Microstructural and Electrochemical study of Value-added Al-Si-Mg alloy reinforced with synthesis carbon nanotube and periwinkle shell nanoparticles for brake disc application

Abstract

The corrosion performance of newly developed aluminum alloy composites using periwinkles shell nanoparticles (PWSnp) and carbon nanotube synthesis from rice husk (CNTs derived RH) replace the high weight and corrosion rate of the current gray cast iron (GCI) was investigate. the A356 alloy reinforced with 1.5wt%PWSnp and 0.5wt% CNTs derived RH was produced using the stir casting method. 5 wt% potassium sulfate (K2SO4(aq), 5 wt% sodium chloride (NaCl(aq), and 1 M sulfuric acid (H2SO4(aq) were used for the potentiostat/galvanostat corrosion performance of the friction materials. The corrosion resistance of the friction materials was in the order of NaCl(aq)˂ (H2SO4(aq))˂ K2SO4(aq). The composite has protection efficiency of 99.36, 99.44, and 98.97% over GCI in 5wt% NaCl, 5wt% K2SO4, and 1MH2SO4. This work has established that in terms of corrosion resistance the developed composite can be a replacement for the gray cast-iron brake disc.