[Retracted] Investigation of Tribological Behaviour on DLC Coatings for AA5051 using DC Sputtering

Table 3

Wear test results of coatings.

Sample	Friction coefficient	Width of track (μm)	Loss of volume (m^3)	Wear coefficient (K)
Aluminium substrate	0.95	1.5
1	0.03	230
2	0.03	230
3	0.04	235
4	0.04	238
5	0.03	230
6	0.03	230
7	0.04	236
8	0.03	230