Nanodispersed Ferrofluid Oil Lubricity Improvement with Processing Methods

Abstract

The article proposes and justifies the use of technological methods of improvement of nanodispersed magnetic oil lubricating properties. It is shown that if the ferrofluid oil producing process includes additional operations, which are aimed at the removal of excess surfactant stabilizer and big magnetic agglomerates from its composition, it allows decreasing friction and wear of lubricated surfaces by tens of percent.The authors have chosen ferrofluid lubricant oil that had been synthesized based on dioctyl sebacate for the research due to its good lubricating properties, low volatility and viscosity and a wide temperature range of operability. To remove the excess of the surfactant stabilizer dissolved in a ferrofluid oil dispersion medium the dispersion medium replacement method proposed by R.E. Rosenzweig was used. To remove large magnetic units from magnetic fluid the authors used magnetic separation.In boundary friction surfaces lubricated by ferrofluid oil there might be their abrasive wear by agglomerates from single-domain magnetic particles. In this connection, the article experimentally proves the necessity of modifying magnetic liquid unit friction surfaces using MAO-technology to protect them from abrasion wear.