Synthesis and characterization of dual particle (MWCT+B₄C) reinforced sintered hybrid aluminum matrix composites

Abstract

Address correspondence to Thiagarajan Rajmohan. www.tandfonline.com/upstMetal Matrix Nano Composites (MMNC) consist of a metal matrix reinforced with nano-particles featuring physical and mechanical properties very different from those of the matrix. Especially carbon Nano tubes (CNT) can improve the matrix material in terms of wear resistance, damping properties and mechanical strength. The present investigation deals with the synthesis and characterization of aluminium matrix reinforced with micro B4C particles, and Multi Wall Carbon nano Tubes (MWCNT) which have been prepared by powder metallurgy route. Powder mixture containing fixed weight (%) of B4C and different wt% of MWCNT as Downloaded by [UNSW Library] at 11:05 12 August 2015 2 reinforcement constituents that are uniaxial cold pressed and later green compacts are sintered in continues electric furnace. Microstructure and Mechanical properties such as micro hardness and density are examined. Micro structure of samples has been investigated using scanning electron microscope(SEM). X-ray Diffraction(XRD),Energy dispersive X-ray(EDAX), Atomic Force Microscope(AFM) and Transmission Electron Microscope (TEM). TEM microstructure of the nano composite shows the homogeneous dispersion of MWCNT in the Aluminium matrix. The results indicated that the increase in wt % of MWCNT improves the bonding and mechanical properties.

Magnetic, Electrical, and Mechanical Behavior of Fe-Al-MWCNT and Fe-Co-Al-MWCNT Magnetic Hybrid Nanocomposites Fabricated by Spark Plasma Sintering

“…On the other hand, iron is a heavy metal and is a ferromagnetic material with the best saturation induction compared to other ferromagnetic materials. The multi-walled carbon nanotubes (MWCNTs) are known to be advanced, light, and strong materials which have different applications, including the strengthening of materials in various composite materials [13][14][15]. The MWCNTs have good electric, mechanical, and thermal properties, and they are promising as reinforcements in composite materials.…”

MRR - Performance on EDM Drilling over Nano Composite Material

“…Dual reinforcement composites possess better properties when compared with single reinforced composites. [3].Experimental investigation has shown increase in weight % MWCNTs improving micro hardness and density. Aluminum metal matrix reinforced with B 4 C and MWCNT was successfully synthesized using sintering [3].…”

“…[3].Experimental investigation has shown increase in weight % MWCNTs improving micro hardness and density. Aluminum metal matrix reinforced with B 4 C and MWCNT was successfully synthesized using sintering [3]. The requirement of the EDM machining such as B 4 C embedded specimen, due to fairly long spark for removing material which has hard particles [4].…”

“…Three specimens were prepared using the PM method having different composition table [2] of % MWCNT & B 4 C with Al. The experimental details for Level values are presented in table[3]. The DOE (Anova) for Dual Hybrid Metal Matrix (Al+ B 4 C + MWCNT) indicates that F-ratio for the four factors is greater than the limiting valve of the F-ratioFor this Dual Hybrid Metal Matrix the most significant factor found to be CNT% then Ip followed by Toff as for as concerned in S/N Ratio.…”

Partikül Boyutunun ve B4C Katkı Oranının Al-B4C Kompozitlerin Mekanik ve Mikroyapı Özellikleri Üzerine Olan Etkisi

“…Many researchers have made successful attempts to investigate the production, mechanical, and microstructural properties of Al-B 4 C composites [18][19][20][21][22][23][24]. Khademian et al [18] examined the influences of pouring temperature (700, 850, 950 °C) and stirring times (10, 15, 20 min) on the mechanical properties of A356-3%B 4 C using stir casting method.…”