ABSTRACT The difficulty of manufacturing industrial W-Cu alloys by traditional techniques encourages the study of processing by advanced powder metallurgy. From among hot pressing techniques, Rapid Sinter Pressing has been selected since it offers short cycles and versatility. The effect on the properties of W-Cu alloys manufactured by this fabrication method has been studied, in which the processing parameters have been fixed (980°C, 150 MPa, 15 bar/s and 40 s). Different particle sizes of the starting powder materials together with various relative alloy compositions have been employed in order to determine the degree of influence on properties such as hardness, density and thermal conductivity. Through a microstructural characterisation of the samples, the best distribution was related to the use of the intermediate size W particles and fine Cu particles. Concerning the properties, the composition based on 80W-20Cu resulted in the best combination.

中文翻译：

---

起始粉末对快速烧结压制技术制备的 W-Cu 合金最终性能的影响

摘要 传统工艺难以制造工业用钨铜合金，促进了对先进粉末冶金加工的研究。在热压技术中，选择了快速烧结压制，因为它提供短周期和多功能性。已经研究了通过这种制造方法制造的 W-Cu 合金性能的影响，其中加工参数已固定（980°C、150 MPa、15 bar/s 和 40 s）。已采用不同粒度的起始粉末材料以及各种相关合金成分，以确定对诸如硬度、密度和热导率等性质的影响程度。通过样品的微观结构表征，最佳分布与使用中等尺寸的 W 颗粒和细小的 Cu 颗粒有关。关于性能，基于 80W-20Cu 的组合物产生最佳组合。