Surface Modification of MoS2 Nanosheets as Effective Lubricant Additives for Reducing Friction and Wear in Poly-α-olefin

2018 ◽  
Vol 57 (23) ◽  
pp. 8105-8114 ◽  
Author(s):  
Xinhu Wu ◽  
Kuiliang Gong ◽  
Gaiqing Zhao ◽  
Wenjing Lou ◽  
Xiaobo Wang ◽  
...  
Keyword(s):  
Surface Modification ◽  
Friction And Wear ◽  
Lubricant Additives ◽  
Mos2 Nanosheets ◽  
Effective Lubricant

Tribological Properties of Ammonium Protic Ionic Liquids As Additives in Polyalphaolefin for Steel-Steel Contact

2019 ◽  
Author(s):  
Hong Guo ◽  
Patricia Iglesias
Keyword(s):  
Ionic Liquids ◽  
Friction And Wear ◽  
Tribological Behavior ◽  
Lubricant Additives ◽  
Protic Ionic Liquids ◽  
Wear Performance ◽  
Different Temperatures ◽  
Effective Lubricant ◽  
Higher Temperature ◽  
Brønsted Base

Abstract Around 23% of the world’s energy consumption results from rubbing contacts, in which 20% is used to overcome friction and 3% is due to wear and the consequent failure. The implementation of lubricants and effective lubricant additives are indispensable to reduce friction and wear of rubbing materials. Protic Ionic Liquids (PILs), which are easily obtained by proton transfer from a Brønsted acid to a Brønsted base, have shown great potential to be used as lubricants due to their structures and tunable properties. In this study, two kinds of novel PILs, bis(2-hydroxyethylammonium) succinate (DSu) and tri-[bis(2-hydroxyethylammonium)] citrate (DCi), were synthesized and tested as lubricant additives. The tribological behavior of the two PILs is studied as additives in 1 wt. % to a base synthetic lubricant (PAO) for steel-steel contact under different temperatures (room temperature and 100°C) and normal loads (3 N and 4 N) using a ball-on-flat reciprocating tribometer. When 1 wt. % of any PILs is added into PAO, friction is reduced compared to that with neat PAO at all temperatures and loads studied, and good anti-wear performance is also obtained under the higher temperature studied. Particularly, 1 wt. % DCi +PAO shows the best high-temperature tribological behavior under 4N, with friction and wear reductions of 33% and 35%, respectively.

scholarly journals Enhanced photoelectrochemical and photocatalytic activities of CdS nanowires by surface modification with MoS2 nanosheets

2018 ◽  
Vol 61 (6) ◽  
pp. 839-850 ◽  
Author(s):  
Hongmei Wang ◽  
Sara Bonabi Naghadeh ◽  
Chunhe Li ◽  
Lu Ying ◽  
A’Lester Allen ◽  
...  
Keyword(s):  
Surface Modification ◽  
Mos2 Nanosheets ◽  
Photocatalytic Activities ◽  
Cds Nanowires

Carbon nanotubes of oil fly ash integrated with ultrathin CuO nanosheets as effective lubricant additives

2017 ◽  
Vol 78 ◽  
pp. 97-104 ◽  
Author(s):  
Numan Salah ◽  
Ahmed Alshahrie ◽  
M.Sh. Abdel-wahab ◽  
Najlaa D. Alharbi ◽  
Zishan H. Khan
Keyword(s):  
Carbon Nanotubes ◽  
Fly Ash ◽  
Lubricant Additives ◽  
Effective Lubricant ◽  
Cuo Nanosheets ◽  
Oil Fly Ash

Surface Modification of Machine Parts Made of Iron–Carbon Alloys Operating under Conditions of Friction and Wear

2018 ◽  
Vol 39 (3) ◽  
pp. 227-231
Author(s):  
L. A. Timofeeva ◽  
S. S. Timofeev ◽  
A. Y. Dyomin ◽  
I. I. Fedchenko ◽  
D. G. Voskoboynikov
Keyword(s):  
Surface Modification ◽  
Friction And Wear ◽  
Machine Parts

Tribological properties of nano cellulose fatty acid esters as ecofriendly and effective lubricant additives

