Вибори директора
  1. Головна
  2. Структура
  3. Фізико-хімія і технології наноструктурних і функціональних матеріалів
  4. Публікація

The effect of laser surface texturing on transitions in lubrication regimes during unidirectional sliding contact

А.М.Ковальченко 1*,
 
O. Ajayi 2,
 
A.Erdemir 2,
 
G.Fenske 2,
 
I.Etsion 3
 

1 Інститут проблем матеріалознавства ім. І. М. Францевича НАН України , вул. Омеляна Пріцака, 3, Київ, 03142, Україна
2 Energy Technology Division, Argonne National Laboratory, Argonne, IL 60439, USA
3 Technion-Israel Inst. of Technology, Dept. of Mechanical Engineering, Haifa, IL
ankov@netzero.com

Tribology International, 2005, Т.38, #3
https://doi.org/https://doi.org/10.1016/j.jmrt.2018.05.016

Анотація

Laser surface texturing (LST) is an emerging effective method for improving the tribological performance of friction units lubricated with oil. In LST technology, a pulsating laser beam is used to create thousands of arranged microdimples on a surface by a material ablation process. These dimples generate hydrodynamic pressure between oil-lubricated parallel sliding surfaces. The impact of LST on lubricating-regime transitions was investigated in this study. Tribological experiments were conducted with a pin-on-disk apparatus at sliding speeds in the range of 0.015–0.75 m/s and nominal contact pressures that ranged from 0.16 to 1.6 MPa. Two oils with different viscosities (54.8 and 124.7 cSt at 40 °C) were used as lubricants. The test results showed that laser texturing expanded the contact parameters in terms of load and speed for hydrodynamic lubrication, as indicated by friction transitions on the Stribeck curve …


ГІДРОДИНАМІКА, КОЕФІЦІЄНТ ЛЯМБДА, ЛАЗЕРНЕ ТЕКСТУРУВАННЯ ПОВЕРХНІ, МАШИННИЙ ЕЛЕМЕНТ, МІКРОЯМКИ, РЕЖИМ МАСТИЛА, ТЕРТЯ

Посилання

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  2. Etsion I, Kligerman Y, Halperin G. Analytical and experimental investigation of laser-textured mechanical seal faces. Tribol Trans 1999;42:511–6.

  3. Etsion I, Halperin G. A laser surface textured hydrostatic mechanical seal. Tribol Trans 2002;45:430–4.

  4. Ronen A, Etsion I, Kligerman Y. Friction-reducing surface texturing in reciprocating automotive components. Tribol Trans 2001;44:359–66.

  5. Ryk G, Kligerman Y, Etsion I. Experimental investigation of laser surface texturing for reciprocating automotive components. Tribol Trans 2002;45:444–9.

Публікації