Efficiency of laser surface texturing in the reduction of friction under mixed lubrication
Efficiency of laser surface texturing in the reduction of friction under mixed lubrication
复制标题
DOI：
10.1016/j.triboint.2014.04.012
复制
发表时间：
2014-09-01
影响因子：
6.2
通讯作者：
Gumbsch, Peter
中科院分区：
文献类型：
--
作者：
Braun, Daniel;Greiner, Christian;Gumbsch, Peter
在销盘试验中，研究了直径为15 ~ 800 μ m的钢滑动副在混合润滑状态下的摩擦学行为。对引脚进行织构，使总凹痕面积恒定在10%，深径比为0.1。以聚α -烯烃（PAO）为模型润滑剂。实验在50℃和100℃的单向滑动条件下进行，在一定的深径比下，摩擦系数与织构直径、滑动速度和油温（粘度）存在显著的非线性关系。在一定的滑动速度下，最佳直径可以减少高达80%的摩擦。导致最大摩擦减少的韧窝直径显著依赖于油温。通过将油温从100℃降低到50℃，导致最大摩擦减少的韧窝直径从40 μ m降低到200 μ m。版权所有。
The tribological behavior of steel sliding pairs with dimples ranging from 15 to 800 mu m in diameter was characterized in the mixed lubrication regime in a pin-on-disk experiment. The pin was textured, keeping the total dimpled area constant at 10% and the depth-to-diameter ratio at 0.1. Polyalphaolefin (PAO) was used as a model lubricant. Experiments were carried out under unidirectional sliding conditions at 50 and 100 degrees C. At constant depth-to-diameter ratio the results showed a significant non-linear dependence of the friction coefficient on the texture diameter, sliding speed and the oil temperature (viscosity). A friction reduction of up to 80% was possible with the optimal diameter for certain sliding speeds. The dimple diameters leading to the highest friction reduction significantly depend on the oil temperature. By reducing the oil temperature from 100 to 50 degrees C the dimple diameter resulting in the highest friction reduction changed from 40 to 200 mu m. (C) 2014 Elsevier Ltd. All rights reserved.