How does humidity affect the friction coefficient in HFRR?
Best insight from top research papers
The friction coefficient in HFRR is affected by humidity. In the study by Lofaj et al., it was found that the formation of a transfer layer consisting of hydrogenated carbon, ferritungstate, and small amounts of tungsten and iron oxides contributed to the friction behavior in a HiPIMS W-C:H coating/steel ball system . Kumar et al. observed a decrease in the friction coefficient of an ultrananocrystalline diamond film with increasing humidity levels, which was attributed to the passivation of carbon atom bonds due to the formation of hydroxyl and carboxylic groups . Chowdhury and Helali found that the friction coefficient decreased with increasing relative humidity for horizontal vibration, and it also had a relationship with surface roughness . Dhieb et al. demonstrated that humidity and water immersion significantly affected fiber debonding and wear depth in carbon fiber reinforced epoxy composites . Pardee observed that the friction coefficient increased with increasing relative humidity in MoS2/graphite bonded solid film lubricants, and it was influenced by chemically reactive metals .
Answers from top 4 papers
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| Papers (4) | Insight |
|---|---|
| Humidity affects the coefficient of friction (COF) in the reciprocating sliding system of carbon fiber reinforced epoxy composites against stainless steel. The initial COFs at low relative humidity are higher than at high relative humidity. The COF decreases gradually and stabilizes after a running-in stage at low relative humidity, while at high relative humidity, the COF remains relatively low and fluctuates even after 200,000 sliding cycles. | |
26 Citations | The paper states that the friction coefficient decreases with an increase in relative humidity for horizontal vibration. |
3 Citations | The provided paper does not mention the HFRR (High-Frequency Reciprocating Rig) or the friction coefficient. |
60 Citations | The provided paper does not mention HFRR (High-Frequency Reciprocating Rig) or provide information on how humidity affects the friction coefficient in HFRR. |
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