Influence of Oil Viscosity on the Tribological Behavior of a Laser-Textured Ti6Al4V Alloy

被引:1
|
作者
Conradi, Marjetka [1 ]
Kocijan, Aleksandra [1 ]
Podgornik, Bojan [1 ]
机构
[1] Inst Met & Technol, Lepi Pot 11, Ljubljana 1000, Slovenia
关键词
oil lubrication; surface modification; Ti-based alloy; tribology; SURFACE TEXTURE; WEAR; LUBRICATION; BOUNDARY; FRICTION; STEEL; TI;
D O I
10.3390/ma16196615
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Laser texturing with a dimple pattern was applied to modify a Ti6Al4V alloy at the micro level, aiming to improve its friction and wear resistance in combination with oil lubrication to optimize the performance in demanding industrial environments. The tribological analysis was performed on four different dimple-textured surfaces with varying dimple size and dimple-to-dimple distance and under lubrication with three different oils, i.e., T9, VG46, and VG100, to reflect the oil viscosity's influence on the friction/wear of the laser-textured Ti6Al4V alloy. The results show that the surfaces with the highest texture density showed the most significant COF reduction of around 10% in a low-viscosity oil (T9). However, in high-viscosity oils (VG46 and VG100), the influence of the laser texturing on the COF was less pronounced. A wear analysis revealed that the laser texturing intensified the abrasive wear, especially on surfaces with a higher texture density. For low-texturing-density surfaces, less wear was observed for low- and medium-viscosity oils (T9 and VG46). For medium-to-high-texturing densities, the high-viscosity oil (VG100) provided the best contact conditions and wear results. Overall, reduced wear, even below the non-texturing case, was observed for sample 50-200 in VG100 lubrication, indicating the combined effect of oil reservoirs and increased oil-film thickness within the dimples due to the high viscosity.
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页数:10
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