This experimental study focused on the surface characterisation and boronising kinetics of a micro-alloyed carbon steel. The boronising treatment was carried out at 1123 K under various exposure times (3, 5, 7 and 9 h), using Ekabor-II powder. A bilayer configuration consisting of FeB and Fe2B was produced. The generated boride layers were characterised by the following experimental techniques: SEM coupled to EDS, XRD and GDOES analysis. The growth kinetics of the boride layers was also analysed.