Figure 5

EDS elemental maps of Al, B, C and O taken of samples ‘21’ and ‘31’. Red-green-blue (RGB) images obtained by overlapping the maps of Al and O for sample ‘21’ and Al and B for sample ‘31’ are also presented.

EDS elemental maps of Al, B, C and O taken of samples ‘21’ and ‘31’. Red-green-blue (RGB) images obtained by overlapping the maps of Al and O for sample ‘21’ and Al and B for sample ‘31’ are also presented.