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Volume 2
Issue 4
10.3390/lubricants2040223
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Communication

Detection of Elemental Composition of Lubricating Grease Using Laser Induced Breakdown Spectroscopy

by
Cherry Dhiman
1,*,
Martha N. Reddy
2,
Kamal Gulati
2 and
Mohd. Shahid Khan
1
1
Laser Spectroscopy Lab, Department of Physics, Jamia Millia Islamia, New Delhi-110025, India
2
Laser Science of Technology Center, Defence Research and Organisation, Metcalfe House, New Delhi-110054, India
*
Author to whom correspondence should be addressed.
Lubricants 2014, 2(4), 223-236; https://doi.org/10.3390/lubricants2040223
Submission received: 9 September 2014 / Revised: 14 October 2014 / Accepted: 26 November 2014 / Published: 18 December 2014
(This article belongs to the Special Issue Lubricating Greases)
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Abstract

The elemental composition of lubricating soft grease used in rail engines are studied using laser induced breakdown spectroscopy (LIBS) technique. LIBS spectra of fresh, partially used and fully used grease samples are recorded using time-gated ICCD spectrometer for verification of compositional degradation of the used grease. LIBS spectra of grease samples are analyzed by comparing with emission spectra of elements published by NIST standard database. Many spectral lines of impurity elements like Fe, Cu, Ba, Mg, Mn, Ni, S, Zn, Si, Pb, Ti, Ca and Al present in the grease in ppm or ppb level in trace level concentrations are observed in excess in the used grease mainly due to wear and tear. On the other hand in fresh grease, spectral lines of Ca, Al and Na are observed predominantly.
Keywords: laser induced breakdown spectroscopy; ICCD detector; lubricating grease laser induced breakdown spectroscopy; ICCD detector; lubricating grease

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MDPI and ACS Style

Dhiman, C.; Reddy, M.N.; Gulati, K.; Khan, M.S. Detection of Elemental Composition of Lubricating Grease Using Laser Induced Breakdown Spectroscopy. Lubricants 2014, 2, 223-236. https://doi.org/10.3390/lubricants2040223

AMA Style

Dhiman C, Reddy MN, Gulati K, Khan MS. Detection of Elemental Composition of Lubricating Grease Using Laser Induced Breakdown Spectroscopy. Lubricants. 2014; 2(4):223-236. https://doi.org/10.3390/lubricants2040223

Chicago/Turabian Style

Dhiman, Cherry, Martha N. Reddy, Kamal Gulati, and Mohd. Shahid Khan. 2014. "Detection of Elemental Composition of Lubricating Grease Using Laser Induced Breakdown Spectroscopy" Lubricants 2, no. 4: 223-236. https://doi.org/10.3390/lubricants2040223

APA Style

Dhiman, C., Reddy, M. N., Gulati, K., & Khan, M. S. (2014). Detection of Elemental Composition of Lubricating Grease Using Laser Induced Breakdown Spectroscopy. Lubricants, 2(4), 223-236. https://doi.org/10.3390/lubricants2040223

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