Development of high-corrosion resistance Mg-Li alloy using the combinatorial approach method

利用组合方法开发高耐蚀镁锂合金

• 批准号: 24656428
• 负责人: AKAO Noboru
• 金额: $ 2.58万
• 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-24656428/
• 关键词: Mg-Li合金; コンビナトリアルマテリアル; 高耐食性; 高耐食合金

In order to develop a high corrosion-resistant Mg-Li alloy in aqueous environments, the Mg-Li alloy thin film having continuous Li-content depend on the location on the substrate are synthesized by using the ion-beam-sputter-deposition method. The corrosion resistance on each microscopic continuous part of Mg-Li thin film are evacuated by the local electrochemistry measurement according to the combinatorial approach method.To estimate of the corrosion-resistant of the specimen on each microscopic part of the film, the local electrochemistry measurement which used a micro- electrochemistry cell are carried out on the same specimen, continuously. In addition, to reveal the improvement mechanism for the corrosion behavior of Mg-Li alloy, the chemical state of the early stage oxidized film and passive film on the Mg-Li alloy are analyzed by X-ray photoelectron spectroscopy(XPS), Auger electron spectroscopy(AES) and in-situ ellipsometry on the the Mg-Li alloy film depend on Li content.

为了开发水环境中高耐腐蚀的镁锂合金，采用离子束溅射沉积方法合成了具有连续的锂含量取决于基底上的位置的镁锂合金薄膜。根据组合方法，通过局部电化学测量来评估 Mg-Li 薄膜各微观连续部分的耐腐蚀性能。为了评估样品在薄膜各微观部分的耐腐蚀性，局部电化学测量使用微电化学池在同一样本上连续进行。此外，为了揭示镁锂合金腐蚀行为的改善机理，采用X射线光电子能谱（XPS）、俄歇电子分析仪对镁锂合金早期氧化膜和钝化膜的化学状态进行了分析。 Mg-Li合金薄膜的光谱（AES）和原位椭圆光度测量取决于Li含量。