Research Article

Tribological Performance of Silahydrocarbons Used as Steel-Steel Lubricants under Vacuum and Atmospheric Pressure

Figure 5

The friction coefficient curves of the lubricants for steel-steel contacts under atmospheric pressure (a) and under vacuum pressure (b) (392 N, 30 min 1450 rpm, and four-ball tribometer).
852386.fig.005a
(a)
852386.fig.005b
(b)