The present work deals with the development of new metal-based nanocomposites reinforced by multiwall carbon nanotubes (MWCNTs) for nanotechnology field. Samples are prepared in situ and contain a ratio of 4:1 Fe–Cu, with MWCNT additions of 0 vol%, 0.25 vol%, 0.75 vol% and 1 vol%, respectively. The materials are characterized using thermodynamic and structural techniques like dilatometry, DSC, TG, X-ray diffraction and Raman spectrometry (SERS). Dependence of relative variations in elongation has been noted as a function of the temperature range. Among the synthesized materials, the FeCu1%MWCNT nanocomposite seems to be the best configuration. The latter expands the least and presents fewer defects. The Raman study of the FeCu1%MWCNT nanocomposite showed that the MWCNT are in an ordered state. The addition of 1% of MWCNT to FeCu matrix gives the most refined structure with high thermal stability and provides better FeCu ion protection against oxidation.

中文翻译：

---

多壁碳纳米管 (MWCNT) 含量对高能球磨法合成的 FeCu-MWCNT 纳米复合材料的热性能和结构性能增强的影响

目前的工作涉及为纳米技术领域开发由多壁碳纳米管 (MWCNTs) 增强的新型金属基纳米复合材料。样品是原位制备的，含有比例为 4:1 的 Fe-Cu，MWCNT 添加量分别为 0 vol%、0.25 vol%、0.75 vol% 和 1 vol%。这些材料使用热力学和结构技术进行表征，如膨胀法、DSC、TG、X 射线衍射和拉曼光谱 (SERS)。伸长率的相对变化的依赖性已被注意到是温度范围的函数。在合成的材料中，FeCu1%MWCNT 纳米复合材料似乎是最好的配置。后者扩展最少，缺陷更少。FeCu1%MWCNT 纳米复合材料的拉曼研究表明 MWCNT 处于有序状态。