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Effect of HNT on the Microstructure, Thermal and Mechanical Properties of Al/FA(CS)-HNT Composites Produced by GPI

机译:HNT对GPI制备Al / FA(CS)-HNT复合材料的组织,热力学性能的影响

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摘要

To develop an optimised manufacturing method of fly ash-reinforced metal matrix composites, the preliminary tests were performed on the cenospheres selected from fly ash (FA(CS)) with halloysite nanotubes (HNTs) addition. The preform made out of FA(CS) with and without the addition of HNT (with 5 and 10 wt.%) has been infiltrated by the pure aluminium (Al) via adapted gas pressure infiltration process. This paper reveals the influence of HNT addition on the microstructure (analysis was done by computed tomography and scanning electron microscopy combined with energy-dispersive x-ray spectroscopy), thermal properties (thermal expansion coefficient, thermal conductivity and specific heat) and the mechanical properties (hardness and compression test) of manufactured composites. The analysis of structure-property relationships for Al/FA(CS)-HNT composites produced shows that the addition of 5 wt.% of HNT to FA(CS) preform contributes to receiving of the best mechanical and structural properties of investigated composites.
机译:为了开发一种粉煤灰增强金属基复合材料的优化制造方法,对从粉煤灰(FA(CS))中添加埃洛石纳米管(HNTs)的空心层进行了初步测试。由FA(CS)制成的预成型坯,通过添加或不添加HNT(5%和10 wt。%),已经通过合适的气压渗透工艺被纯铝(Al)渗透。本文揭示了添加HNT对组织的影响(通过计算机断层扫描和扫描电子显微镜结合能量色散X射线光谱法进行分析),热性能(热膨胀系数,热导率和比热)和机械性能的影响(硬度和压缩试验)的复合材料。对生产的Al / FA(CS)-HNT复合材料的结构-性能关系的分析表明,向FA(CS)预成型坯中添加5 wt。%的HNT有助于获得所研究复合材料的最佳机械和结构性能。

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