Mechanical Properties, Tribology and Electrochemical Studies of Al/Fly Ash/Eggshell Aluminium Matrix Composite
Ndudim Henry Ononiwu, Chigbogu G. Ozoegwu, Nkosinathi Madushele, Ojo Jeremiah Akinribide, Esther T. Akinlabi, V Nathan, R Soundararajan, C Abraham, F Rahman, M Bodunrin, K Alaneme, L Chown, M Haghshenas, V Aigbodion, I Ezema, A Ramanathan, P Krishnan, R Muraliraja, N Ononiwu, E Akinlabi, C Ozoegwu, V Aigbodion, H Kumaraswamy, V Bharat, T Krishna Rao, S Rajesh, D Devaraj, R Sudhakara Pandian, S Rajakarunakaran, N Ononiwu, E Akinlabi, S Dwivedi, A Srivastava, N Maurya, M Maurya, Sunil Kumar Reddy, K Kannan, M Karthikeyan, R Sripad, A Jain, P, S Kumarasamy, K Vijayananth, T Thankachan, G Pudhupalayam Muthukutti, N Siddesh Kumar, R Suresh, G Shiva Shankar, A Dey, K Pandey, David Raja Selvam, J Dinaharan, I Vibin, P Philip, Mashinini, K Alaneme, H Eze, M Bodunrin, B Vinod, S Ramanathan, M Anandajothi, N Ononiwu, C Ozoegwu, N Madushele, E Akinlabi, S Dwivedi, S Sharma, R Mishra, S Mahanta, M Chandrasekaran, S Samanta, R Arunachalam, M Shaikh, S Arif, M Siddiqui, S Bose, A Pandey, A Mondal, S Dwiwedi, A Srivastava, M Chopkar, S Dwivedi, S Sharma, S Sharma, S Dwivedi, N Idusuyi, P Oviroh, A Adekoya, M Durowoju, T Asafa, E Sadiku, S Diouf, M Shongwe, F Asuke, N Ononiwu, C Ozoegwu, O Jeremiah, E Akinlabi, R Manikandan, T Arjunan
Abstract
This work was carried out to investigate the effect of carbonized eggshells (CES) and fly ash on the microstructure, mechanical properties, wear, and corrosion characteristics of Al-Si12. The weight fraction (wt.%) of the CES particles was kept constant at 2.5 wt.%, while that of fly ash was varied at 2.5 wt.%, 5.0 wt.%, 7.5 wt.%, and 10.0 wt.%. The selected fabrication route was stir casting. The x-ray diffraction (XRD) analysis of the cast aluminum matrix composites (AMCs) revealed the presence of phases including α-aluminum, SiO2, and Si with the formation of the intermetallic CuAl2 phase. The microhardness of the cast samples increased with increasing weight fraction of the reinforcements up to the 7.5 wt.% fly ash sample. The tensile strength and compressive strength were highest for the 2.5 wt.%/CES 2.5 wt.%. Tribology studies showed that the lowest wear rate of 4.91 × 10-5 mm3/Nmm was obtained for the 2.5 wt.% fly ash sample, while the corrosion studies showed that the corrosion rate of 2.70 × 10-5 g/hr was lowest for the 2.5 wt.% fly ash as well.