形成具有高效阻氢及自修复钝化膜的新方法，为我国高性能抗氢及其同位素铁镍合金的研发和使用提供理论支持和技术支撑。

The plasticity loss reduction in iron nickel hydrogen resistant alloy comes from internal organization structure defects caused by hydrogen cumulative damage; and the low hydrogen permeation passive oxide film covered is expected to reduce or block environmental hydrogen penetration. The current bottleneck, however, is difficult to form an effective hydrogen permeation barrier on the alloy surface, the basic science problem involved in is the lack of clear understanding of surface and interface phenomena on the growth mechanism of the oxide film, what's the management and how hydrogen behaves; The key technical problem is that the scarcity of real-time and in situ quantitative analysis of the characteristics of the passive films and their defect evolution, which make it unable to establish the exact structure-function relationship. To deal with the above problems, a new proposal based on the in-situ micro-nano scale Raman mapping, the defect shape and hydrogen analysis and semiconductor optoelectronic measuring of the passive film formation and its defects evolution of iron nickel alloy is put forward in this project. The influence of different process (solid solution and aging, welding and subsequent selective oxidation) on the hydrogen permeation property and matrix mechanics performance will be investigated; and the effect of the passive film defects properties on the hydrogen diffusion and relevant internal mechanism will be uncovered and the quantitative correlation, as a result, between process conditions - passive film defects change - matrix mechanical properties of loss reduction can be established. Based on these knowledge a novel method for the developing of passive film with efficient hydrogen stopping and self-healing properties is to present with a aim of providing theoretical fundamental as well as technical support for our country in the development and engineering application of high performance hydrogen and its isotope resistant iron nickel alloy.