A study on the structural characters of nano hybrid sintered aluminium composites

Department of Mechanical Engineering, Sri Chandrasekharendra Saraswathi Viswa Maha Vidyalaya, Kancheepuram, Tamil Nadu, India.

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Published online: 3 March 2026

Abstract

Metal matrix composites play a vital role in automotive and aerospace industries and preparation of such materials with superior strength-to-weight ratio is a challenge for researchers. The present research focuses on the preparation and inquiry of characters on the aluminium matrix reinforced with nano Boron Nitride (BN) and nano Titanium dioxide (TiO₂) powders for aerospace applications. Composites have been prepared through powder metallurgy route with pure aluminium, pure aluminium reinforced with nano boron nitride (Al+BN), pure aluminium with nano titanium dioxide (Al+TiO₂) and pure aluminium with both nano boron nitride and nano titanium dioxide (Al+BN+TiO₂) hybrid forms under various compositions. Physical characterization showed that pure aluminium with 2.5 wt% BN a least density among all the fabricated composites. Also, it is revealed that pure aluminium with 1 wt% BN and 1.5 wt% TiO2 produced a maximum tensile and flexural strengths. On the other hand, pure aluminium with an equal composition (1.25 wt%) of BN and TiO2 produced a maximum compressive strength. The overall best composite is identified and concluded that the hybrid form of composite is superior in all aspects.