Influence of Environmental Humidity on the Wear and Friction of a Silica/Silicon Tribopair Lubricated with a Hydrophilic Ionic Liquid

ACS Applied Materials & Interfaces
Andrea ArcifaNicholas D Spencer

Abstract

In this study, the tribological behavior of silica/silicon surfaces lubricated with the ionic liquid 1-ethyl-3-methylimidazolium ethylsulfate ([EMIM] EtSO4) was investigated. Tests were carried out in the presence of either humid air (45-55% relative humidity) or in a nitrogen atmosphere, and the results were compared with those obtained using pure water as a lubricant. The cross-sectional analysis of the contact area performed by focused-ion-beam scanning electron microscopy indicated the presence of cracks in the subsurface region, showing that brittle fracture contributed to wear. Sliding promoted the formation of a third body, the presence of which was indicated by optical and secondary electron microscopy. X-ray photoelectron spectroscopy showed that the third body was mostly composed of silicon oxides. The accumulation of the debris was controlled by the presence of water: in the presence of a nitrogen atmosphere, particles were trapped between the sliding surfaces, whereas in the case of humid air, the debris was progressively removed from the contact. Notably, the presence of trapped particles was associated with higher values of wear coefficients of both disks and pins. In addition, a lower roughness was observed along...Continue Reading

References

Sep 21, 2002·Chemical Communications : Chem Comm·C YeL Yu
Aug 25, 2009·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·María-Dolores BermúdezFrancisco-José Carrión
Apr 10, 2010·Physical Chemistry Chemical Physics : PCCP·Kazuhide UenoKazue Kurihara
May 17, 2011·Chemical Communications : Chem Comm·Susan PerkinNitya Nand Gosvami
Jan 29, 2013·Nature Nanotechnology·Tevis D B Jacobs, Robert W Carpick
Aug 15, 2013·Physical Chemistry Chemical Physics : PCCP·Alexander M SmithSusan Perkin
Jun 13, 2014·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Judith HothRoland Bennewitz
May 23, 2015·Langmuir : the ACS Journal of Surfaces and Colloids·Kenichi SakaiHideki Sakai
Jan 2, 2014·The Journal of Physical Chemistry Letters·R M Espinosa-MarzalN D Spencer

❮ Previous
Next ❯

Citations

Dec 30, 2016·Chemical Reviews·Shiguo ZhangYouquan Deng
Oct 20, 2017·Beilstein Journal of Nanotechnology·Patrícia M AmorimBenilde Saramago
Jul 3, 2020·Nanoscale·Clodomiro Cafolla, Kislon Voïtchovsky
Nov 3, 2020·Chemical Society Reviews·Meirong CaiFeng Zhou
Apr 16, 2020·Chemical Reviews·Yong-Lei WangMichael D Fayer

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.