Tribological Properties of Sn-Pb Based SnPbAlZn Journal Bearings

2012 ◽  
Vol 54 (10) ◽  
pp. 713-717
Author(s):  
Bekir Sadik Ünlü ◽  
Ahmet Murat Pinar ◽  
Kamil Özdin
Keyword(s):  
Tribological Properties ◽  
Journal Bearings

Effect of the Concentration of the Magnetic Particles in the Ferrooil on its Dynamic’s Viscosity Changes in an External Magnetic Field

2015 ◽  
Vol 220-221 ◽  
pp. 324-327 ◽  
Author(s):  
Marcin Frycz ◽  
Wojciech Horak
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Tribological Properties ◽  
Dynamic Viscosity ◽  
Magnetic Particles ◽  
Magnetic Polarity ◽  
Journal Bearings ◽  
Physical Conditions ◽  
Viscosity Changes

There is presented an effect of the changes of the concentration of magnetic particles included in the ferrooil on the dynamic viscosity in the presence of external magnetic field in this paper. The study was conducted in the context of temperature’s changes. In that way, the influence of external physical conditions of ferrooil’s employment was also taken into account. Ferrooil’s dynamic viscosity changes significantly alter the tribological properties and thus its usefulness as a lubricant of the sliding journal bearings. Due to the fact that the ferrooil demonstrates strong magnetic polarity in the presence of an external magnetic field, it is possible to control the viscosity by means of an external magnetic field just by changing the intensity as well as by changing of the concentration of magnetic particles.The paper presents, in the form of graphs, the changes of ferrooil’s dynamic viscosity as a function of temperature and concentration of magnetic particles. The results of research were also subjected to analysis.

Tribological Properties of Rock Bit Journal Bearings for Journal with Nanosecond Laser Surface Texture

2020 ◽  
Vol 63 (6) ◽  
pp. 1020-1040
Author(s):  
Lin Zhong ◽  
Gang Wei ◽  
Guorong Wang ◽  
Xia He ◽  
Guihong Feng ◽  
...  
Keyword(s):  
Tribological Properties ◽  
Surface Texture ◽  
Journal Bearings ◽  
Laser Surface ◽  
Nanosecond Laser ◽  
Laser Surface Texture ◽  
Rock Bit

Tribological properties of polymer-based journal bearings

2009 ◽  
Vol 30 (7) ◽  
pp. 2618-2622 ◽  
Author(s):  
Bekir Sadık Ünlü ◽  
Enver Atik ◽  
Sinan Köksal
Keyword(s):  
Tribological Properties ◽  
Journal Bearings

Tribological properties of boronized ferrous based PM journal bearings

2015 ◽  
Vol 57 (3) ◽  
pp. 259-266
Author(s):  
Bekir Sadık Ünlü ◽  
Selim Sarper Yilmaz ◽  
Naci Kurgan ◽  
Remzi Varol
Keyword(s):  
Tribological Properties ◽  
Journal Bearings
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