Hydrogen Embrittlement Suppression Based on Protective Film-Oriented Compositional Design

基于保护膜导向的成分设计抑制氢脆

• 批准号: 24656078
• 负责人: WATANABE Yutaka
• 金额: $ 2.5万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 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/en/grant/KAKENHI-PROJECT-24656078/
• 关键词: 水素脆化; 環境強度; 鉄鋼材料; 酸化皮膜; 水素透過試験

Oxide species of which solubility of hydrogen is extremely low has been investigated based on literature survey. It has been considered that Cr2O3 shows excellent performance from the suppression of hydrogen permeation point of view.Hydrogen permeability of the oxide layer which formed on type 430 stainless steel with different condition of surface finish and oxidation treatment has been evaluated by electrochemical hydrogen permeation technique. Even a nanometer-scaled Cr rich oxide decrease the hydrogen permission current significantly. Different hydrogen permission current behaviors have been found for different type of surface finish and it may be due to the difference in protectiveness of oxide layer.

根据文献调查，对氢的溶解度极低的氧化物进行了研究。从抑制氢渗透的角度来看，Cr2O3显示出优异的性能。采用电化学氢渗透技术对不同表面光洁度和氧化处理条件的430不锈钢上形成的氧化层的氢渗透率进行了评价。即使是纳米级的富铬氧化物也会显着降低氢允许电流。对于不同类型的表面光洁度，发现了不同的氢允许电流行为，这可能是由于氧化物层的保护性不同所致。

项目成果

保護性酸化皮膜によるステンレス鋼への水素侵入抑制

通过保护性氧化膜抑制氢侵入不锈钢

• 发表时间: 2014
• 作者: 山田宏;阿部博志;渡邉豊
• 通讯作者: 渡邉豊