Investigation of tribological characteristics of lubricant grease based on Solidoil and urea resin thickener

2021 ◽  
Vol 0 (11) ◽  
pp. 21-27
Author(s):  
V. A. Zorin ◽  
◽  
Le Trong Tuan ◽  
M. N. Erofeev ◽  
I. A. Buyanovskii ◽  
...  
Keyword(s):  
Laboratory Investigation ◽  
Boundary Lubrication ◽  
Road Construction ◽  
Tribological Characteristics ◽  
Temperature Range ◽  
Dropping Point ◽  
Tropical Conditions ◽  
Antiwear Properties ◽  
Polyurea Thickener

The results of laboratory investigation of the tribological characteristics of a new grease based on Solidol, a polyurea thickener providing an increase in the dropping point to 118 °C, and a complex of additives are presented. It has been established that the proposed lubricant is efficient in a wider temperature range, provides higher antiwear properties for tribocoupling parts and considerably reduces friction losses during boundary lubrication in comparison with the original grease Solidol. The developed composition of the lubricant grease is supposed to be used when operating road construction machines in the tropical conditions of Vietnam.

Boundary lubrication of friction contacts steel/steel with Cr—DLC-coatings

2020 ◽  
pp. 558-563
Author(s):  
I.A. Buyanovskii ◽  
M.M. Khruschov ◽  
V.D. Samusenko ◽  
Yu.I. Schsherbakov ◽  
M.V. Atamanov ◽  
...  
Keyword(s):  
Experimental Study ◽  
Coefficient Of Friction ◽  
Boundary Lubrication ◽  
Tribological Characteristics ◽  
Coated Steel ◽  
Dlc Coatings ◽  
Dlc Coating ◽  
Lubrication Mode ◽  
Maximum Coefficient ◽  
Surface Active

The results of an experimental study of the tribological characteristics of inactive, surface-active, and chemically active lubricants in the boundary lubrication mode when steel is rubbed against steel with a carbon diamond-like (Cr—DLC)-coating. For comparison, also tested friction in these friction contacts under similar conditions, but without lubricant. The maximum coefficient of friction and maximum wear was obtained by tribological testing of steel on steel. The minimum coefficient of friction was obtained when steel was rubbed against Сr—DLC-coated steel in a surface-active lubricant medium.

Synergistic Antiwear Effects of Zinc Dialkyl Dithiophosphate and Different Detergents

2008 ◽  
Author(s):  
G. Pennecot ◽  
K. Komvopoulos ◽  
E. S. Yamaguchi
Keyword(s):  
Wear Rate ◽  
Boundary Lubrication ◽  
Base Oil ◽  
Temperature Range ◽  
Zinc Dialkyl Dithiophosphate ◽  
Contact Voltage ◽  
Lubrication Regime ◽  
Steel Surfaces ◽  
Dialkyl Dithiophosphate ◽  
Insight Into

The effectiveness of blends consisting of base oil, some secondary zinc dialkyl dithiophosphate (ZDDP), and different detergents to form antiwear tribofilms on steel surfaces sliding in the boundary lubrication regime was investigated in the temperature range of 105–125°C. The efficacy of the tribofilms formed from these blends was evaluated in terms of contact voltage and wear rate measurements. The best antiwear performance was demonstrated by the tribofilm formed from the blend containing sulphonate detergent. The results of this study provide insight into competing effects between ZDDP and different detergents that affect significantly the antiwear performance of the formed tribofilms.

An extensive laboratory investigation of the use of bio-oil modified bitumen in road construction

2016 ◽  
Vol 106 ◽  
pp. 133-139 ◽  
Author(s):  
Alvaro Guarin ◽  
Abdullah Khan ◽  
Ali Azhar Butt ◽  
Björn Birgisson ◽  
Nicole Kringos
Keyword(s):  
Laboratory Investigation ◽  
Road Construction ◽  
Modified Bitumen ◽  
Bio Oil

scholarly journals Influence of nature of dispersed phase on antiwear properties of high temperature greases

2007 ◽  
Vol 1 (2) ◽  
pp. 97-101
Author(s):  
Leonid Zhelezny ◽  
◽  
Yevgen Kobylyansky ◽  
Oleg Mishchuk ◽  
◽  
...  
Keyword(s):  
High Temperature ◽  
Tribological Characteristics ◽  
Dispersed Phase ◽  
Complex Calcium ◽  
Antiwear Properties ◽  
Load Conditions

Antiwear properties of modern high temperature greases have been studied by simulating various temperature and load conditions on friction machines. Differences in tribological characteristics of greases depending on the nature of their thickeners were determined and explained. Maximum antiwear properties were revealed in conventional complex and overbased complex calcium salicylate, sulfonate and phenolate greases

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