Bio-based ionic liquid crystal for stainless steel-sapphire high temperature ultralow friction
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Avilés González, María Dolores; Carrión Vilches, Francisco José; Sanes Molina, José; Bermúdez Olivares, María DoloresÁrea de conocimiento
Ciencia de los Materiales e Ingeniería MetalúrgicaPatrocinadores
This research was funded by Spanish Ministerio de Ciencia e Innovación, Agencia Estatal de Investigación (AEI), and the European Union FEDER Program (Grant # MAT2017–85130-P). “Este trabajo es resultado de la actividad desarrollada en el marco del Programa de Ayudas a Grupos de Excelencia de la Región de Murcia, de la Fundación Seneca, Agencia de Ciencia y Tecnología de la Región de Murcia (Grant #19877/GERM/15)”.Realizado en/con
Universidad Politécnica de CartagenaFecha de publicación
2021-07-09Editorial
ElsevierCita bibliográfica
M.D. Avilés, F.J. Carrión, J. Sanes, M.D. Bermúdez, Bio-based ionic liquid crystal for stainless steel-sapphire high temperature ultralow friction, Wear, Volumes 484–485, 2021, 204020, ISSN 0043-1648, https://doi.org/10.1016/j.wear.2021.204020.Revisión por pares
SIPalabras clave
Sliding frictionLubricated wear
Steel
Sapphire
Ionic liquid crystal
Temperature
Resumen
In the present work, the biobased protic ionic liquid crystal bis(2-hydroxyethyl) ammonium palmitate (DPA) has been studied as neat lubricant under linear reciprocating sliding at 75 °C, in the liquid crystalline region, and at 110 °C, above its melting point. Three different tribopairs have been studied using AISI 52100 steel, AISI 316L stainless steel and sapphire balls against AISI 316L disks. Tribological results at 75 °C are in agreement with the different sliding pairs and contact conditions. At 110 °C, a sharp friction coefficient reduction to reach an ultralow steady state value of 0.007–0.009, is observed for the sapphire-AISI 316L contact. Wear rate is also reduced in one order of magnitude. Results are related to water content in DPA, as determined by TG-MS. Wear mechanism are discussed upon the basis of optical and scanning electron microscopy (SEM/EDX) and of surface analysis by XPS.
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