Steel containing carbon of 0.2% was coated with Ni and Cr through electrodeposition,and subsequently annealed at 400 and 600 ℃ for 5 min,30 min,1 h and 2 h.During annealing at 400 ℃,the formation and growth of oxides occurred in the form of petals along with voids,cracks and porosities.However,at 600 ℃,the nucleation and growth of chromium oxide whiskers produced a surface almost free from crack,porosity and void for 1 h and 2 h of holding.In accordance with the surface morphology,the bare steel,as-deposited steel,all specimens deposited and annealed at 400 ℃,and specimens deposited and annealed at 600 ℃ for 5 and 30 min exhibited continuous corrosion in 3% of NaCl solution.However,the specimens deposited and annealed at 600 ℃ for 1 and 2 h exhibited an improved corrosion resistance in 3% of NaCl solution with high pitting potential due to presence of a dense passive oxide film almost free from voids at the surface. Steel containing carbon of 0.2% was coated with Ni and Cr through electrodeposition, and subsequently annealed at 400 and 600 ° C for 5 min, 30 min, 1 h and 2 h. the form of petals along with voids, cracks and porosities. Host, at 600 ° C, the nucleation and growth of chromium oxide whiskers produced a surface almost free from crack, porosity and void for 1 h and 2 h of holding. surface morphology, the bare steel, as-deposited steel, all specimens deposited and annealed at 400 ° C, and specimens deposited and annealed at 600 ° C for 5 and 30 min specimens continuous corrosion in 3% of NaCl solution. Host, the specimens deposited and annealed at 600 ° C for 1 and 2 h exhibited an improved corrosion resistance in 3% of NaCl solution with high pitting potential due to presence of a dense passive oxide film almost free from voids at the surface.