fabrication of well鄄dispersed, multiwall carbon - 新型炭材料.pdf

第27卷摇 第3期 新摇 型摇 炭摇 材摇 料 Vol.27摇 No.3 摇 2012年6月 NEW CARBON MATERIALS Jun. 2012 摇 Article ID:摇 1007鄄8827(2012)03鄄0161鄄05 Fabrication of well鄄dispersed,multiwall carbon nanotube鄄reinforced aluminum matrix composites 1 1 1 2 2 A.H. Javadi ,摇 Sh. Mirdamadi ,摇 M.A. Faghihisani ,摇 S. Shakhesi ,摇 R.Soltani (1. Department of Materials Engineering,Science and Research Branch,IslamicAzad University (IAU),Tehran,Iran; 2. Engineering Research Institute,Tehran,Iran) Abstract:摇 Mechanical alloying wasused to disperse multiwall carbon nanotubes (MWCNTs) in an aluminum (Al) matrix. Mixtures consisting of99% pure Al powder and a massfraction of2% MWCNTswere sonicated. Then,hori鄄 zontal ball milling wasused to generate mechanical bonding between the Al particles and the MWCNTs. The structure observedby a field鄄emission scanning electron microscoperevealed an attachment of MWCNTstothe surface of the Al鄄 flakes. FESEM results showed that particle size and morphology varied with milling time. Finally,the composite pow鄄 derswere processed intobulk material by compaction and sintering. The macro鄄hardness confirmed the improvement in the mechanical properties due to the addition of MWCNTsto the Al matrix. Keywords:摇 Multiwalled carbon nanotube;Metal matrix composite;Ball milling CLCnumber:摇 TB333摇 摇 摇 摇 摇 Document code:摇 A 1摇 Introduction namely ball milling, extrusion, hot pressing, equal channel angular