Synthesis of novel CuSn ₁₀ ‐graphite nanocomposite powders by mechanical alloying

Abstract

CuSn 10-Gr nanocomposite powders were successfully synthesised by mechanical alloying of the powder mixtures of CuSn 10 and Gr (1, 3 and 5 wt%, respectively, of Gr). The effects of increasing the graphite particles weight percentage and milling time on the morphology, the particle size and the microstructure of the CuSn 10-Gr nanocomposite powders were investigated. The CuSn 10-Gr nanocomposite powders were characterised using a scanning electron microscope, a laser particle-size analyser, X-ray diffraction analysis and energy dispersive X-ray analysis. The results show that the addition of the graphite particles as the reinforcement and the milling time has an important effect on the particle size, the morphology and the yield of the powder. The electron microscopy studies showed the formation of the equiaxed grains with a wide size distribution ranging from 50 to 250 nm. It was found that the particle size decreased until the creation of a balance between the rate of welding and fracturing. Moreover, the powder yield dropped drastically with the increasing milling time and the decreasing graphite content.

Effects of Mechanical Alloying on Sintering Behavior of Tungsten Carbide-Cobalt Hard Metal System

“…It is convenient to use WC particles with sizes in the nanometer range (<10 m) in industrial processes such as metal industries [13][14][15]. Sintering below 500 ∘ C for 24 h can 2 Advances in Materials Science and Engineering afford WC particles that have a maximum particle size of 0.2 m as pointed out by Canakci et al and Joo et al [16,17]. According to these studies, at 250-450 ∘ C, decreasing of the particle size ensured obtaining materials that have more densities (<92%) at sintering temperatures (500 ∘ C).…”

Particle Size Distribution of Nanoscale Ulexite Mineral Prepared by Ball Milling

“…The cause is much better when their physical, structural, electrical, magnetic, and so on properties are compared to micronsized minerals (Canakci et al, 2014;Ashik & Daud, 2016). …”

Effect of nanosilica additive particles on both friction and wear performance of mild steel/CuSn/SnBi multimaterial system

“…In PM, the ultimate fabrication procedures of these composites have been well established and consist of mechanical milling, compacting, sintering and plastic deformation. The mechanical milling is based on a high energy ball milling process where a mixture of powders (of different metals or alloys/compounds) is milled together due to high energy collisions with the balls [3][4][5][6]. The compacting process is a method of creating a single metal or a non-metal layer or a composite material as required.…”

“…Copperbased bronze is particularly used in the friction devices of various mechanism and applications due to their heat conductivity, wear resistance and stable chemical properties [3,12]. The copper-lead alloy has sufficient fatigue strength with good seizure resistance to be used with an overlay as an engine bearing material.…”

“…It is, however, nontoxic and is suitable for replacing lead as a seizure resistant material both in the overlay and in the lining materials [22][23][24][25]. The extensive use of nano-structured materials in the automotive and the engineering industries has increased due to their high strength, high thermal stabilities and high wear resistance in comparison with monolithic alloys [2][3]. These advantages are in addition to the availability of inexpensive reinforcements, cost effective processing methods and the unique combination of improvement in mechanical, tribological and thermal properties.…”