In this study, the emphasis was on elimination of the cracks generated in FGMs during the pressureless sintering by controlling process parameters such as temperature and time at different sintering stages and binder concentration. The microstructural analysis revealed uniform structure with optimized sintering cycle. No cracks were found around the inter-layer boundaries and within the composite layers. Moreover, improvement in the densification and sintering shrinkage was observed with the addition of CNTs and nano HA.
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