Thermal transport and tribological properties of nanogreases for metal-mechanic applications

Peña-Parás, Laura; Taha‐Tijerina, Jaime; García, A.; Maldonado, D.; Najera, Axel Cerna; Cantú, P.; Ortiz, D.

doi:10.1016/j.wear.2015.01.062

Cited by 34 publications

(10 citation statements)

References 37 publications

(38 reference statements)

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“…In Figure 6 results showed an increasing corrosion protection rate up to 0.5 wt. %, after which a reverse trend was present, most likely due to filler agglomeration, particularly for TiO 2 , as has been observed from previous research and work in our group (Peña et al, 2014(Peña et al, , 2015(Peña et al, , 2016. In general, this nanoparticle showed better performance compared to Zn.…”

Section: Tribological Evaluationsupporting

confidence: 75%

Synergistic effect of nanocoatings for corrosion and wear protection of steel surfaces

Taha‐Tijerina

Peña-Parás

Sánchez-Fernández

et al. 2019

iit

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The purpose of this paper is to evaluate the corrosion and wear protection of a steel substrate by epoxy vinyl ester nanocomposite coatings with Zn and TiO2 nanoparticle fillers. Steel substrates were coated with epoxy vinyl ester nanocomposites, varying Zn and TiO2 nanofiller concentrations and combinations of both nanoparticles. Corrosion resistance was evaluated by salt spray fog test during 480h, according to ASTM B-117. The degree of damage was obtained quantitatively by measuring the enhancement in corroded area compared to the scribe mark. Tribological evaluation was performed with a ball-on-disk tribotester, according to ASTM G-99. Results showed that the combination of Zn and TiO2 nanofillers in an epoxy vinyl ester coating provide a synergistic effect, enhancing corrosion protection due to their combined corrosion and tribological reducing mechanisms.

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Section: Tribological Evaluationsupporting

confidence: 75%

Synergistic effect of nanocoatings for corrosion and wear protection of steel surfaces

Taha‐Tijerina

Peña-Parás

Sánchez-Fernández

et al. 2019

iit

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“…This tribological mechanism proposed by Ni and Sinnot [94] is particularly found for fullerenes such as carbon nanotubes (CNTs) and occurs when these nanostructures are flattened under high pressure conditions and move like a "tank-belt" between surfaces [57,94,95], as depicted in Fig. 4g.…”

Section: Tank-beltmentioning

confidence: 86%

Eco-Friendly Nanoparticle Additives for Lubricants and Their Tribological Characterization

Peña-Parás

Maldonado-Cortés

Taha‐Tijerina

2017

Handbook of Ecomaterials

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Worldwide manufacturing, as well as the transportation industry, is greatly affected by the rising costs of energy, maintenance, replacement of expensive and crucial components, and environmental legislations. Diverse solutions have been proposed to meet these challenges: more efficient processes that minimize energy consumption, weight reductions, as well as achieving longer maintenance periods and longer replacement times for tooling and components. In order to find a solution for these issues, nanoparticles (NPs) have been used as additives in conventional lubricants decreasing the coefficient of friction (COF)

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“…In this tribotest, the nanofluids were subjected to a linearly increasing load from 0 to 7200 N, with a rotational speed of 500 rpms for 18 s (Table 2), where 12.7 mm diameter spheres of AISI 52,100 steel with 60 HRC were used [45]. The Institute for Sustainable Technologies -National Research Institute(ITEePib) Polish technique was selected due to the sensitivity to extreme pressure lubricants [1,[46][47][48][49], as well as being less time consuming. In this study, when the frictional torque reached 10 N m, nanofluid seizure occurred and the nanofluid-"protective" film was destroyed; the load at this point corresponded to the seizure load (P oz ).…”

Section: Tribological Experimentationmentioning

confidence: 99%

Tribological and Thermal Transport of Ag-Vegetable Nanofluids Prepared by Laser Ablation

et al. 2020

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Lubricants and fluids are critical for metal-mechanic manufacturing operations as they reduce the friction and wear of tooling and components, and serve as coolants to dissipate the heat generated in these operations. The proper application of these materials improves machine operative life and tooling, and decreases cost, energy, and time consumption for maintenance, damage, repairs, or the need to exchange pieces/components within the machinery. Natural or vegetable-based lubricants have emerged as a substitute for mineral oils, which harm the environment due to their low biodegradability and have negative effects on human health (e.g., causing skin/respiratory diseases). Thus, finding biocompatible and efficient lubricants has become a technology objective for researchers and industry. This study evaluates soybean-, corn-, and sunflower-based lubricants reinforced with silver (Ag) nanostructures by a pulsed laser ablation process. Thermal and tribological evaluations were performed with varying Ag contents, and temperature-dependent behavior was observed. Thermal conductivity improvements were observed for all nanofluids as the temperature and Ag concentration increased (between 15% and 24%). A maximum improvement of 24% at 50 °C and 10 min exposure time of the pulsed laser ablation process for soybean oil was observed. The tribological evaluations showed improvements in the load-carrying capacity of the vegetable oils, i.e., an increase from 6% to 24% compared to conventional materials. The coefficient of friction performance also showed enhancements with Ag concentrations between 4% and 15%.

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Thermal transport and tribological properties of nanogreases for metal-mechanic applications

Cited by 34 publications

References 37 publications

Synergistic effect of nanocoatings for corrosion and wear protection of steel surfaces

Synergistic effect of nanocoatings for corrosion and wear protection of steel surfaces

Eco-Friendly Nanoparticle Additives for Lubricants and Their Tribological Characterization

Tribological and Thermal Transport of Ag-Vegetable Nanofluids Prepared by Laser Ablation

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