RT info:eu-repo/semantics/article
T1 Synthesis and exploration of the lubricating behavior of nanoparticulated Mo15S19 in linseed oil
A1 Alonso Fernández-Coppel, Ignacio
A1 Martín Ramos, Pablo
A1 Martín Gil, Jesús
A1 Pamies, Ramón
A1 Avella, Manuel
A1 Avilés, María
K1 Antifriction additives
K1 Linseed oil
K1 Lubricant
K1 Nanoparticles
K1 33 Ciencias Tecnológicas
AB Molybdenum chalcogenides present interesting properties beyond their superconducting critical temperatures and upper critical magnetic fields, making them suitable for potential applications in tribology, batteries, catalysis, or thermopower. In this study, Mo15S19 nanoparticles with an average diameter of 10 nm were synthesized via the reaction of ammonium molybdate with hydrochloric acid and elemental sulfur as reducers at 245 °C. The oxidation to MoO3 in air was efficiently avoided by using linseed oil as a reaction medium and dispersant. Scanning electron microscopy (SEM) micrographs of the as-prepared samples revealed the presence of few-micron-size aggregates, while transmission electron microscopy (TEM) characterization evidenced that the samples were polynanocrystalline with a high degree of homogeneity in size (standard deviation of 2.7 nm). The absence of the first-order (00l) reflection in the X-ray diffraction pattern was also indicative of the absence of Mo3S4 stacking, suggesting that it was a non-layered material. A dispersion of the nanoparticles in linseed oil has been studied as a lubricant of steel–steel sliding contacts, showing the formation of a surface layer that reduces wear and mean friction coefficients with respect to the base oil.
PB MDPI
SN 1996-1944
YR 2018
FD 2018
LK https://uvadoc.uva.es/handle/10324/53375
UL https://uvadoc.uva.es/handle/10324/53375
LA eng
NO Materials, 2018, vol. 11, n. 9, p. 1783
NO Producción Científica
DS UVaDOC
RD 26-dic-2024