Formation, structure and properties of magnetic bulk metallic glasses

磁性大块金属玻璃的形成、结构与性能

• 批准号: 5397301
• 负责人: Professor Dr.-Ing. Jürgen Eckert
• 金额: --
• 依托单位: Lehrstuhl für Materialphysik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2002
• 资助国家: 德国
• 起止时间: 2001-12-31 至 2004-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5397301?language=en
• 关键词: Formation; structure; properties; magnetic; bulk

The interesting soft magnetic properties of multicomponent (Fe, Co) based bulk metallic glasses (BMGs) have been a great stimulus for research regarding their synthesis and physical properties. The purpose of the project is to develop new (Fe, Co)-based BMGs with improved glass-forming ability and good soft magnetic properties, and to understand the effect of preparation and processing conditions such as quenching rate, degree of overheating the melt prior to casting, melt purification by fluxing treatment, relaxation, nanocrystallization and stoichiometry variations/additions (e.g. P) on the phase formation and the resulting magnetic properties including domain structures. In addition, it is of interest to study the influence of external conditions like high pressure, low temperature, and external magnetic field on structure formation and the magnetic properties of the material. An additional motivation for the study is to determine how the soft magnetic properties of multicomponent BMGs compare to other conventional metallic glasses which require higher critical cooling rate for glass formation. Therefore, samples with different size and geometry will be prepared at different quenching rates in order to determine the correlation between phase formation, microstructure and soft magnetic properties.

基于多组分（FE，CO）的散装金属玻璃（BMG）的有趣的软磁性能是研究其合成和物理特性的一个很好的刺激。该项目的目的是开发新的（FE，CO）的BMG，具有提高的玻璃形成能力和良好的软磁性能，并了解制备和加工条件的效果，例如淬火速率，在铸造之前过度过热的熔体程度，通过倒数治疗，放松，纳米结晶和稳定性（nanocryspripation and Exepription and Exepription and ece）（e E.包括域结构在内的属性。另外，研究外部条件（例如高压，低温和外部磁场对结构形成和材料的磁性特性）等外部条件的影响。该研究的另一个动机是确定多组分BMG的软磁性能与其他常规金属玻璃相比，需要较高的玻璃形成临界冷却速率。因此，将以不同的淬火速率制备具有不同大小和几何形状的样品，以确定相形成，微结构和软磁性能之间的相关性。