Reduction of friction and wear by grooves applied on the nanoscale polished surface in boundary lubrication conditions

被引：0
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作者：
Alexander U Stelmakh
Yuriy V Pilgun
Sergiy O Kolenov
Alexey V Kushchev
机构：
[1] National Aviation University,
[2] Taras Shevchenko National University of Kyiv,undefined
来源：
Nanoscale Research Letters | / 9卷
关键词：
Friction force; Wear reduction; Microstructured surface; Compressive-vacuum; Boundary lubrication; Sliding tribosystem;
D O I：
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学科分类号：
摘要：
The evolution of a friction surface geometry with initially directed microscale grooves on a nanoscale polished surface in ring-on-block sliding contact is studied experimentally. Reduced wear and friction is observed when the orientation of grooves coincides with the direction of sliding. A new compressive-vacuum hypothesis of friction force nature under a condition of boundary lubrication is proposed, which successfully explains the observed phenomena. Grooves supply lubricant into the contact zone and facilitate its devacuumization, which lead to substantial reduction of surface wear. The obtained results enable developing optimized roughness profiles of friction surfaces to create high-performance durable friction units.
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