Mechanism of lubricating action of polyphosphate and heteropolyphosphate additives in tribosystems

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Abstract

The phase diagrams of the Zn(PO3)2–Ca(PO3)2 and Zn(PO3)2–Ni(PO3)2 systems were studied, and the double phosphates CaZn(PO3)4 and NiZn(PO3)4 were allocated. The anions of these compounds are chain polyphosphates with PO4 tetrahedra in the period of identity. The structures and mechanism of the action of these compounds as additives to lubricants were described using quantum-chemical analysis. Improvement of the physicochemical and tribotechnical characteristics of lubricating materials containing these phosphates compared to the traditionally used lubricating materials was confirmed in tribotechnical tests.

About the authors

V. I. Kolesnikov

Rostov State Transport University

Email: ymigal@mail.ru
Russian Federation, Rostov-on-Don, 344038

M. A. Savenkova

Rostov State Transport University

Email: ymigal@mail.ru
Russian Federation, Rostov-on-Don, 344038

Yu. F. Migal

Rostov State Transport University

Author for correspondence.
Email: ymigal@mail.ru
Russian Federation, Rostov-on-Don, 344038

N. A. Myasnikova

Rostov State Transport University

Email: ymigal@mail.ru
Russian Federation, Rostov-on-Don, 344038

D. N. Shishiyanu

Rostov State Transport University

Email: ymigal@mail.ru
Russian Federation, Rostov-on-Don, 344038

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