In situ measurements of lubricant temperature and pressure at a sliding contact

C. U.Amanda Cheong; Peter C. Stair

doi:10.1021/jp070928e

In situ measurements of lubricant temperature and pressure at a sliding contact

C. U.Amanda Cheong, Peter C. Stair^*

^*Corresponding author for this work

Chemistry

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

The in situ temperature and pressure of silicone (polydimethylsiloxane) grease at a ball-on-flat sliding contact was successfully measured by UV Raman spectroscopy. The ratio of Stokes and anti-Stokes Raman peaks from the 490 cm^-1 Si-O-Si bending mode were used to calculate the grease temperature at 10 and 20 cm/s sliding speeds. The peak shifts detected during sliding were used to calculate the lubricant pressure. The results show that the silicone temperature at the contact area increased with the sliding speed. Under a stationary contact, the silicone temperature was measured to be 22°C. At 10 and 20 cm/s sliding speeds, the silicone temperatures were measured to be 45 and 62°C, respectively. The pressure, on the other hand, did not depend on the sliding speed and remained at 0.6 GPa. These results were found to be consistent with calculations based on Hertzian contact theory.

Original language	English (US)
Pages (from-to)	11314-11319
Number of pages	6
Journal	Journal of Physical Chemistry C
Volume	111
Issue number	30
DOIs	https://doi.org/10.1021/jp070928e
State	Published - Aug 2 2007

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
General Energy
Physical and Theoretical Chemistry
Surfaces, Coatings and Films

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title = "In situ measurements of lubricant temperature and pressure at a sliding contact",

abstract = "The in situ temperature and pressure of silicone (polydimethylsiloxane) grease at a ball-on-flat sliding contact was successfully measured by UV Raman spectroscopy. The ratio of Stokes and anti-Stokes Raman peaks from the 490 cm-1 Si-O-Si bending mode were used to calculate the grease temperature at 10 and 20 cm/s sliding speeds. The peak shifts detected during sliding were used to calculate the lubricant pressure. The results show that the silicone temperature at the contact area increased with the sliding speed. Under a stationary contact, the silicone temperature was measured to be 22°C. At 10 and 20 cm/s sliding speeds, the silicone temperatures were measured to be 45 and 62°C, respectively. The pressure, on the other hand, did not depend on the sliding speed and remained at 0.6 GPa. These results were found to be consistent with calculations based on Hertzian contact theory.",

author = "Cheong, {C. U.Amanda} and Stair, {Peter C.}",

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doi = "10.1021/jp070928e",

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volume = "111",

pages = "11314--11319",

journal = "Journal of Physical Chemistry C",

issn = "1932-7447",

publisher = "American Chemical Society",

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TY - JOUR

T1 - In situ measurements of lubricant temperature and pressure at a sliding contact

AU - Cheong, C. U.Amanda

AU - Stair, Peter C.

PY - 2007/8/2

Y1 - 2007/8/2

N2 - The in situ temperature and pressure of silicone (polydimethylsiloxane) grease at a ball-on-flat sliding contact was successfully measured by UV Raman spectroscopy. The ratio of Stokes and anti-Stokes Raman peaks from the 490 cm-1 Si-O-Si bending mode were used to calculate the grease temperature at 10 and 20 cm/s sliding speeds. The peak shifts detected during sliding were used to calculate the lubricant pressure. The results show that the silicone temperature at the contact area increased with the sliding speed. Under a stationary contact, the silicone temperature was measured to be 22°C. At 10 and 20 cm/s sliding speeds, the silicone temperatures were measured to be 45 and 62°C, respectively. The pressure, on the other hand, did not depend on the sliding speed and remained at 0.6 GPa. These results were found to be consistent with calculations based on Hertzian contact theory.

AB - The in situ temperature and pressure of silicone (polydimethylsiloxane) grease at a ball-on-flat sliding contact was successfully measured by UV Raman spectroscopy. The ratio of Stokes and anti-Stokes Raman peaks from the 490 cm-1 Si-O-Si bending mode were used to calculate the grease temperature at 10 and 20 cm/s sliding speeds. The peak shifts detected during sliding were used to calculate the lubricant pressure. The results show that the silicone temperature at the contact area increased with the sliding speed. Under a stationary contact, the silicone temperature was measured to be 22°C. At 10 and 20 cm/s sliding speeds, the silicone temperatures were measured to be 45 and 62°C, respectively. The pressure, on the other hand, did not depend on the sliding speed and remained at 0.6 GPa. These results were found to be consistent with calculations based on Hertzian contact theory.

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JF - Journal of Physical Chemistry C

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In situ measurements of lubricant temperature and pressure at a sliding contact

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