Magnetron Sputtered NbN Films with Nb Interlayer on Mild Steel

Table 5

Effect of N₂ flow on critical loads during scratch tests for NbN coatings on SS.

𝐹N2/𝐹Ar (%)	Lc1 (N)	Lc2 (N)
10	11	18
20	12	24
30	11	25
40	10	20
50	8	20
60	8	18
70	7	14