TY - JOUR
T1 - Temperature dependence of the extreme-pressure behavior of CuO and TiO2 nanoparticle additives in metal-forming polymeric lubricants
AU - Peña-Parás, Laura
AU - García-Pineda, Patricio
AU - Maldonado-Cortés, Demófilo
AU - Garza, Gerardo Tadeo
AU - Taha-Tijerina, Jaime
N1 - Funding Information:
Authors acknowledge the support from UDEM VIAC grant 10T-PR098-12.
Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2017/1/1
Y1 - 2017/1/1
N2 - The effect of temperature on the extreme-pressure (EP) properties of CuO and TiO2nanoparticle-filled polymeric lubricants for metal-forming processes. was studied. EP measurements were performed with a four-ball tribotester according to the ITeE-PIB Polish method for testing lubricants under scuffing conditions. Tests were run at 25, 40, 60 and 75�C to further decrease the lubricant film thickness and determine the effect on the load-carrying capacity and the tribological mechanisms of nanoparticles. The tribological mechanisms of nanoparticles is studied using energy dispersive spectrometry. Results indicate that nanoparticle additives increase the load-carrying capacity of the polymeric lubricant at all concentrations up to 60�C attributed to a mending effect and a reduction in the area of contact of moving surfaces; at 75�C, the improvement is lowered due to nanoparticle re-agglomeration. The best results are found with TiO2nanoparticles due to their smaller size compared to CuO.
AB - The effect of temperature on the extreme-pressure (EP) properties of CuO and TiO2nanoparticle-filled polymeric lubricants for metal-forming processes. was studied. EP measurements were performed with a four-ball tribotester according to the ITeE-PIB Polish method for testing lubricants under scuffing conditions. Tests were run at 25, 40, 60 and 75�C to further decrease the lubricant film thickness and determine the effect on the load-carrying capacity and the tribological mechanisms of nanoparticles. The tribological mechanisms of nanoparticles is studied using energy dispersive spectrometry. Results indicate that nanoparticle additives increase the load-carrying capacity of the polymeric lubricant at all concentrations up to 60�C attributed to a mending effect and a reduction in the area of contact of moving surfaces; at 75�C, the improvement is lowered due to nanoparticle re-agglomeration. The best results are found with TiO2nanoparticles due to their smaller size compared to CuO.
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U2 - 10.1108/ILT-02-2016-0023
DO - 10.1108/ILT-02-2016-0023
M3 - Article
VL - 69
SP - 730
EP - 737
JO - Industrial Lubrication and Tribology
JF - Industrial Lubrication and Tribology
SN - 0036-8792
IS - 5
ER -