Shashibhushan Raju, M.Prashanth, H.Bhat, K.2026-02-052013International Journal of Earth Sciences and Engineering, 2013, 6, 4, pp. 717-7219745904https://idr.nitk.ac.in/handle/123456789/26690Hot-dip aluminising of mild steel was done using Al-11Si-1.2Cu (at %) bath at 750°C for dipping time ranging from 300 to 3600 seconds. Aluminised layer was investigated using scanning electron microscope and energy dispersive spectroscopy. The intermetallic layer consisted of 4 distinct layers, namely, ?<inf>5</inf>-(Al<inf>7</inf>Fe<inf>2</inf>Si), ?-FeAl<inf>3</inf>, ?-Fe<inf>2</inf>Al<inf>5</inf> and ?<inf>1</inf>-(Al,Si)<inf>5</inf>Fe<inf>3</inf>. Total intermetallic layer thickness was following parabolic growth kinetics with time. Total thickness was increasing predominantly due to increase in Fe<inf>2</inf>Al<inf>5</inf> layer, which itself was following parabolic growth behaviour. Total intermetallic layer thickness was smaller compared to intermetallic layer thickness reported using pure aluminium or aluminium silicon baths. © 2013 CAFET-INNOVA TECHNICAL SOCIETY.Aluminium-siliconAluminum-silicon-copper bathDipping timeHot dipsIntermetallic layerParabolic growthPure aluminiumCarbon steelEnergy dispersive spectroscopyScanning electron microscopySiliconAluminumaluminumcopperreaction kineticssiliconsteeltemperature