周恩瑞,潘应君,柯德庆

• 1:武汉科技大学材料学部

摘要(Abstract)：

采用真空液相烧结工艺制备了Mo_2FeB_2高熵金属陶瓷材料。借助X射线衍射仪(X-ray diffraction)、扫描电镜(Scanning electron microscopy)、能谱仪(Energy dispersive spectroscopy)和洛氏硬度计分析不同烧结温度对Mo_2FeB_2高熵金属陶瓷组织与性能的影响。结果表明：Mo_2FeB_2高熵金属陶瓷由Mo_2FeB_2硬质相、Cr_(23)C_6硬质相和FeMnCrNi高熵合金粘结相构成；随着烧结温度的升高，高熵金属陶瓷的硬度和断裂韧性呈现先增加后减小趋势，当烧结温度为1260℃时达到峰值，分别为68.8 HRC和10.1 MPa·m~(1/2);FeMnCrNi高熵合金粘结相通过晶格畸变并与Mo_2FeB_2硬质相晶粒形成桥接，导致高熵金属陶瓷韧性的提高。

关键词(KeyWords)： Mo_2FeB_2;高熵陶瓷;烧结温度

Abstract:

Keywords:

基金项目(Foundation): 省部共建耐火材料与冶金国家重点实验室青年基金(2018QN04)

作者(Author): 周恩瑞,潘应君,柯德庆

DOI: 10.13289/j.issn.1009-6264.2024-0258

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