Table 2 Friction coefficient during the steady stage.

From: The effect of QPQ treatment on the wear and corrosion resistance of 42CrMo bearing steel

Process

Friction coefficient

Weight before wear /mg

Weight after wear /mg

Wear weight /mg

580℃×90min

0.36

13622

13619

3

580℃×120min

0.38

13669

13665

4

620℃×90min

0.33

13688

13686

2

620℃×120min

0.53

13526

13520

6

Untreated

0.56

12253

12246

7