The system containing 60 wt% solids provided a homogeneous wetting of the nanoparticles forming a transient phase, allowing the ideal solid-liquid interaction when subjected to the external pressure and heat applied. Thus, the nanoparticles rearrangement was favored through sliding of powders under fluid flow and creep on the grain limits, also providing partial dissolution of the particles surface. The increase in temperature led to the evaporation of the medium leading to the equilibrium breakage (solid-liquid), and producing a supersaturated solution that favored the dissolution and precipitation processes. In this case, the lattices mass transport was enhanced, reaching higher levels of densification.