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

Table 1

Hardness values of DLC coatings.

Sample	1	2	3	4	5	6	7	8
Load (μN)	10422	10424	10423	10422	10422	10424	10422	10425
Hardness (GPa)	5.2	4.9	5.1	5.1	5.2	5.0	5.1	5.1
Modulus (GPa)	89	88	90	90	90	89	88	89