Wear and corrosion properties of pure aluminum reinforced with (B4C + Spent Catalyst) composite

Mechanical and microstructure behaviour of WSC/SiC/Al composites synthesized with and without ultrasonic treatment

“…The micrographs in Figure 3(b-d) clearly show that without UST at 0.5-1.5 wt-% of SiC and WSC reinforcement, large micro-clusters, and coarse grains have remained in the microstructure of the prepared composite. When the liquid aluminium surrounds the hard ceramic particle, the solidification rate is delayed, resulting in the development of clusters [21]. The average DAS for three distinct weight percentages of SiC and WSC reinforcement particles without UST is determined, and the calculated DAS for 0.5, 1.0, and 1.5 wt-% of reinforcement are 59.475, 61.215, and 64.325 μm respectively.…”

“…The addition of WSC and SiC reinforcement increased deformation resistance during indentation. The grain boundary and grain refinement were enhanced by reinforcement particle incorporation in the matrix, which significantly improved the mechanical behaviour and reduced the dislocation motion [30]. The hardness of the composite was increased by strengthening mechanisms such as the Hall-Petch effect, the elastic modulus, and variation in the thermal coefficient of expansion (CTE) mismatches between reinforcement and matrix [31].…”

“…The hardness of the composite was increased by strengthening mechanisms such as the Hall-Petch effect, the elastic modulus, and variation in the thermal coefficient of expansion (CTE) mismatches between reinforcement and matrix [31]. The ultrasonic treatment shows that raising the reinforcing weight percentage increases the composite hardness [30]. Figure 8 shows that the hardness of aluminium composite produced by the ultrasonic-aided stir casting method is 21.50% greater than the traditional stir casting method and 92.50% higher than that of pure Al.…”

“…These findings suggest that the combination of WSC and CuO could be a viable technique for enhancing the mechanical characteristics of aluminium matrix composites, thereby potentially finding applications in various sectors. Furthermore, Gayathri et al [21] demonstrated that the production of aluminium matrix composites (AMCs) could be compatible with industrial petroleum waste (IPW) generated by oil refineries. Specifically, the addition of 10 wt-% IPW to pure aluminium resulted in an optimal combination with remarkable mechanical behaviour, such as a 14% increase in tensile strength and a 45% increase in hardness compared to base aluminium.…”

Hardness and corrosion behaviour of stir cast LM26 Al/sugar palm fibre ash composites

“…The corrosion behaviour of 2.5, 5, 7.5 and 10 wt% spent catalyst and SiC reinforced in pure Al matrix composite fabricated via stir casting was carried out (Pragathi and Elansezhian, 2021). The corrosion rate was determined using the weight loss method in an immersed salt solution for 100 h. The corrosion resistance was found to have increased from 0.0000237 to 0.0000105 mm/year with an increased amount of reinforcement to 10 wt% addition due to excellent bond formation between the matrix and the reinforcement.…”