Abstract
High-energy ball milling is used to create nanostructured materials from coal bottom ash (CBA) and silicon nitride (Si3N4). 36 h of ball milling coal bottom ash reduced it to 51.3 nm, while silicon nitride was reduced from 61.2 nm to 29 nm. Metal Matrix Composites (MMC) is fabricated through liquid stir method. The composites wear rate went up with nano coal bottom ash and nano silicon nitride reinforcementsdue to clustering, as well as a lack of interfacial connection between the base material and hybrid reinforcements employed. Increased frictional drive causes magnified debonding and easy exclusion of composite particles, accelerating the amount of wear. The friction coefficient reduces in all composite configurations as the average load increases.
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