An experimental study on friction surfaced coating of Aluminium 6063 over AISI 316 stainless steel substrate

This experimental work was designed to produce a solid state cladding of Aluminium 6063 over AISI 316 stainless steel using friction surfacing. Various parametric combinations considered as the supreme aspects for bonding integrity were used. Successful analysis was made on aluminium coating over stainless steel substrate. The coating strength and bonding integrity were tested taking consumable rods unit dimensions of 14 mm, 18 mm and 22 mm. The deep influence of the axial force and the rotational speed on coating thickness and width was seen. Temperature profile was measured using an infrared thermometer and peak temperature recorded for 14 mm, 18 mm & 22 mm diameter rods were 326 °C, 348 °C and 366 °C respectively. The mechanical bonding strength was examined through vickers micro hardness and bending rest. Hardness value of 138HV and bending strength of 3.2 tons at 90° bent angles were the highest for a 18 mm rod. Analysis of micro structure and interfacial features of the coating using FE-SEM and EDAX techniques showed good molecular interlocking between aluminium and iron particles.