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Understanding the tribological impacts of alkali element on lubrication of binary borate melt

Journal Article


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Abstract


  • Melt lubricants have been regarded as an effective class to deliver lubrication on moving mechanical contacts at extreme temperatures. Among the elementary constituents, alkali elements play a critical role in governing the physical-chemical characteristics of the lubricant despite the obscurity regarding their intrinsic roles on the rubbing interfaces. The present study attempts to unfold the effects of sodium on the tribological responses of mating steel pair under borate melt lubrication. It has been found that the involvement of Na inspires a total reversal in lubricating potentials of the lone B2O3melt manifested by remarkable friction reduction, wear inhibition and prolonged load-bearing capacity. These exceptional performances are attributed to the accretion of nanothin Na layers on the contact interfaces. The interfacial occurrences are interpreted from a physico-chemistry perspective while the influences of surface microstructure are also discussed in detail. Multiple characterizations are employed to thoroughly examine the sliding interfaces in multi-dimensions including Scanning Electron Microscopy (SEM), Scanning Transmission Electron Microscopy (STEM) and Atomic Force Microscopy (AFM). In addition, chemical fingerprints of relevant elements are determined by Energy Dispersive Spectroscopy (EDS) and Electron Loss Energy Spectroscopy (EELS).

Publication Date


  • 2018

Citation


  • Tran, B. H., Tieu, K., Wan, S., Zhu, H., Cui, S. & Wang, L. (2018). Understanding the tribological impacts of alkali element on lubrication of binary borate melt. RSC Advances: an international journal to further the chemical sciences, 8 (51), 28847-28860.

Scopus Eid


  • 2-s2.0-85052156211

Ro Full-text Url


  • https://ro.uow.edu.au/cgi/viewcontent.cgi?article=2734&context=eispapers1

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers1/1732

Number Of Pages


  • 13

Start Page


  • 28847

End Page


  • 28860

Volume


  • 8

Issue


  • 51

Place Of Publication


  • United Kingdom

Abstract


  • Melt lubricants have been regarded as an effective class to deliver lubrication on moving mechanical contacts at extreme temperatures. Among the elementary constituents, alkali elements play a critical role in governing the physical-chemical characteristics of the lubricant despite the obscurity regarding their intrinsic roles on the rubbing interfaces. The present study attempts to unfold the effects of sodium on the tribological responses of mating steel pair under borate melt lubrication. It has been found that the involvement of Na inspires a total reversal in lubricating potentials of the lone B2O3melt manifested by remarkable friction reduction, wear inhibition and prolonged load-bearing capacity. These exceptional performances are attributed to the accretion of nanothin Na layers on the contact interfaces. The interfacial occurrences are interpreted from a physico-chemistry perspective while the influences of surface microstructure are also discussed in detail. Multiple characterizations are employed to thoroughly examine the sliding interfaces in multi-dimensions including Scanning Electron Microscopy (SEM), Scanning Transmission Electron Microscopy (STEM) and Atomic Force Microscopy (AFM). In addition, chemical fingerprints of relevant elements are determined by Energy Dispersive Spectroscopy (EDS) and Electron Loss Energy Spectroscopy (EELS).

Publication Date


  • 2018

Citation


  • Tran, B. H., Tieu, K., Wan, S., Zhu, H., Cui, S. & Wang, L. (2018). Understanding the tribological impacts of alkali element on lubrication of binary borate melt. RSC Advances: an international journal to further the chemical sciences, 8 (51), 28847-28860.

Scopus Eid


  • 2-s2.0-85052156211

Ro Full-text Url


  • https://ro.uow.edu.au/cgi/viewcontent.cgi?article=2734&context=eispapers1

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers1/1732

Number Of Pages


  • 13

Start Page


  • 28847

End Page


  • 28860

Volume


  • 8

Issue


  • 51

Place Of Publication


  • United Kingdom