Surface quality of industrial components is enhanced by molybdenum coating. Molybdenum which has high wear resistance and corrosion resistance is used to reduce friction between the moving parts. An experimental investigation of coating on the aluminium substrate using molybdenum nanoparticles was carried out by spin and dip coating methods. It was found that uniform coating was obtained by dip coating method compared to spin coating. The hardness measurement carried out by the Vickers hardness test showed that this coating increased the hardness of the surface by 1.84 times. © 2013 Asian Network for Scientific Information.