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首页> 外文期刊>Materials Science and Engineering >Enhanced mechanical properties in diamond/Cu composites with chromium carbide coating for structural applications
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Enhanced mechanical properties in diamond/Cu composites with chromium carbide coating for structural applications

机译：增强结构应用中具有碳化铬涂层的金刚石/铜复合材料的机械性能

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摘要

Cr_7C_3-coated diamond particles are used to improve the interfacial bonding and mechanical properties of diamond/Cu composites, which are prepared by the pressure infiltration technique. The characteristics of Cr_7C_3 coating were investigated by Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The results show that a Cr_7C_3 coating layer between the diamond and Cu matrix greatly improves their interfacial bonding, which in turn helps distribute the external load from matrix to diamonds and enhances Young's modulus and tensile strength of the composites. The measured Young's modulus agrees reasonably well with the predictions by a differential effective-medium (DEM) model.
机译：Cr_7C_3涂层金刚石颗粒用于改善通过压力渗透技术制备的金刚石/铜复合材料的界面结合和机械性能。通过扫描电子显微镜（SEM），X射线衍射（XRD）和X射线光电子能谱（XPS）研究了Cr_7C_3涂层的特性。结果表明，金刚石和铜基体之间的Cr_7C_3涂层大大改善了它们之间的界面结合力，这反过来又有助于将外部载荷从基体分配到金刚石，并提高了复合材料的杨氏模量和拉伸强度。测得的杨氏模量与微分有效介质（DEM）模型的预测相当吻合。

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