Microstructure evolution mechanism of WB-doped Fe-based amorphous composite coating under proton beam irradiation

IF 4.8 2区材料科学 Q1 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Materials Characterization Pub Date : 2024-09-27 DOI:10.1016/j.matchar.2024.114414

Ran Bi , Jing Li , Decheng Wang , Zhou Zhou , Jingxian Ma , Tielong Shen , Shanchao Zuo , Minghuan Cui , Lilong Pang , Peng Jin

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引用次数: 0

Abstract

Fe-based amorphous coatings exhibit exceptional irradiation resistance attributed to their distinct topologically disordered structure, rendering them highly attractive for advanced nuclear energy applications. The incorporation of WB secondary phase doping can notably alter the coating to enhance its operational safety. In this investigation, three different Fe-based composite coatings, with varying WB doping levels of 5 %, 10 %, and 15 % were fabricated through the High-Velocity Oxy-Fuel (HVOF) spraying technique. Irradiation tests were conducted at room temperature utilizing a proton beam with an energy of 1.52 MeV to simulate neutron irradiation environment in a nuclear reactor. The microstructure evolution before and after irradiation was systematically investigated with XRD, SEM, and TEM techniques. The results demonstrated that proton irradiation induced free volume, crystallization and H bubbles evolution. The doping of WB diminished the proton implantation dose threshold for segregation in irradiation plateaus while enhancing the growth of precipitates around the damage zone by inducing the production of M₂₃C₆ carbides and, at the same time, increasing the probability of H bubble nucleation and growth. These findings provide insights for iterative updates in Fe-based amorphous materials, informing their further development and application.

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质子束辐照下 WB 掺杂铁基非晶复合涂层的微观结构演化机理

铁基无定形涂层因其独特的拓扑无序结构而表现出卓越的耐辐照性能，使其在先进核能应用中具有极高的吸引力。加入 WB 二相掺杂可以显著改变涂层，从而提高其运行安全性。在这项研究中，通过高速富氧燃料（HVOF）喷涂技术制造了三种不同的铁基复合涂层，其 WB 掺杂水平分别为 5%、10% 和 15%。利用能量为 1.52 MeV 的质子束在室温下进行了辐照试验，以模拟核反应堆中的中子辐照环境。利用 XRD、SEM 和 TEM 技术对辐照前后的微观结构演变进行了系统研究。结果表明，质子辐照诱导了自由体积、结晶和 H 气泡的演化。WB 的掺杂降低了辐照高原偏析的质子植入剂量阈值，同时通过诱导 M23C6 碳化物的产生，促进了损伤区周围沉淀物的生长，同时增加了 H 气泡成核和生长的概率。这些发现为铁基非晶材料的迭代更新提供了启示，为其进一步开发和应用提供了参考。

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来源期刊

Materials Characterization 工程技术-材料科学：表征与测试

CiteScore

7.60

自引率

8.50%

发文量

746

审稿时长

36 days

期刊介绍： Materials Characterization features original articles and state-of-the-art reviews on theoretical and practical aspects of the structure and behaviour of materials. The Journal focuses on all characterization techniques, including all forms of microscopy (light, electron, acoustic, etc.,) and analysis (especially microanalysis and surface analytical techniques). Developments in both this wide range of techniques and their application to the quantification of the microstructure of materials are essential facets of the Journal. The Journal provides the Materials Scientist/Engineer with up-to-date information on many types of materials with an underlying theme of explaining the behavior of materials using novel approaches. Materials covered by the journal include: Metals & Alloys Ceramics Nanomaterials Biomedical materials Optical materials Composites Natural Materials.