Abstract

In this research, Al composites reinforced with carbon nanotubes (CNTs) were fabricated by powder metallurgy. The produced samples were prepared from CNTs with 0, 0.5, 1, 1.5, 2, 2.5 and 5 wt.%. The milling process was performed by a planetary ball mill and the samples were compacted under a force of 10 tons for 1 minute. Prior to measurements, the samples were heated at 580 °C for half an hour. Also, electrical resistance, density and hardness of the samples were measured and the effect of sintering temperature on the samples with 1.5 wt.% of CNTs was investigated. The samples were heated at 480, 580, 700 and 1200 °C for half an hour and it was observed that the annealing temperature had a significant effect on the hardness increase of the samples. It was found that the annealing time did not have a significant effect on the hardness of the samples. Measurements showed that by increasing the wt.% of CNTs, the and density of the composite continuously decreased but the electrical resistance and hardness of the samples increased.

摘要

在这项研究中，采用粉末冶金法制造了碳纳米管 (CNT) 增强的铝复合材料。所生产的样品由 0、0.5、1、1.5、2、2.5 和 5 wt.% 的 CNT 制备。研磨过程由行星式球磨机进行，样品在 10 吨的力下压实 1 分钟。在测量之前，将样品在 580 °C 下加热半小时。此外，还测量了样品的电阻、密度和硬度，并研究了烧结温度对 1.5 wt.% CNT 样品的影响。将试样分别在 480、580、700 和 1200 ℃加热半小时，观察到退火温度对试样的硬度增加有显着影响。发现退火时间对样品的硬度没有显着影响。测量结果表明，随着碳纳米管重量百分比的增加，复合材料的密度和密度不断降低，但样品的电阻和硬度增加。