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通过集成粉末金和热压缩加工来定制Cu/SiC复合材料的微结构和性能
Mohammad Shan1,2, Sajjad Arif2, Muhammad Khairi Faiz1,3,4
1Department of Mechanical Engineering, Faculty of Engineering, University Malaya, Kuala Lumpur 50603, Malaysia.
Materials (Basel, Switzerland)
|January 28, 2026
概括
这项研究引入了一种新的粉末金和热压缩加工 (PM + TCP) 方法,用于铜化碳复合材料. 这种技术通过减少孔隙性和改善钢筋分布来提高材料强度和热稳定性.
科学领域:
- 材料科学 材料科学 材料科学
- 金工程 金工程 金工程
背景情况:
- 铜化碳 (Cu-SiC) 复合材料对于结构和热管理应用至关重要.
- 传统的粉末金 (PM) 对Cu-SiC复合材料的加工往往受到高孔隙性和不均的钢筋分布的影响.
研究的目的:
- 研究使用粉末金与热压缩加工 (PM+TCP) 联合方法制造Cu-SiC金属矩阵复合材料的方法.
- 描述开发的复合材料的微观结构演变和机械性能.
- 评估TCP的有效性,作为一种化后的策略,以克服Cu-SiC复合材料加工中的局限性.
主要方法:
- Cu-SiC复合材料是通过将微型SiC颗粒 (1-25重量%) 加入铜粉来制造的.
- 粉末混合物被压缩,烧结,然后经过连续造和化 (热压缩加工).
- 使用扫描电子显微镜 (SEM),能量分散X射线光谱 (EDS),X射线衍射 (XRD) 和拉曼光谱进行了微结构性表征.
主要成果:
- 与PM + TCP处理相比,PM + TCP路径显著降低了孔隙性,并促进了SiC颗粒的更均的分散.
- SEM,EDS,XRD和拉曼分析证实了相稳定性和没有有害的界面相.
- 集成的PM+TCP路径在约3%的SiC中实现了最佳性能,最终的抗拉强度为~209MPa,硬度为~65HRB,性为~35MJ/m3.
结论:
- 热压缩加工 (TCP) 作为一种有效的烧结后策略,增强Cu-SiC复合材料的密度和微观结构精细化.
- 通过PM + TCP处理的Cu-SiC复合材料的优异性能归因于均的粒子分散,改进的粒子矩阵结合和变形驱动的精炼.
- 结合PM+TCP路径是开发高强度,热稳定的Cu-SiC材料的有希望的方法,用于苛刻的应用.
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