Effect of Carbon Nanotube Dispersion on Mechanical Properties of Aluminum-Silicon Alloy Matrix Composites

Correlation between process and silica dispersion/distribution into composite: Impact on mechanical properties and Weibull statistical analysis

“…It is necessary to control the dispersion at each step of the process to ensure a good dispersion in the final composite, whether working in the molten or the solvent phase. The impact of the particles dispersion is highly studied in the literature for metallic and ceramic composites [11][12][13]. While, for organic composites, only few characterizations of the dispersion were found in the literature [14][15][16][17].…”

Identification of self-lubricative mode for the ultrasonic treated AA6061-B4C-CNT hybrid composites

“…16,17 A major problem associated with the embedding of CNT particles in the metal matrix is the agglomeration due to Van der Waals force, which results in the nonhomogeneous dispersion of particles and deterioration of mechanical as well as tribological properties of composites. 18,19 Murugesan et al 20 addressed that poor wettability, great tendency to agglomeration, and poor interfacial bonding are the major challenges in dispersing CNT particles in the aluminium matrix. Julien et al 21 concluded that high-energy milling is required to achieve uniform dispersion of CNT in the aluminium matrix.…”

Nanocontact Characteristics of Composite Galvanic Chrome Coatings Detected by Sclerometry and Atomic Force Microscopy

“…Composites with nanotubes as a reinforcing phase are usually manufactured by methods of thermal spraying, sintering, powder metallurgy, spark plasma extrusion, and spark plasma sintering. Due to mechanical alloying in the manufacture of the composite, it was possible to achieve a uniform distribution of CNT in the metal matrix [10,11]. It is known that the degree of uniformity of the CNT distribution in a metal matrix is one of the key factors that affect the resulting physicalmechanical properties of the composite [10].…”

“…Due to mechanical alloying in the manufacture of the composite, it was possible to achieve a uniform distribution of CNT in the metal matrix [10,11]. It is known that the degree of uniformity of the CNT distribution in a metal matrix is one of the key factors that affect the resulting physicalmechanical properties of the composite [10]. The formation of a chemical bond between the nanotube and the matrix made it possible to achieve an increase in the compressive yield strength and a decrease in wear resistance by a factor of three, as well as a Vickers hardness growth up to 2 times for Cu-10 % (bulk) CNT composites made by spark plasma sintering [12,13].…”

“…However, to date, the nanocontact physicalmechanical properties of composite materials containing CNTs, including electrolytic coatings, have not been adequately studied. The studies that involved scratch testing were carried out mainly for Al-Si-CNT and Al 2 O 3 -CNT alloys obtained by hot pressing [14], cold gas-dynamic spraying [15,16] and plasma deposition on a substrate [17,18]. It was found that with a weight content of CNT in an alloy of 1 wt %, the wear resistance of Al-Si-CNT increased by 40 % with respect to Al-Si [16].…”