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Title: Possible Origin of D- and G-band Features in Raman Spectra of Tribofilms
In the Raman analysis of tribofilms produced from organic precursors, the D- and G-band features are often observed, which resemble the characteristic bands of diamond-like carbon (DLC), amorphous carbon (a-C), or graphitic materials. This study reports experimental evidence that the D- and G-bands features in the Raman spectra of tribofilms could be generated by photochemical degradation of triboproducts due to the focused irradiation of laser beam during the Raman analysis, indicating that they are not unique to the genuine structure of the tribofilm produced via friction. This finding suggests that other complementary and non-destructive characterization is required to determine whether DLC, a-C, or graphitic species are produced tribochemically by frictional shear.  more » « less
Award ID(s):
2038494 2038499
NSF-PAR ID:
10478345
Author(s) / Creator(s):
; ; ; ; ; ; ; ;
Publisher / Repository:
Springer
Date Published:
Journal Name:
Tribology Letters
Volume:
71
Issue:
2
ISSN:
1023-8883
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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