Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Jorge H. O. Seabra"'
Publikováno v:
Lubricants, Vol 12, Iss 3, p 87 (2024)
The aim of this research is studying the tribological performance of MoO3, MoS2, WS2 and WC nanoparticles as additives of PAO4. Pure sliding tribological tests were performed at 120 °C, finding outstanding friction and wear reductions in comparison
Externí odkaz:
https://doaj.org/article/11edb526eb134e63983bf548cb27705e
Autor:
José M. Liñeira del Río, Carlos M. C. G. Fernandes, David E. P. Gonçalves, Jorge H. O. Seabra
Publikováno v:
Lubricants, Vol 12, Iss 2, p 58 (2024)
This research shows the antifriction and antiwear synergies between a phosphonium ionic liquid (IL) and f-WS2 and f-SiO2 nanoparticles (NPs) as additives of a base oil with low viscosity (PAO6). Mass concentrations of 0.1 wt% nanoadditives and 1% IL
Externí odkaz:
https://doaj.org/article/221267ac075d422bbc417e59c7f200d3
Autor:
José M. Liñeira del Río, Enriqueta R. López, Manuel González Gómez, Susana Yáñez Vilar, Yolanda Piñeiro, José Rivas, David E. P. Gonçalves, Jorge H. O. Seabra, Josefa Fernández
Publikováno v:
Nanomaterials, Vol 10, Iss 4, p 683 (2020)
The main task of this work is to study the tribological performance of nanolubricants formed by trimethylolpropane trioleate (TMPTO) base oil with magnetic nanoparticles coated with oleic acid: Fe3O4 of two sizes 6.3 nm and 10 nm, and Nd alloy compou
Externí odkaz:
https://doaj.org/article/8372223bd7e9455da73432e52bc53fe3
Publikováno v:
Applied Sciences, Vol 10, Iss 4, p 1477 (2020)
The applications of biogenic lubricating greases to machine elements play important roles in the reduction of friction energy and minimizing wear in a tribological contact, as well as the prevention of environmental pollution. The aim of this work wa
Externí odkaz:
https://doaj.org/article/8534aad263d54d5b9e2a3ddb814f8005
Publikováno v:
Lubricants, Vol 6, Iss 3, p 82 (2018)
The film thickness of a ball-on-disc contact lubricated with four greases of different formulations was measured under different operating conditions until starvation. Two polymer-thickened greases and two lithium-thickened greases, formulated with b
Externí odkaz:
https://doaj.org/article/b5424785fd7340568c0d867f40662994
Publikováno v:
Lubricants, Vol 5, Iss 3, p 34 (2017)
The relationship between the film generation and the coefficient of friction in grease lubricated contacts was investigated. Ball-on-disc tests were performed under different operating conditions: entrainment speed, lubricant temperature and surface
Externí odkaz:
https://doaj.org/article/b6de6a83cbac484c95ef7c83000ad857
Autor:
Xavier Paredes, José M. Liñeira del Río, David E. P. Gonçalves, María J. G. Guimarey, María J. P. Comuñas, Jorge H. O. Seabra, Josefa Fernández
Publikováno v:
Industrial & Engineering Chemistry Research. 61:8346-8356
Publikováno v:
Journal of Tribology. 144
This work studies the power loss in a real axle box gear transmission under no-load operating conditions. The influence of the rotational speed and of the lubricant viscosity was considered. An experimental strategy was adopted in order to measure th