Transport and mechanical properties of in-situ MgB2/Fe wires produced by initial boriding process

IF 2.8 4区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Journal of Materials Science: Materials in Electronics Pub Date : 2025-03-25 DOI:10.1007/s10854-025-14598-1

Firat Karaboga, Dogan Avci, Hakan Yetis, Ibrahim Belenli

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Abstract

This study examines the impact of a pre-boron diffusion process (boriding) on the mechanical properties of unreacted Mg + 2B/Fe wires. Boriding was performed by filling iron tubes with amorphous boron powder and heat-treating them at 850 °C and 950 °C. The primary goal was to reduce the need for intermediate heat treatment during cold drawing and increase the core density of in-situ MgB₂/Fe wires by forming hard iron boride phases in advance. Tensile strength, microhardness, and scanning electron microscopy were employed to assess the mechanical properties of the wires. Additionally, the structural and transport properties of reacted in-situ MgB₂/Fe mono-core superconducting wires were investigated for various sintering temperatures and times. The results are interpreted in terms of the formation of iron boride (FeB/Fe₂B) phases at the core/iron sheath interface region and the diffusion of boron within the superconducting core.

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本研究探讨了预硼扩散过程（渗硼）对未反应的 Mg + 2B/Fe 金属丝机械性能的影响。硼化是通过在铁管中填充无定形硼粉并在 850 °C 和 950 °C 下进行热处理来实现的。主要目的是减少冷拔过程中对中间热处理的需求，并通过提前形成坚硬的硼化铁相来提高原位镁＋2B／铁丝的线芯密度。拉伸强度、显微硬度和扫描电子显微镜被用来评估金属丝的机械性能。此外，还研究了不同烧结温度和时间下原位反应镁硼铁单芯超导线材的结构和传输特性。研究结果从铁芯/铁鞘界面区域硼化铁（FeB/Fe2B）相的形成和硼在超导铁芯内的扩散两个方面进行了解释。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Materials Science: Materials in Electronics 工程技术-材料科学：综合

CiteScore

5.00

自引率

7.10%

发文量

1931

审稿时长

2 months

期刊介绍： The Journal of Materials Science: Materials in Electronics is an established refereed companion to the Journal of Materials Science. It publishes papers on materials and their applications in modern electronics, covering the ground between fundamental science, such as semiconductor physics, and work concerned specifically with applications. It explores the growth and preparation of new materials, as well as their processing, fabrication, bonding and encapsulation, together with the reliability, failure analysis, quality assurance and characterization related to the whole range of applications in electronics. The Journal presents papers in newly developing fields such as low dimensional structures and devices, optoelectronics including III-V compounds, glasses and linear/non-linear crystal materials and lasers, high Tc superconductors, conducting polymers, thick film materials and new contact technologies, as well as the established electronics device and circuit materials.