The results indicate that, as the
slippage increased, the friction coefficient raised up at steady state of the rolling contact
friction as well as the wear volume. With the increasing slippage, the damage of wear zone was
transformed from mild to severe, which presented the typical fatigue features: delamination and
sub-cracks. The worn surface was covered with a thin tribo-film under a small slippage condition.
With the increase of slippage, the oxidation wear behavior weakened and the size of the debris
particles became larger. As the slippage increased, the mainly wear mechanism transformed from
the oxidation wear to the fatigue wear
(delamination mechanism) and then into the abrasive wear accompanying delamination.
The results indicate that, as theslippage increased, the friction coefficient raised up at steady state of the rolling contact friction as well as the wear volume. With the increasing slippage, the damage of wear zone was transformed from mild to severe, which presented the typical fatigue features: delamination and sub-cracks. The worn surface was covered with a thin tribo-film under a small slippage condition. With the increase of slippage, the oxidation wear behavior weakened and the size of the debris particles became larger. As the slippage increased, the mainly wear mechanism transformed from the oxidation wear to the fatigue wear(delamination mechanism) and then into the abrasive wear accompanying delamination.
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