Abstract
It was shown that quasi-amorphous potassium polytitanate polyphosphate particles with a layered structure and high antifriction properties can be synthesized by treatment of a titanium dioxide powder in melts in the KOH–KH2PO4 system. At a certain ratio between the components in the reaction mixture, one can obtain the product with a minimum content of crystalline phases. The particles of the obtained X-ray amorphous product have a layered structure similar to that of potassium polytitanate synthesized in melts in the system TiO2–KOH–KNO3 but are characterized by a high content of phosphorus, which improves the tribological characteristics of the material. It was detected that, at [KH2PO4] > [TiO2], in the reaction mixture, a secondary crystalline phase K2Ti2(PO4)3 forms, which enhances the antiscuff properties of lubricants produced based on the obtained products, but reduces their antifriction properties.
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This work was performed under a state assignment of the Ministry of Science and Higher Education of the Russian Federation (project no. 10.1434.2017).
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Morozova, N.O., Nikityuk, T.V., Tsyganov, A.R. et al. Synthesis of Potassium Polytitanates Modified in Melts in the System TiO2–KOH–KH2PO4 and the Tribological Properties of the Obtained Products. Russ. J. Inorg. Chem. 65, 805–811 (2020). https://doi.org/10.1134/S0036023620060121
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DOI: https://doi.org/10.1134/S0036023620060121