Tailoring magnetism of High Entropy Alloys by high energy ball milling

高能球磨制备高熵合金的磁性

• 批准号: 512023409
• 负责人: Professor Dr. Michael Farle
• 金额: --
• 依托单位: Forschungsgruppe Experimentalphysik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/512023409?language=en
• 关键词: Tailoring; magnetism; Entropy; Alloys; energy

The proposal aims at producing homogeneous, micron-sized high entropy alloy (magHEA) particles by high energy ball milling (HEBM)and from these sintered bulk materials with a large magnetization and high Curie temperature. Furthermore, the study will provide a guideline for an effective, up-scalable processing route of soft and hard magnetic HEA materials with chemical and mechanical robustness. At all stages of processing we will correlate morphology, microstructure, chemical composition and homogeneity with magnetic properties which are obtained for single particles, powders and consolidated materials. State-of-the-art high resolution structural and chemical maps will be obtained by transmission and scanning electron microscopy and spectroscopy. Ultimately, we want to achieve an understanding how to optimize the magnetic properties (Curie temperature, magnetization and coercivity) by control of the process parameters We will focus on the following base compositions: a) CrFeCoNi and b) CrMnFeCo to which we add Alx, Gax or Inx with x = 0.5 and x=1

该提案旨在通过高能球磨（HEBM）并从这些具有大磁化强度和高居里温度的烧结块体材料生产均匀的微米级高熵合金（magHEA）颗粒。此外，该研究将为具有化学和机械鲁棒性的软磁性和硬磁性HEA材料的有效的、可升级的加工路线提供指导。在加工的所有阶段，我们将把形态、微观结构、化学成分和均匀性与单个颗粒、粉末和固结材料的磁性能相关联。国家的最先进的高分辨率结构和化学地图将获得透射和扫描电子显微镜和光谱。最终，我们希望理解如何通过控制工艺参数来优化磁性能（居里温度、磁化强度和矫顽力）。我们将关注以下基础成分：a）CrFeCoNi和B）CrMnFeCo，我们向其中添加Alx、Gax或Inx，其中x = 0.5且x=1