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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 >Study on the compaction characteristics of CNTs/TC4 composites based on electromagnetic warm compaction
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Study on the compaction characteristics of CNTs/TC4 composites based on electromagnetic warm compaction

机译：基于电磁热压实的CNTS / TC4复合材料的压实特性研究

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摘要

Carbon nanotubes reinforced TC4 composites (CNTs/TC4) had good performance and wide application prospects, but it was difficult to form. In this paper, electromagnetic warm compaction (EMWC) technology was proposed to produce the CNTs/TC4 composite specimens, and the effect of temperature on its compaction characteristics was studied. Specifically, the density, micro-morphology, hardness and compressive strength of the compacts were obtained. Results showed that the density and hardness of the compacts gradually increased and then stabilized as the temperature increased. The compactness of the compact surface gradually decreased above 300 degrees C due to the influence of oxidized powders, while the internal compactness increased. The R-square of the density enhancement equation obtained by Gaussian fitting was 0.9842, which was more reliable than the traditional linear equation. The compressive strength of CNTs/TC4 gradually increased, and the maximum was 1182.38 MPa at 400 degrees C. The addition of CNTs increased the compressive strength of TC4 by more than 20%. The compactness of internal particles had a major influence on the compressive strength. Since there were obvious surface defects at 400 degrees C, the optimal EMPC temperature was 300 degrees C. (C) 2020 Published by Elsevier B.V.
机译：碳纳米管增强TC4复合材料（CNTs/TC4）具有良好的性能和广阔的应用前景，但成型困难。本文提出了电磁温压（EMWC）技术制备碳纳米管/TC4复合材料试样，并研究了温度对其压实特性的影响。具体而言，获得了压实体的密度、微观形貌、硬度和抗压强度。结果表明，随着温度的升高，压实体的密度和硬度逐渐增加，然后趋于稳定。在300℃以上，由于氧化粉末的影响，致密表面的致密度逐渐降低，而内部致密度增加。高斯拟合得到的密度增强方程的R平方为0.9842，比传统的线性方程更可靠。CNTs/TC4的抗压强度逐渐提高，在400℃时达到最大值1182.38mpa。CNTs的加入使TC4的抗压强度提高了20%以上。内部颗粒的密实度对抗压强度有重要影响。由于在400摄氏度时存在明显的表面缺陷，最佳EMPC温度为300摄氏度（C）2020，由爱思唯尔B.V.出版。

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