Protective action of lubricating oils

Conclusions It has been shown that motor oils do not protect ferrous or nonferrous metals from electrochemical corrosion. Preservative or operational-preservative oils, on the other hand, are capable of protecting metals even under conditions of aggressive media and long exposure periods. Potential corrosivity of these oils has been determined by taking polarization curves from aqueous extracts of the original and oxidized oils.It has been shown that oils giving aqueous extracts capable of retarding the development of electrochemical corrosion will have good protective properties even without the inclusion of special-purpose inhibitors in these oils.Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 5, pp. 49–52, May, 1970.     

Oxidation stability of lubricating base oils

The oxidative stability of three base lubricating oils of different grades light, medium and heavy oils (B1, B2 and B3, respectively) was studied at oxidative times 50, 100 and 150 hours. The quality of base oils under investigation were evaluated on the basis of total acid number, vaporization loss, kinematic viscosity and quantity of sludge formed. Also, the chemical composition of the studied lubricating oils was achieved via capillary gas chromatography. The comparative study of the oxidative performance of the base oils showed that the higher degrees of heavy oil than light one. The increase in the oxidation time led to increases of the evaporation loss and lubricant viscosity. Analysis of a lubricant's oxidation stability therefore contributes to a better understanding of its effectiveness under normal operating conditions and its suitability for formulating automotive lubricants. The aim of this work is the study the Potential life of lubricant oils inside engine motor at different oxidative times in view of their oxidation stability.     

Anomalous viscosities of aged lubricating oils

Conclusions It has been established that during use of an oil in the engine the viscosity can quickly lose its Newtonian character. The viscosity anomaly increases with the ageing of the oil. The addition of a dispersing additive to the used oil reduces the viscosity anomaly. This anomalous viscosity can be explained mainly as aggregation of particles of the dispersed phase and the thixotropic change of its parameters, followed by a change in quantity of the immobilized portion of the medium.It has been shown that the usual measurement of viscosity with a capillary viscometer, which operates under hydrodynamic conditions with a relatively low velocity gradient, can sometimes lead to wrong conclusions regarding the conditions of the oil.Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 11, pp. 53–55, November, 1968.     

Protective properties of petroleum lubricating oils

Chemistry and Technology of Fuels and Oils -     

Ecological aspects of use of lubricating oils

Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 1, pp. 37–40, January, 1992.     

The scintillation properties of some lubricating oils

Conclusions It has been shown that various industrial oils can be used as the solvent for preparing liquid scintillators.The scintillation efficiency of scintillators of this type is up to 60% of the amplitude of a stilbene crystal, i.e., it is fully comparable with the efficiency of commercially produced scintillators (toluene and benzene).Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 2, pp. 49–51, February, 1969.