Co-induced decarburization enhancing corrosion resistance and magnetic properties of Fe-based alloys during annealing

IF 4.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Intermetallics Pub Date : 2025-06-20 DOI:10.1016/j.intermet.2025.108886

Zhaoxuan Wang , Qi Chen , Zhigang Qi , Ziqi Song , Zheng Wang , Boxuan Cao , Shaopeng Pan , Jing Pang , Weimin Wang

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Abstract

The as-spun and annealed Fe_80-xP₁₃C₇Co_x glassy alloys (x = 0, 4 and 8) were studied by various techniques. The annealed ribbons with x = 0 and x = 4 exhibited surface layer crystallization, whereas the ribbon with x = 8 crystallized in the middle layer. Consequently, the amorphous phase persisted in the middle layer for x = 0 and x = 4 and in the surface layer for x = 8. Reducing Fe₃C content, increasing Fe₃P content and weakening C 1s peak with increasing x indicate that doping Co promoted the decarburization during annealing. The annealed ribbon with x = 8 exhibited a distinct passivation platform and a superior corrosion resistance due to its amorphous surface layer. Additionally, Co doping effectively compensated for or mitigated the magnetic permeability decrease caused by crystallization, allowing the annealed Fe₇₂P₁₃C₇Co₈ ribbon to maintain good soft magnetic properties and ductility. This study can provide some insights for optimizing the performance of Fe-based glassy alloys and expanding their application range.

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共诱导脱碳提高了铁基合金在退火过程中的耐蚀性和磁性能

采用各种技术研究了Fe80-xP13C7Cox玻璃合金（x = 0,4和8）的纺丝态和退火态。当x = 0和x = 4时，退火带表现出表面层结晶，而当x = 8时，退火带在中间层结晶。因此，当x = 0和x = 4时，非晶相持续存在于中间层，当x = 8时，非晶相持续存在于表层。随着x的增加，Fe3C含量降低，Fe3P含量升高，c1s峰减弱，表明Co的掺杂促进了退火过程中的脱碳。当x = 8时，退火后的带状具有明显的钝化平台，由于其非晶态表面层的存在，具有较好的耐腐蚀性。此外，Co掺杂有效补偿或减轻了结晶引起的磁导率下降，使退火后的Fe72P13C7Co8带保持了良好的软磁性能和延展性。该研究为优化铁基非晶合金的性能和扩大其应用范围提供了参考。

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来源期刊

Intermetallics 工程技术-材料科学：综合

CiteScore

7.80

自引率

9.10%

发文量

291

审稿时长

37 days

期刊介绍： This journal is a platform for publishing innovative research and overviews for advancing our understanding of the structure, property, and functionality of complex metallic alloys, including intermetallics, metallic glasses, and high entropy alloys. The journal reports the science and engineering of metallic materials in the following aspects: Theories and experiments which address the relationship between property and structure in all length scales. Physical modeling and numerical simulations which provide a comprehensive understanding of experimental observations. Stimulated methodologies to characterize the structure and chemistry of materials that correlate the properties. Technological applications resulting from the understanding of property-structure relationship in materials. Novel and cutting-edge results warranting rapid communication. The journal also publishes special issues on selected topics and overviews by invitation only.