scholarly journals Tribological Performance and Lubrication Mechanism of Carbon Microspheres as Oil-based Lubricant Additive on Aluminum Alloy Substrate

2017 ◽  
Vol 32 (6) ◽  
pp. 625 ◽  
Author(s):  
GU Yu-Kang ◽  
CAO Lei ◽  
WAN Yong ◽  
GAO Jian-Guo
Keyword(s):  
Aluminum Alloy ◽  
Lubricant Additive ◽  
Tribological Performance ◽  
Carbon Microspheres ◽  
Lubrication Mechanism ◽  
Alloy Substrate

Oil-soluble ionic liquid to lubricate silicon

2021 ◽  
pp. 135065012098488
Author(s):  
Waleed Al-Sallami ◽  
Pourya Parsaeian ◽  
Abdel Dorgham ◽  
Anne Neville
Keyword(s):  
Ionic Liquid ◽  
High Temperature ◽  
Friction And Wear ◽  
Tribological Performance ◽  
Considerable Reduction ◽  
Zinc Dialkyldithiophosphate ◽  
Lubrication Mechanism ◽  
Wear Coefficient ◽  
Wear Performance ◽  
Micro Scale

Trihexyltetradecylphosphonium bis(2-ethylhexyl)phosphate (phosphonium phosphate) ionic liquid is soluble in non-polar lubricants. It has been proposed as an effective anti-wear additive comparable to zinc dialkyldithiophosphate. Previously, phosphonium phosphate has shown a better anti-wear performance under some conditions such as high temperature. In this work, the tribological performance and the lubrication mechanism of phosphonium phosphate are compared with that of zinc dialkyldithiophosphate when lubricating silicon under various tribological conditions. This can lead to an understanding of the reasons behind the superior anti-wear performance of phosphonium phosphate under some conditions. A micro-scale study is conducted using a nanotribometer. The results show that both additives lead to a considerable reduction in both friction and wear coefficients. The reduction in the wear coefficient is mainly controlled by the formation of the tribofilm on the rubbing surfaces. Zinc dialkyldithiophosphate can create a thicker tribofilm, which results in a better anti-wear performance. However, the formation of a thicker film will lead to a faster depletion and thus phosphonium phosphate can provide better anti-wear performance when the depletion of zinc dialkyldithiophosphate starts.

A study of the adhesion of thiokol-epoxy hermetics to a brass and an aluminum alloy substrate

1991 ◽  
Vol 5 (9) ◽  
pp. 691-695 ◽  
Author(s):  
E.S. NEFED'EV ◽  
T. Yu. Mirakova ◽  
L.A. Averko-Antonovich ◽  
M.K. Kadirov ◽  
A.V. IL'YASOV
Keyword(s):  
Aluminum Alloy ◽  
Alloy Substrate

Synergistic lubricating performance of h-BN/GF nanoparticles as oil additives for steel-steel contact

2021 ◽  
pp. 1-17
Author(s):  
Shuai Li ◽  
Qiang Ma ◽  
Zhe Tong ◽  
Qi Liu ◽  
Guangneng Dong
Keyword(s):  
Hexagonal Boron Nitride ◽  
Lubricant Additive ◽  
Interfacial Interaction ◽  
Wear Depth ◽  
Mass Ratio ◽  
Lubrication Mechanism ◽  
Major Objective ◽  
Graphite Fluoride ◽  
Oil Additives ◽  
Resistance Performance

Abstract The major objective of this work is to investigate the synergistic lubricating performance of hexagonal boron nitride (h-BN) and graphite fluoride (GF) nanoparticles (NPs) as lubricant additive in white oil. The tribological tests were carried out on steel-steel contacts using reciprocating ball-on-disk tribometer. Compared with white oil, addition of 0.1 wt. % h-BN/GF reduced the friction coefficient, wear rate and wear depth by 41.1 %, 89.1 %, and 92.3 %, respectively. Furthermore, when the mass ratio of h-BN and GF is 1:1 and the content of h-BN/GF nanocomposites is 0.1 wt. % the white oil show the best lubrication and wear resistance performance. Finally, the synergistic lubrication mechanism was investigated, the unique microstructure of the h-BN/GF composite and weak interfacial interaction between h-BN and GF contributed to the formation of continuous and adhesive tribo-films at the interface.

Aluminum borophosphate glaze-coated aluminum alloy substrate: Coating properties and coating/substrate coupling

2021 ◽  
Vol 47 (2) ◽  
pp. 2050-2057
Author(s):  
Francieli Gonçalves Franceschini ◽  
Oscar Rubem Klegues Montedo ◽  
Sabrina Arcaro ◽  
Carlos Pérez Bergmann
Keyword(s):  
Aluminum Alloy ◽  
Coating Properties ◽  
Alloy Substrate ◽  
Substrate Coupling

Enhancement of Tribological Performance of 6061 Aluminum Alloy by Second Phase Hardening via Friction Stir Processing

2011 ◽  
Author(s):  
C. Lorenzo-Martin ◽  
O. Ajayi ◽  
G. Fenske
Keyword(s):  
Aluminum Alloy ◽  
Friction Stir Processing ◽  
Performance Enhancement ◽  
Base Material ◽  
Bearing Steel ◽  
Tribological Performance ◽  
Second Phase ◽  
Phase Hardening ◽  
Friction Stir ◽  
B4c Particle

The properties of metallic alloys can be substantial modified by the addition of a second phase particles. This is especially noticeable when hard particles are incorporated in a relatively soft matrix, often resulting in improved mechanical and tribological performance. This paper presents the results of our study on mechanical and tribological performance enhancement of 6061 Aluminum alloys by incorporation of B4C particle via Friction stir processing (FSP). Unidirectional ball on flat friction and wear tests were conducted with a base material, friction stir processed 6061-Al and 6061-Al doped with B4C particles via FSP against 52100 bearing steel balls under dry sliding conditions. The incorporation of particles not only reduced friction by 30% but also reduced wear by 2 orders of magnitude compared to unprocessed base and FSP material without particles incorporation. FSP alone without particles addition did not have a significant effect on the tribological behavior of the tested aluminum alloy.

Tribological performance of A206 aluminum alloy containing silica sand particles

2010 ◽  
Vol 43 (1-2) ◽  
pp. 455-466 ◽  
Author(s):  
P.K. Rohatgi ◽  
B.F. Schultz ◽  
A. Daoud ◽  
W.W. Zhang
Keyword(s):  
Aluminum Alloy ◽  
Tribological Performance ◽  
Silica Sand ◽  
Sand Particles
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