Tribological Behavior of Tool Steel Substrate and Solid Films against 304 BA Austenitic Stainless Steel under Dry Sliding

Table 2

Physical and mechanical properties of film coatings and SKD11 ball.

Film type	Color	Film thickness (µm)	Surface roughness: Ra (µm)	Hardness (HV)
DLC	Black	1.20	0.079	2993 ± 169
CrN	Silver	2.95	0.101	1646 ± 69
TiN	Gold	1.79	0.091	2157 ± 78
TiCN	Gray	1.24	0.142	2765 ± 144
Noncoated (SKD11 hardened ball)			0.114	714

Remark: Hardness values were obtained from the hardness tester.