Preparation and wear resistance of pulse electrodeposited Ni-W/Al2O3 composite coatings

► A new coatings material of Ni-W/Al2O3 is developed. ► The Ni-W/Al2O3 coatings were manufactured by pulse electroplating technique. ► Tungsten content in coatings increased significantly with increasing duty cycle. ► Micro-hardness of 859 Hv was obtained with W-40 wt. % in Ni-W/Al2O3 coating.