We also quantify the contact surface (voxel 2 ) between the three phases: Pore -CBD, Pore -AM and AM -CBD. In Table , we compare the contact surface area obtained from our DL model vs. the DEM model. Additionally, we calculate the relative error of the three contact surfaces. Figure shows the different phases evolution over time for Microstructure III at 25 % CD. It is observed that, on average, the error % of the AM -CBD contact surface is the smallest between the different phases, with a value of 8.99 %. The average error % of the other two contact surfaces are: 13.76 % and 10.54 % for Pore -CBD and Pore -AM respectively.