Abstract In this study, Cu-10 wt.% Al-X wt.% Ag alloys (X = 0.0, 2.0, 2.5, 3.0, 4.0, 5.0, 5.5, 6.0) were synthesized through Powder Metallurgy. The effect of silver addition on microstructural, thermal and mechanical properties of the prepared alloys were investigated by using Scanning Electron Microscopy (SEM), Energy Dispersion Spectroscopy (EDS), X-rays Diffractometry (XRD), Transient Plane Source method (TPS), Rockwell hardness tester and Universal testing Machines. The XRD result of raw materials such as pure copper, pure aluminum, pure silver were qualified through JCPDS cards, and subsequently quantified. The microstructural analysis of all samples was carried out, with heating rate of 5 C/min and annealed at room temperature. The results indicated that presence of silver in Cu-Al alloy offered better hardness up-to 3%Ag and compression strength increases up to 2%Ag in Cu-10 wt. %Al alloys which shows intermetallic structure in XRD analysis. Thermal conductivity and thermal diffusivity of the prepared alloys are investigated with help of TPS method in this work. It is observed that both thermal conductivity and thermal diffusivity increased with the increase of silver contents in the alloys owing to higher conductive behavior of silver.

中文翻译：

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粉末冶金法制备加银Cu-Al合金的热力学性能研究

摘要 本研究通过粉末冶金合成了Cu-10 wt.% Al-X wt.% Ag合金（X = 0.0, 2.0, 2.5, 3.0, 4.0, 5.0, 5.5, 6.0）。通过使用扫描电子显微镜 (SEM)、能量色散谱 (EDS)、X 射线衍射 (XRD)、瞬态平面源法 (TPS) 研究银添加对制备的合金的微观结构、热学和机械性能的影响，洛氏硬度计和万能试验机。纯铜、纯铝、纯银等原材料的XRD结果通过JCPDS卡进行鉴定，并进行定量。对所有样品进行显微组织分析，升温速率为 5℃/min，并在室温下退火。结果表明，Cu-Al 合金中银的存在提供了高达 3%Ag 的更好硬度，并且在 Cu-10 wt 中，压缩强度增加了高达 2%Ag。%Al 合金，在 XRD 分析中显示出金属间结构。在这项工作中，借助 TPS 方法研究了所制备合金的热导率和热扩散率。可以观察到，由于银的导电性能更高，热导率和热扩散率都随着合金中银含量的增加而增加。