Enhancing mechanical properties of 2:17 Sm-Co magnets through Sm2O3 and O2 incorporation

IF 5.3 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY Scripta Materialia Pub Date : 2024-09-07 DOI:10.1016/j.scriptamat.2024.116352

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Abstract

The application range of 2:17 Sm-Co magnets is limited by poor mechanical properties. This study investigates the effects of adding Sm₂O₃ during ball milling and introducing O₂ during jet milling on the mechanical and magnetic properties of 2:17 Sm-Co magnets. With increasing oxygen content, the flexural strength in both Sm₂O₃-added and O₂-added magnets was enhanced. Flexural strength in Sm₂O₃-added magnets increased by 18.5 % with oxygen content (x) rising from 0.07 wt.% to 0.46 wt.%, while in O₂-added magnets, a 43.0 % increase was observed with oxygen content (x) from 0.08 wt.% to 0.41 wt.%. The uniform dispersion of Sm₂O₃ and its grain refinement effect contribute to superior mechanical properties in O₂-added magnets. It can be foreseen that compensation with a certain Sm content can achieve a combination of magnetic and mechanical properties. This study provides insights for developing magnets with exceptional overall performance.

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通过加入 Sm2O3 和 O2 提高 2:17 Sm-Co 磁体的机械性能

由于机械性能较差，2:17 Sm-Co 磁体的应用范围受到了限制。本研究探讨了在球磨过程中添加 Sm2O3 和在喷射研磨过程中引入氧气对 2:17 Sm-Co 磁体的机械和磁性能的影响。随着氧含量的增加，添加 Sm2O3 和添加 O2 的磁体的抗弯强度都有所提高。随着氧含量（x）从 0.07 wt.%增加到 0.46 wt.%，添加 Sm2O3 的磁体的抗弯强度增加了 18.5%，而添加 O2- 的磁体，随着氧含量（x）从 0.08 wt.%增加到 0.41 wt.%，抗弯强度增加了 43.0%。Sm2O3 的均匀分散及其晶粒细化效应有助于提高添加 O2- 的磁体的机械性能。可以预见，一定 Sm 含量的补偿可以实现磁性和机械性能的结合。这项研究为开发具有优异综合性能的磁体提供了启示。

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来源期刊

Scripta Materialia 工程技术-材料科学：综合

CiteScore

11.40

自引率

5.00%

发文量

581

审稿时长

34 days

期刊介绍： Scripta Materialia is a LETTERS journal of Acta Materialia, providing a forum for the rapid publication of short communications on the relationship between the structure and the properties of inorganic materials. The emphasis is on originality rather than incremental research. Short reports on the development of materials with novel or substantially improved properties are also welcomed. Emphasis is on either the functional or mechanical behavior of metals, ceramics and semiconductors at all length scales.