Adhesive bonded single lap and over-lap joints of C/C, C/C-SiC composites and titanium alloy

Abstract

Carbon-carbon (C/C), carbon-carbon-silicon carbide (C/C-SiC) composites and titanium alloy substrates were bonded in single lap and overlap joints with phenolic resin to study the differences in joint strength of two similar and dissimilar materials under shear load. The results indicate that the bonding strength of single lap joint of C/C, C/C-SiC is more than the other ceramic and titanium alloy, whereas Ti-Ti bonded over lap joints show remarkable improvement in similar and dissimilar substrates. Scanning electron microscope (SEM) describes the surface morphology and indicates the bonded zone fractured in the form of thin film which shows strong interaction in between two surfaces. Key words: C/C composite, C/C-SiC composite, titanium alloy, adhesive joints, bonding strength.