In the framework of the AERORECORD-3D project, technical ceramic nanocomposites are being developed through additive manufacturing (AM) for strategic sectors, which will allow the fabrication of aerospace components of complex geometries with high performance in service combining thermal shock resistance with good mechanical and electromagnetic properties at high temperatures. In order to achieve this challenge, cordierite ceramics have been chosen as a base material due to their capacity to work at high temperatures being unaffected by thermal shocking. Moreover, reduced graphene oxide (rGO) nanopowder has been incorporated as a reinforcement to study its influence in these Ceramic Matrix Composites (CMCs) for achieving better mechanical and functional properties. This paper presents the study of the potential variation of several properties in samples prepared with different graphene contents, from 0.25wt% up to 1wt%, and their comparison with the base ceramic sample without reinforcement.
 
The different printable mixtures, the subsequently extruded pellets and the green parts, obtained through Fused Pellets Fabrication  (FPF), have been characterized by microchemical analysis, differential thermal analysis (DTA), X-ray diffraction (XRD) and scanning electronic microscopy (SEM) equipped with X-ray energy dispersive spectrometry (EDX) in order to understand the effect of reinforcing in these composites.
rGO nanopowder has been characterized by Raman spectroscopy before being incorporated into the ceramic composites to study if any modification occurs in the graphene during its incorporation into pellets and green processed parts, also determining its distribution in them. The distribution of graphene within the matrix and, mainly, the evaluation of its quantification, is currently considered itself a scientific challenge.