Research Article

Magnetron Sputtered NbN Films with Nb Interlayer on Mild Steel

Table 4

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

Biasing (−V)Lc1 (N)Lc2 (N)

06.510.5
2510.520
5012.024
7515.626
1007.011