从月壤玻璃到先进金属玻璃材料:离子辐照诱导致密纳米晶化（英文）
纳米晶化是制备高性能玻璃材料的重要方法.本研究深入研究了嫦娥五号月壤玻璃微结构及高温晶化行为.发现月壤玻璃表面4μm深度范围内存在大量尺寸约2 nm的纳米级缺陷,分析表明这些缺陷是由太阳风H辐照还原产生的Fe团簇.热处理过程中,这些缺陷作为形核位点,促使析出均匀致密的Fe纳米晶.相较而言,月壤玻璃内部未受辐照的区域Fe纳米晶形核具有更强的随机性,其位置和尺寸波动较大.受此启发,通过H~+离子辐照Fe _(86)B_(14)金属玻璃体系,纳米晶化退火后,在近表面区域获得5–8 nm的纳米晶,显著小于未辐照样品的晶粒尺寸(15–20 nm),使磁导率提升10.2%.以上结果不仅揭示了月壤玻璃的热稳定性,也提出了一种通过辐照调控纳米晶尺寸优化金属玻璃软磁性能的新方法.
机 构:
CAS Key Laboratory of Magnetic Materials and Devices, and Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences；Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences；School of Materials Science and Engineering, Harbin Institute of Technology；Qian Xuesen Laboratory of Space Technology, China Academy of Space Technology (CAST)；College of Engineering and Applied Science, Nanjing University；Institute of Physics, Chinese Academy of Sciences；Songshan Lake Materials Laboratory；
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