**2.3 Surface coating characterisation**

The composition of the Ni-CBN composite is controlled during deposition to achieve the preferred properties. It is required to obtain a high ceramic-to-metal ratio for erosion, heat, and wear resistance. The influence of process parameters to obtain a high particle ratio was analysed. The surface characterisation and elemental composition of EN co-deposition on the substrates was performed through JSM-7800F Field Emission Scanning Electron Microscope (FESEM) in conjunction with energy dispersive X-rays (EDX) shown in **Figure 4**.
