Abstract
In our proof-of-concept studies, pure aluminium matrix composites reinforced with spinel lithium zirconate (Li2ZrO3, LZO) coated silicon carbide (SiC) particles were fabricated by stir casting. Initially, we presented the results of an investigation on spinel LZO coating layer on SiC particles of sub-micron size via facile isothermal hydrolyzing and chemical precipitation procedure under relatively low temperature. Composite materials combining high stiffness (storage modulus) and mechanical properties by reinforcing [email protected]2 and [email protected] obtained by different techniques, thoroughly investigated by various characterization techniques. The amount and coverage of zirconia and LZO crystals on SiC surface were studied through X-ray energy dispersion spectroscopy (EDX) analysis and elemental mapping observation. Further, thermal conductivity and zeta potential characteristics of the surface modified SiC particles were investigated for adequate dispersion and stability of SiC particles. The resulting aluminium metal matrix composite exhibits 90% higher stiffness and 3.8-fold increase in tensile strength, respectively as compared to the pure aluminium.
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