Cellulose ◽  
2018 ◽  
Vol 25 (5) ◽  
pp. 3091-3103 ◽  
Author(s):  
Yanjuan Zhang ◽  
Liping Wei ◽  
Huayu Hu ◽  
Zengyan Zhao ◽  
Zuqiang Huang ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Tribological Properties ◽  
Lubricant Additives ◽  
Fatty Acid Esters ◽  
Nano Cellulose ◽  
Effective Lubricant ◽  
Acid Esters

scholarly journals Effect of Ionicity of Three Protic Ionic Liquids as Neat Lubricants and Lubricant Additives to a Biolubricant

Coatings ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 713 ◽  
Author(s):  
Hong Guo ◽  
Angela Rina Adukure ◽  
Patricia Iglesias
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Friction And Wear ◽  
Cost Effective ◽  
Lubricant Additive ◽  
Lubricant Additives ◽  
Environmental Damage ◽  
Protic Ionic Liquids ◽  
Protic Ionic Liquid ◽  
Wear Process

Friction and wear of sliding surfaces are responsible for important energy losses and negative environmental effects. The use of environmentally friendly and cost-effective protic ionic liquids as neat lubricants and lubricant additives has the potential to increase the efficiency and durability of mechanical components without increasing the environmental damage. In this work, three halogen-free protic ionic liquids with increasing extent of ionicity, 2-hydroxyethylammonium 2-ethylhexanoate, 2-hydroxymethylammonium 2-ethylhexancate, and 2-hydroxydimethylammonium 2-ethylhexanoate, were synthesized and studied as neat lubricants and additives to a biodegradable oil in a steel–steel contact. The results show that the use of any protic ionic liquid as a neat lubricant or lubricant additive reduced friction and wear with respect to the biodegradable oil. The ionic liquid with the lowest ionicity reached the highest wear reduction. The one possessing the highest ionicity presented the poorest friction and wear behaviors as a neat lubricant, probably due to the more ionic nature of this liquid, which promoted tribocorrosion reactions on the steel surface. This ionic liquid performed better as an additive, showing that a small addition of this liquid in a biodegradable oil is enough to form protective layers on steel surfaces. However, it is not enough to accelerate the wear process with detrimental tribocorrosion reactions.

Study on the friction characteristics of 304 steel with composite surface modification

2017 ◽  
Vol 69 (2) ◽  
pp. 248-258 ◽  
Author(s):  
Wengang Chen ◽  
Xueyuan Liu ◽  
Lili Zheng
Keyword(s):  
Surface Modification ◽  
Friction And Wear ◽  
Steel Surface ◽  
Testing Machine ◽  
Wear Testing ◽  
Tribological Characteristics ◽  
Textured Surface ◽  
Content Type ◽  
Good Basis ◽  
Modified Surface

Purpose This paper aims to clarify the friction properties of 304 steel surface modification. The surface modification includes laser texturing processing and nitriding treatment on 304 steel surface, and then the friction properties’ test was conducted on different friction directions and different upper test samples by using microfriction and wear testing machine. Design/methodology/approach The diameter and spacing of 100-, 150-, 200-, 300-μm pit array on the surface of 304 steel were calculated using a M-DPSS-50 semiconductor laser device. Then, the textured surface was nitriding-treated using a nitriding salt bath device. The chemical composition, surface morphology and surface microhardness of the composite-modified surface were measured by X-ray diffraction and by using an optical microscope and a microhardness tester. The tribological characteristics of the composite-modified surface were tested by MRTR microcomputer-controlled multifunctional friction and wear testing machine. Findings The result showed that a rule pit texture surface was obtained by the texture processing. The microhardness of nitriding treatment surface reached 574.27HV0.1, which significantly higher than 222.58HV0.1 of 304 steel. The composite-modified surface has excellent anti-friction and wear resistance properties when the upper specimen was GCr15 steel and ZrO2, respectively. The composite-modified surface has excellent anti-friction and anti-wear properties after long time friction under different angles. However, the friction coefficient and wear morphology of the friction pairs are not affected by the friction angle. Research limitations/implications Because of the chosen research approach, the research results may lack generalizability. Therefore, researchers are encouraged to test the proposed propositions further. Practical implications The paper conducted a systematic study of the tribological characteristics of 304 steel composite modification surface and provided a good basis for the extensive application of 304 steel. Social implications The study provides a good basis for the extensive application of 304 steel. Originality/value This paper fulfils an identified need to study the extensive application of 304 steel.

Sign in / Sign up

Export Citation Format

Share Document