Impact on the Mechanical, Wear and Microstructure of CNT Reinforced Al2O3 MMCs

Abstract

In order to forecast the microstructure, mechanical, and wear characterization investigations of MMCs and compare the outcome with Al2O3, the experiment's aim is to look into the effects of diversity in the proportion of composition of Al2O3/CNT composite. In today's world of engineering, metal matrix composites are becoming more and more popular. It is extensively used in several industries, including the sports, aviation, and defence sectors. A thorough investigation of the different mechanical characteristics of carbon nanotubes -reinforced Al2O3 composites is required, according to the conclusions drawn from the literature survey. Al2O3 is utilised in the production of many different components due to its high strength. We will use the liquid metallurgical approach to prepare the composites needed for this project. Composites are now used commercially and are widely acknowledged as a competent way for manufacturing MMCs, when compared to other alternative processes. Al2O3 with 1% CNT, Al2O3 with 3% CNT, Al2O3 with 5% CNT, 7% CNT with Al2O3, 9% CNT with Al2O3, and Al2O3 will all be present in different percentages in the composite that this study develops. Tests for Brinell machine was employed for the test of hardness, The Universal Assessment apparatus was utilised for the compression test, the pin-on-disc tester was employed in the wear testing, and an optical microscope was used for the microstructure characterization. The results of the hardness and compression test showed that when CNT's proportion rose, so did the hardness and compression strength of Al2O3. The microstructure analysis of Al2O3 demonstrates that carbon nanotubes are spreading evenly throughout the matrix, and that the wear and mechanical characteristics of the CNT particles are enhanced when the Al2O3 matrix is introduced. In comparison to morphology of the wear surface of Al2O3-CNT composites, According to the wear test results, morphology of the wear surface of Al2O3 exhibits a rough surface with more pits and crests.