Tribological Performance of Rosin Acid Additives in Water Based Lubricants

Abstract

Lubricants for metalworking applications make extensive use of water-soluble additives to reduce friction and wear. In order to do such task, these additives must form a lubricating film that separates the contact surfaces thus imparting good surface finish to the worked parts. This paper presents a study on the tribological performance of aqueous solutions of rosin acids. Tests were carried out on a pin-on-disk tribometer for a steel-aluminum contact while keeping load, entrainment speed, sliding distance, temperature and concentration of the additive constant to study the lubrication effect of the additive-containing solutions. Chemical analysis of the wear track indicates the in-contact formation of an organic film caused by the additive interaction and aluminium surface. A substantial friction and wear reduction is observed.

Next-Generation Lubricity in Deep Drawing: The Synergistic Benefits of PIL and Talc on Water-Based Lubricants

“…The increasing demand for environmentally friendly production methods has resulted in a transition from conventional lubricants used in mechanical forming operations to water-based lubricants [9]. To optimize the performance of these lubricants, top-quality additives are used, including surface/interface active molecules [10].…”

Tribological performance of pullulan additives in water-based lubricant

“…The most striking challenge is insufficient lubricating properties of water, which sets high demands for the boundary lubrication additives for water. The tribological properties of aqueous solutions containing active additives were the subject of numerous literature reports [1][2][3][4][5][6][7][8][9][10][11][12]. However, majority of these organic compounds are not totally considered as green compounds for both human beings and natural environment.…”

Low friction of phytic acid as a water-based lubricant additive

“…The most striking challenge is insufficient lubricating properties of water, which sets high demands for the boundary lubrication additives for water. The tribological properties of aqueous solutions containing active additives have been the subject of numerous literature reports (Hartung et al, 2009;Tomala et al, 2010;Sulek and Wasilewski, 2009;Joly-Pottuz et al, 2009;Zhang et al, 2012;Santos and Guillemet, 2002;Rojas-Campanur et al, 2007). However, majority of these organic compounds are not totally considered "green" compounds for both human beings and the natural environment.…”