Effect of B 4 C and SiC nanoparticle reinforcement on the wear behavior and surface structure of aluminum (Al6063-T6) ma
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Effect of B4C and SiC nanoparticle reinforcement on the wear behavior and surface structure of aluminum (Al6063‑T6) matrix composite N. Ramadoss1 · K. Pazhanivel2 · S. Ganesh Kumar3 · M. Arivanandhan4 · P. Anandan5 Received: 19 December 2019 / Accepted: 7 April 2020 © Springer Nature Switzerland AG 2020
Abstract In this study, boron carbide (B4C) and silicon carbide (SiC) nanoparticle reinforced aluminum matrix composites (AMC) were fabricated by stir cast method. The morphology of the SiC and B4C nanoparticles are analysed by scanning electron microscope (SEM). The Electron probe microanalysis and energy dispersive spectroscopic analysis were employed to confirm the dispersion of nano SiC and B4C particles in the aluminum matrix. The abrasion wear behavior of these composite materials was investigated under normal loads of 10 N, 20 N and 30 N. The effect of reinforcing materials on wear behaviour was investigated and the reinforced composites exhibits relatively high wear resistance compared to pure Al6063-T6 alloy. Wear resistance of the B4C reinforced AMCs was relatively higher than that of SiC reinforced AMCs at all the applied loads. SEM images of the worn surfaces revealed that micro fracture of the reinforcement composites was the predominant mechanism associated with 3 body abrasion wear. Moreover, SEM images revealed that the debris and detached particle formations are more in the nanoparticle reinforced AMCs. A strong interfacial interactions between Al matrix and SiC nanograin with strong Al–Si bonding is responsible for the high wear resistance. The wear mechanism is varied from abrasive to oxidative by increasing the normal load in all the samples. Moreover, the formation of a condensed spinel structure with the consistent matrix/particle interface bonding provides a substantial particle strengthening effect. Keywords Antiwear aditives · Friction · Abrasive wear · Wear mechanism · EDS · SEM
1 Introduction Aluminum(Al) alloys are promising structural materials. However, it is necessary to improve the wear resistance for various applications. In particular, uses of aluminum alloys in automotive applications have been limited due to their inferior strength, rigidity and low wear resistance, as compared to those of ferrous alloys. Particle reinforced aluminum composites, offer reduced mass, high stiffness, specific strength and improved corrosion resistance, facilitating the possibility of replacing iron-base materials by particle reinforced Aluminum Metal Matrix Composites
(AMMCs) in automotive applications [1]. Significant improvement have been observed in the SiC reinforced aluminum matrix and B 4C reinforced aluminum matrix composite systems [2, 3]. Ceramic materials have excellent mechanical properties of hardness, thermal strength and chemical stability. Hence, it is expected that the use of ceramics and associated composites will find different industrial applications [3, 4]. However, they are not yet used widely as tribal-material in industrial fields owing to the constraints in their f
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