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Synthesis and characterization of Al-SiC nanocomposites produced by mechanical milling and sintering
, Article Advanced Composite Materials ; Volume 20, Issue 1 , 2011 , Pages 13-27 ; 09243046 (ISSN) ; Razavi Hesabi, Z ; Riedel, R ; Seyed Reihani, S. M ; Sharif University of Technology
Abstract
Aluminum powder and various volume fractions of SiC particles with an average diameter of 50 nm were milled by a high-energy planetary ball mill to produce nanocrystalline Al-SiC nanocomposite powders. Double pressing/sintering process was used to consolidate powders to cylindrical specimens. It was shown that a double cycle of cold pressing and sintering can be utilized to obtain high density Al-SiC nanocomposite parts without using a hot-working step. High resolution scanning electron microscopy (HRSEM), X-ray diffraction (XRD) and laser particle size analyzer (PSA) were used to study the morphological and microstructural evolution of nanocomposite powders and bulk samples. The role of...