A combinatorial approach to the study on mechanism and evaluation techniques of materials degradation under irradiation

材料辐照降解机理和评价技术的组合研究

• 批准号: 23360418
• 负责人: KAMADA Yasuhiro
• 金额: $ 11.98万
• 依托单位: Iwate University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23360418/
• 关键词: 照射損傷; 非破壊評価; 磁気特性

We propose a new approach for the study of irradiation degradation. An Fe-Cr single crystal film with Cr concentration gradient prepared by electron beam deposition in UHV and irradiated by 2.4MeV Cu2+ ions at 475C. Irradiation effects on magnetization process were investigated using a Kerr microscope. Spike domains were observed at the boundary between irradiated and unirradiated regions, and the critical magnetic field where the spike domain disappears increased above the Cr concentration of 9%. This study shows the usefulness of combinatorial approach for the study of irradiation phenomena and demonstrates a feasibility of magnetic nondestructive evaluation of the embrittlement.

提出了一种研究辐照降解的新方法。用超高真空电子束沉积法制备了具有Cr浓度梯度的Fe-Cr单晶薄膜，并在475 ℃下用2.4MeV Cu ~（2+）离子辐照。 利用克尔显微镜研究了辐照对磁化过程的影响。 尖峰域被观察到在辐照和未辐照区域之间的边界，和尖峰域消失的临界磁场增加以上的Cr浓度为9%。这项研究表明了组合方法在研究辐照现象中的有用性，并证明了脆化磁性无损评价的可行性。

项目成果

Development of a combinatorial technique for defect analysis with a positron microprobe

开发正电子微探针缺陷分析组合技术

• 发表时间: 2013
• 作者: N. Oshima;Y. Kamada;H. Watanabe;A. Kinomura;R. Suzuki
• 通讯作者: R. Suzuki

Magnetic and electrical properties of ion-irradiated single crystal iron filmsMagnetic and electrical properties of ion-irradiated single crystal iron films

离子辐照单晶铁膜的磁电特性离子辐照单晶铁膜的磁电特性

• 发表时间: 2013
• 作者: Y. Kamada;H. Watanabe;S. Mitani;N. Oshima;S. Kobayashi;J. Echigoya;M. Mizuguchi and T. Takanashi
• 通讯作者: M. Mizuguchi and T. Takanashi

Ion-Irradiation Enhancement of Materials Degradation in Fe-Cr Single Crystals Detected by Magnetic Techniques

磁技术检测离子辐照增强 Fe-Cr 单晶材料降解

• 发表时间: 2011
• 作者: Y.Kamada;H.Watanabe;S.Mitani;J.Mohapatra;H.Kikuchi;S.Kobayashi;M.Mizuguchi;K.Takanashi
• 通讯作者: K.Takanashi

Neutron Irradiation Effects on Mechanical and Magnetic Properties of Pre-deformed Iron-based Model Alloys

中子辐照对预变形铁基模型合金力学和磁性能的影响

• 发表时间: 2013
• 期刊: Journal of the Magnetics Society of Japan
• 作者: Y. Kamada;J. N. Mohapatra;H. Kikuchi;S. Kobayashi;T. Murakami and H. Watanabe
• 通讯作者: T. Murakami and H. Watanabe

Characteristics of Barkhausen Noise and Permeability on Neutron Irradiated Pure Fe and Fe-Cu Alloy

中子辐照纯铁及铁铜合金的巴克豪森噪声和磁导率特性

• 发表时间: 2012
• 期刊: International Journal of Applied Electromagnetics and Mechanics
• 影响因子: 0.6
• 作者: H. Kikuchi;Y. Kamada;S. Kobayashi;J. Echigoya;H. Watanabe
• 通讯作者: H. Watanabe