Tribology of Aqueous Thiomolybdate and Thiotungstate Additives in Low-Pressure Contacts

Chiñas‐Castillo, Fernando; Lara‐Romero, Javier; Alonso-Núñez, G.; López-Velázquez, Andrés

doi:10.1080/10402004.2012.759303

Cited by 3 publications

(2 citation statements)

References 36 publications

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“…We have also tested this salt to lubricate AISI 304 stainless steel in a flat‐on‐flat contact at low pressure conditions. In this case, the formation of MoS 2 and FeS played an important role in reducing wear 29 …”

Section: Introductionmentioning

confidence: 98%

“…In this case, the formation of MoS 2 and FeS played an important role in reducing wear. 29 In this work, the authors present the tribological performance of an ATM salt as a water-soluble lubricant additive for steel-steel contact on a pin-on-disk tribometer. We explain the mechanism of film formation, the composition of resulting films formed in the contact and discuss their role in reducing the coefficient of friction and wear.…”

Section: Introductionmentioning

confidence: 99%

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Tribological performance of ammonium thiomolybdate as water‐soluble lubricant additive for steel‐steel contacts

Lara‐Romero

Rangel

López‐Tinoco

et al. 2022

Lubrication Science

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The friction and wear reducing properties of ammonium thiomolybdate as a water-soluble lubricant additive were evaluated using a pin-on-disck tribometer on a steel-steel contact. The tribological performance of aqueous solutions of thiomolybdate prepared at concentrations between 0.1 and 0.3 wt% Mo were evaluated at the same load (10 N), entrainment speed, sliding distance and temperature. Although there is a reduction of friction and wear compared with pure water, a significant difference is observed, depending on the additive concentration. SEM/EDAX and Raman spectroscopy analyses of the wear tracks of specimens tested at concentrations below 0.3 wt% Mo reveal the formation of FeS which is responsible for gradually reducing the coefficient of friction from values between 0.30 and 0.5 down to $0.11. At 0.3 wt% Mo, the analyses indicated the formation of a MoS 2 which keeps the coefficient of friction in $0.05, the lowest recorded value.

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Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Tribological performance of ammonium thiomolybdate as water‐soluble lubricant additive for steel‐steel contacts

Lara‐Romero

Rangel

López‐Tinoco

et al. 2022

Lubrication Science

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Aqueous Lubrication with Polyelectrolytes: Toward Engineering Applications

Lee¹

2017

Surfactants in Tribology, Volume 5

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Influence of Temperature on the Frictional Properties of Water-Lubricated Surfaces

Lee

Røn

2014

Lubricants

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Abstract:The influence of temperature on the lubricating properties of neat water for tribopairs with varying bulk elasticity moduli and surface hydrophilicity, namely hard-hydrophobic interface (h-HB), hard-hydrophilic interface (h-HL), soft-hydrophobic interface (s-HB), and soft-hydrophilic interface (s-HL), has been investigated. With increasing temperature, the coefficients of friction generally increased due to the decreasing viscosity of water. This change was more clearly manifested from soft interfaces for more feasible formation of lubricating films. Nevertheless, dominant lubrication mechanism appears to be boundary and mixed lubrication even for soft interfaces at all speeds (up to 1200 mm/s) and temperatures (1 to 90 °C) investigated. The results from this study are expected to provide a reference to explore the temperature-dependent tribological behavior of more complex aqueous lubricants, e.g., those involving various additives, for a variety of tribosystems.

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Tribology of Aqueous Thiomolybdate and Thiotungstate Additives in Low-Pressure Contacts

Cited by 3 publications

References 36 publications

Tribological performance of ammonium thiomolybdate as water‐soluble lubricant additive for steel‐steel contacts

Tribological performance of ammonium thiomolybdate as water‐soluble lubricant additive for steel‐steel contacts

Aqueous Lubrication with Polyelectrolytes: Toward Engineering Applications

Influence of Temperature on the Frictional Properties of Water-Lubricated Surfaces

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