Characterization of amorphous Co-P alloy coatings electrodeposited with pulse current using gluconate bath

► Co-P alloys are electrodeposited with pulse current using gluconate bath. ► Alloy coatings are amorphous in nature with different P contents. ► As-deposited alloys consist of Co0, Co2+ and Pδ−, P5+ species. ► Increase in the amounts of Co0 and Pδ− is observed upon intermittent sputtering. ► Heat treated coatings show average microhardness values of 940 HK.