Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 585, Issue -, Pages 362-367Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2013.09.142
Keywords
Aluminium matrix composite; X-ray diffraction; Hardness test; Carbon nanotubes; Hall-Petch effect
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Funding
- Empa's Electron Microscope Centre
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The macro hardness (HV20) was measured for aluminium and 1-9 wt% Multi Wall Carbon Nanotubes (MW-CNTs) composites that were milled and hot compressed. The hardness increased with increasing fraction of MW-CNTs up to 6 wt% (HV20 = 151) and then remained constant. The content of MW-CNTs was significantly higher than reported for similar materials and measurements. The composites were analysed by Raman, TEM and XRD. The Raman and TEM showed MW-CNTs were still present after milling and hot pressing. The XRD was used to determine the Al crystallite size which was used to determine Hall-Petch contribution to the composite hardness. (C) 2013 Elsevier B. V. All rights reserved.
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