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. 2019 Dec 6;7:857. doi: 10.3389/fchem.2019.00857

Table 3.

The mechanical properties of Tribobond 40 DLC coating surfaces lubricated by L-[CH][Pro].

Before friction test After friction test
Elastic modulus (GPa) 162 ± 27 154 ± 20
Nanoindentation hardness (GPa) 13.4 ± 3.4 12.5 ± 2.8
Elastic recovery 0.42 ± 0.07 0.41 ± 0.08