“…A high hardness related to the wear resistance is obtained at the surface of ferrous alloys owing to the formation of hard boride layers [1]. In the literature, different boriding processes can be conducted depending upon the physical state of active components: gas [2,3], liquid [4,5], paste [6,7], powder [8][9][10], fluidized bed [11], plasma-electrolytic [12], plasma-assisted [13], and plasma-paste [14].…”