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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Experimental investigation on synthesis and structural characterization of Cu-Zn-x wt%Al2O3 (x=0, 3, 6, 9 & 12%) nanocomposites powders through mechanical alloying
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Experimental investigation on synthesis and structural characterization of Cu-Zn-x wt%Al2O3 (x=0, 3, 6, 9 & 12%) nanocomposites powders through mechanical alloying

机译：机械合金化Cu-Zn-x wt％Al2O3（x = 0，3，6，9＆12％）纳米复合粉末的合成及结构表征的实验研究

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摘要

In the present investigation, Cu-Zn-x wt% Al2O3 (x = 0, 3, 6, 9 & 12%) nanocomposite powders were produced by using high-energy mechanical alloying (MA) after 20 h. The crystallite size in terms of nanometer was determined based on the variation of alumina (Al2O3) content in wt% with gliding copper nano-matrix. It was found that the addition of hard Al2O3 particles accelerated the milling process and as a result the particle size of matrix got reduced drastically. Further, it led to faster work hardening rate and fracture of Cu-Zn matrix. The crystallite size of Cu-Zn matrix became smaller (around 25 nm) for 12% Al2O3 reinforcement. The X-ray diffraction analysis was used to investigate the effect of percentage of reinforcement in Cu-Zn matrix on the structural changes. Finally, the scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were also used to investigate the morphology of produced nanocomposite powders. (C) 2016 Elsevier B.V. All rights reserved.
机译：在本研究中，在20小时后使用高能机械合金化（MA）生产了Cu-Zn-x wt％Al2O3（x = 0、3、6、9和12％）纳米复合粉末。基于氧化铝（Al 2 O 3）含量以重量％随滑动铜纳米基质的变化，确定以纳米为单位的微晶尺寸。结果发现，添加硬质的Al2O3颗粒可加速研磨过程，结果使基体的粒径大大减小。此外，它导致更快的加工硬化速率和Cu-Zn基体的断裂。对于12％Al2O3增强，Cu-Zn基体的微晶尺寸变小（约25 nm）。用X射线衍射分析法研究了Cu-Zn基体中补强百分比对结构变化的影响。最后，还使用扫描电子显微镜（SEM）和透射电子显微镜（TEM）来研究生产的纳米复合粉体的形貌。 （C）2016 Elsevier B.V.保留所有权利。

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