Carbon content in the coating, at%

Coating microhardness НV, kg/mm2 load 0.1 N

Friction coefficient μ

PiN-on-DISC, ВК-8 indenter

Wear resistance,

Adhesion

Scratch

Puncture, 5 kg

Initial

After annealing

Load > 100 N

m3/N·m

N

−/+

1

Pure copper

127

123

0.36

<10−15

>50

+

2

18

184

191

0.15

<10−17

>60

+

3

28

200

195

0.10

<10−17

>60

+

4

35

210

-

0.06

<10−17

>60

+

5

72

230

-

0.25

<10−16

40

−/+

6

86

200

-

0.20

<10−15

30

?

7

93

300

-

0.15

<10−13

15

?

8

100

-

-

0.10

<10−13

10

?