增材制造的-钻石复合材料的接口
Xuehao Gao1, Dongxu Cheng1,2, Zhe Sun3
1Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China.
Materials (Basel, Switzerland)
|June 13, 2025
概括
-钻石复合材料的激光粉床融合 (L-PBF) 显示了先进应用的潜力. 钻石粉末上的涂层可以提炼颗粒,减少裂并增强适用于苛刻环境的材料性能.
科学领域:
- 材料科学与工程 材料科学与工程
- 增材制造 增材制造 增材制造
- 复合材料 复合材料 复合材料
背景情况:
- -钻石金属矩阵复合材料 (MMC) 对高温和高辐射应用具有前景.
- 激光粉床融合 (L-PBF) 是一种先进的增材制造技术,用于制造复杂的MMC.
- 了解界面现象对于优化L-PBF制造的W-D复合材料的性能至关重要.
研究的目的:
- 研究由L-PBF制造的-钻石复合材料中的微结构演变和界面反应.
- 评估涂层对钻石颗粒对W-D MMCs属性的影响.
- 提供对L-PBF加工的W-D MMC的理论开发和工程应用的见解.
主要方法:
- 使用L-PBF制造-钻石 (W+D) 和-钻石与Ni涂层 (W+D-Ni) 复合材料.
- 对WD和WD-Ni接口的微结构分析.
- 在接口处进行元素扩散和相位形成分析.
主要成果:
- 在W+D复合材料中,融化而钻石保持固体,导致W-C扩散和形成类似钻石的碳 (DLC) 和超和的W固体溶液.
- 在W+D-Ni复合材料中,涂层促进了扩散,形成了具有不同纳米晶体大小 (几百纳米和几十纳米) 的丰富和瘦DLC相.
- 与W+D样本相比,涂层促进了W粒的精炼,并减少了W+D-Ni样本中的裂纹形成.
结论:
- 对W-D复合材料的L-PBF处理会产生复杂的界面微结构和相位构成.
- 钻石颗粒上的涂层显著改善了微观结构,并减少了W-D MMC中的缺陷.
- 这些发现支持L-PBF在制造高性能-钻石复合材料的潜力,用于苛刻的应用.
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