A Rapid Quenching Technique for the Preparation of Thin Uniform Films of Amorphous Solids

Metoda wytwarzania masywnych stopów amorficznych na bazie metali przejściowych grupy 3d o wysokiej mikrotwardości

Soft magnetic composites (SMCs) are a crucial material in the process of electromagnetic conversion, playing a critical role in power production, transmission and utilization. Third-generation semiconductors necessitate soft magnetic materials with distinctive characteristics, such as high response, high power density and low total loss. Fe-based amorphous soft magnetic alloys exhibit exceptional soft magnetic properties, including high saturation magnetization, low coercivity and high permeability. To mitigate high eddy current loss, the utilization of ultra-thin laminating or powder composite cores is recommended. Amorphous soft magnetic composites (ASMCs) are produced through powder metallurgy techniques utilizing insulated and/or coated amorphous soft magnetic powders. The paper presents an overview of Fe-based ASMCs development history, various types of insulating, coating preparation methods, molding preparation technology, heat treatment process and recent significant achievements. Additionally, the study highlights future research hotspots and trends in the discipline of Fe-based ASMCs, along with critical concerns, development prospects and directions faced. 

Recent advances and future developments in Fe-based amorphous soft magnetic composites

This paper outlines how the virtual adjunct method (VAM) of Garcia, Clyne and Prates, describing heat flow in unidirectional solidification, may be applied to splat cooling processes. The model allows finite thermal resistance across the mould-metal interface and leads to explicit solutions which are mathematically exact. Examples are presented showing how the equations may be used to investigate the relationships between melt-substrate properties, operating parameters and local cooling conditions, with particular reference to the treatment of vitrification. A brief outline is given of how closely real systems are likely to conform to the boundary conditions under which the model must be applied. It is concluded that, while numerical treatments may be required if a given system is to be accurately modelled, the VAM equations should prove useful for general examinations of splat cooling characteristics and in assessing the expected effects of changes in design and operational features.

The Application Of A New Solidification Heat Flow Model To Splat Cooling

Viscous flow and forming of a metallic glass

本文简要介绍了非晶合金的发展现状及非晶连续制备技术，并提出了一种弧形连铸技术制备非晶合金薄板的新思路。非晶合金新型连续制备技术及其相关非晶样品不断涌现出来，对促进非晶合金快速发展和推广应用起了重要作用。经过近50年广泛而深入的科学研究，对块体非晶合金的研究已经进入开发性能卓越、质量稳定的非晶合金新产品和可大批量工业化生产的新技术阶段。非晶合金薄板弧形铸坯连铸技术可以充分发挥非晶合金的大过冷液体区间和塑性加工成形特性，有效减少样品再加工工序，提高生产效率，节约能源消耗，降低生产成本。 A new curved continuous casting method for massive production of glassy alloy sheets has been proposed in this paper. Recently, a lot of new methods for continuous producing of bulk metallic glasses have been adopted for massive preparation. The research and development of glassy alloys have been certainly improved by these methods. After nearly 50 years of extensive and in-depth research, attentions have been paid to develop new amorphous alloys with excellent performance, products with high quality and novel technique for industrial applications. Curved con- tinuous casting of glassy alloys could have high efficiencies, low energy consumptions and near net shape casting.

A Rapid Quenching Technique for the Preparation of Thin Uniform Films of Amorphous Solids

Citations

Metoda wytwarzania masywnych stopów amorficznych na bazie metali przejściowych grupy 3d o wysokiej mikrotwardości

Recent advances and future developments in Fe-based amorphous soft magnetic composites

The Application Of A New Solidification Heat Flow Model To Splat Cooling

Viscous flow and forming of a metallic glass

Curved Continuous Casting of Glassy Alloy Sheets

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