International Journal of Corrosion / 2011 / Article / Fig 10

Research Article

Magnetron Sputtered NbN Films with Nb Interlayer on Mild Steel

Figure 10

Scratch test for NbN coating (deposited at N2/Ar flow = 20%) on MS with Nb interlayer at (a) 1 N, showing start of the scratch, (b) 12 N, revealing segregation, cracks, and pores, (c) 22 N, displaying cracks, pores, and pile-up, and (d) 32 N, showing chipping, pile-up, and partial delamination.

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