THE PHYSICAL PROCESSES AT SUPERCONDUCTIVITY IN PAIRS OF FRICTION BRAKES
DOI:
https://doi.org/10.18372/0370-2197.2(99).17621Keywords:
braking device, friction pairs, metal friction element, superconductivity, heat capacity and heat transfer coefficient of electrons and crystal latticeAbstract
The theoretical and experimental studies of the main physical parameters in the case of superconductivity of a metallic friction element, which is under the unilateral action of thermal, electric and magnetic fields, made it possible to establish the following.
The energy of an electron in a crystal lattice cannot take on any values due to the fact that there are sets of discrete energy levels (zones) separated by more or less significant distances. Heat capacity and thermal conductivity have components that relate to electrons and the crystal lattice; the heat capacity in the state of superconductivity turned out to be less than the heat capacity of a normal metal, and the heat conductivity increased due to the local interaction of microprotrusions of friction pairs. In the surface layer of the metal under the action of a magnetic field, a stationary electric current arises, which has its own magnetic field opposite to the applied field, which, as a result, leads to a zero value of induction in the surface layer of the metal. At a critical value of the magnetic field strength, the subsurface layer of the metal friction element goes into a normal state.
References
Treniye, iznos i smazka (tribologiya i tribotekhnika) / Pod obshch. red. A.V.Chichinadze. – M.: Mashinostroyeniye, 2003. – 575 s.
Kragel'skiy I. V. Treniye i iznos / I. V. Kragel'skiy. – M.: Mashinostroyeniye, 1986. – 480 s.
Fedorchenko I. M. Issledovaniye materialov dlya tormoznykh i peredatochnykh ustroystv / I. M. Fedorchenko, D. YA. Rovinskiy, Ye. L. Shvedov //Iz-vo «Naukova dumka», Kiyev. – 198 s.
K voprosu opredeleniya kontaktnogo elektrotermomekhanicheskogo sopro-tivleniya v tribosopryazheniyakh metallopolimernykh par treniya tormoznykh ustroystv / A. I. Vol'chenko, M. V. Kindrachuk, D. A. Vol'chenko [i dr.] // