Influence of Nanosized Silicon Carbide on Dimensional Stability of Al/SiC Nanocomposite

Abstract

This study concentrated on the role of particle size of silicon carbide (SiC) on dimensional stability of aluminum. Three kinds of Al/SiC composite reinforced with different SiC particle sizes (25 μm, 5 μm, and 70 nm) were produced using a high-energy ball mill. The standard samples were fabricated using powder metallurgy method. The samples were heated from room temperature up to 500• C in a dilatometer at different heating rates, that is, 10, 30, 40, and 60• C/min. The results showed that for all materials, there was an increase in length change as temperature increased and the temperature sensitivity of aluminum decreased in the presence of both micro-and nanosized silicon carbide. At the same condition, dimensional stability of Al/SiC nanocomposite was better than conventional Al/SiC composites.

Nano and hybrid aluminum based metal matrix composites: an overview

“…Development of Al based hybrid composites for high temperature application reported, have SiC, Al 2 O 3 and TiB 2 as reinforcements [54]. Nano sized SiC reinforced in aluminium exhibit better dimensional stability, hence can be used for thermal applications that requires high dimensional stability [55].…”

“…Various issues in nano and hybrid composites are related to (a) fabrication/processing techniques to produce uniform distribution of reinforcement in matrix and interfacial bonding, (b) formability due to reduced ductility, (c) improvement in mechanical properties with respect to volume fraction and particle size; also to understand strengthening mechanisms and role of individual reinforcement in hybrid composites, (d) tribological properties which include wear and friction, (e) use of composite in corrosive media, (f) thermal conductivity, thermal expansion and dimensional stability at high temperature [55].…”

Effects of SiC wt% Content on Microstructure and Mechanical Properties of Al/SiC Nano Composite produced by Mechanical Alloying, Sintering and Milling

“…The CTE values of Al/nano SiC composites are important in electronic industry as electronic chips [39][40]. Particle reinforced metal matrix composites have already found commercial use on account of the fact that conventional processing techniques, such as powder metallurgy, vacuum hot pressing, co-spray deposition process, squeeze casting, and stir casting methods can be readily adopted for the processing of such materials [41][42].The introduction should briefly place the study References should be numbered in order of appearance and indicated by a numeral or numerals in square brackets, e.g., [1] or [2,3], or [4][5][6].…”

Effect of cold deformation on the microstructure and properties of Al–Cu–Mg/Bean pod ash nano-particles composites

“…Particulate reinforced MMCs have been found to be more economical in the many applications [3]. Much research has been conducted on particulate reinforced MMCs, however the majority of this work has focused on micrometric particle dispersions which are easier to achieve than nano-metric particle dispersions, but less effective in strengthening [4,5].…”