In situ real time nanowear testing method of optical functional thin films

Poirié, Thomas; Schmitt, Thomas; Bousser, Étienne; Martinů, L.; Klemberg-Sapieha, Jolanta E.

doi:10.1016/j.triboint.2015.10.020

Cited by 5 publications

(1 citation statement)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In some cases, nanoindenters have been used to perform reciprocating sliding and thereby examine layer-by-layer removal of coating materials. [33] As with standard AFM, the availability of only a few tip materials is a major limitation.…”

Section: Introductionmentioning

confidence: 99%

In situ Growth and Characterization of Lubricious Carbon-Based Films Using Colloidal Probe Microscopy

et al. 2023

View full text Add to dashboard Cite

Silicon oxide-doped hydrogenated amorphous carbon (a-C:H:Si:O) is an important form of diamond like carbon (DLC) for tribological applications, primarily because of its enhanced thermal stability and reduced dependence of friction on environmental humidity. As with other DLCs, its mechanisms of lubrication are still an active area of research, though it is now known that surface passivation and tribo lm growth are important factors. In this study, tribo lm formation for a-C:H:Si:O is examined at the microscale by using steel colloid atomic force microscopy probes as the sliding counterface. This approach provides some inherent advantages over macroscale tribology experiments, namely that the tribo lm thickness and stiffness can be tracked in situ and correlated directly with the friction response. The results of these experiments show that the tribo lm grows rapidly on the steel colloid following a period of counterface wear and high friction. The friction drops more than 80% upon nucleation of the tribo lm, which is attributed to a decrease of more than 80% in adhesion combined with a decrease in the estimated interfacial shear strength of at least 65%. Approximately 80% of the friction decrease occurs before the tribo lm reaches a thickness of 2 nm, suggesting that only the near-surface properties of the tribo lm provide the needed functionality for its effective lubrication mechanisms.

show abstract

Section: Introductionmentioning

confidence: 99%