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T. G. Vakhreneva
T. G. Vakhreneva
Research assistant
G.V. Plekhanov Saint Petersburg Mining Institute
Research assistant
G.V. Plekhanov Saint Petersburg Mining Institute

Articles

Humanities and fundamental researches
  • Date submitted
    2009-08-27
  • Date accepted
    2009-10-25
  • Date published
    2010-02-01

Regularities of change of water-repellent properties of the nanostructured metal powders on the base of aluminium

Article preview

Regularities of change of water-repellent properties of metal powders on the basis of aluminium depending on the program of nano-structural surface modifying are studyed. The rows of increase of water-repellent properties of modified aluminium on the base of coarse-dispersed and high-dispersed (PAP-2) powders are obtained. Several specimens excelling initial hydrohobic PAP-2 inits water-repellent capacity are found out. The research uses the methods of XP-, EDX- spectroscopy and gravimetry.

How to cite: Zhurenkova L.A., Vakhreneva T.G., Syrkov A.G., Taraban V.V. Regularities of change of water-repellent properties of the nanostructured metal powders on the base of aluminium // Journal of Mining Institute. 2010. Vol. 186. p. 241-244.
Humanities and fundamental researches
  • Date submitted
    2009-08-14
  • Date accepted
    2009-10-20
  • Date published
    2010-02-01

Research of antifrictional properties of industrial oil with additives of the nanostructured metals the acoustic method

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On data of acoustic method, it’s discovered that dependence of integral index of friction (D) from loading pressure (P) under using of best lubricant with addition of nanostructured aluminium powder after treatment by mixture of alcamon and triamon vapour, doesn’t consist a characteristic peak under small pressures. This dependence is smooth, plain curve and in pressure range (15-55 MPa) is correctly described by equation D=8,5e 0,082P . Alteration of D on exponent low takes place under using of analogous addition on copper powder base and powder copper, which is processed by alcamon, too. Those facts testify about liquid mode of friction.

How to cite: Pleskunov I.V., Bystrov D.S., Syrkov A.G., Pantyushin I.V., Vakhreneva T.G. Research of antifrictional properties of industrial oil with additives of the nanostructured metals the acoustic method // Journal of Mining Institute. 2010. Vol. 186. p. 249-252.
Humanities and fundamental researches
  • Date submitted
    2006-07-10
  • Date accepted
    2006-09-29
  • Date published
    2007-01-01

Experience of estimation of antifriction properties of metal surface by Stokes method

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Opportunities to use the Stox equipment for relative estimation of antifriction properties of a solid surface are justified. Measuring of time and speed of uniform movement of similar steel balls with different nanocoatings showed that the least time (the highest speed) was registered for the sample which contains both kinds of cationic tensides in its surface layer. The data does not contradict results of industrial tests on conveyers with steel transport band and the best antifriction effect for lubricant composition.

How to cite: Vakhreneva T.G., Urazaeva M.R., Syrkov A.G. Experience of estimation of antifriction properties of metal surface by Stokes method // Journal of Mining Institute. 2007. Vol. № 1 170. p. 240-243.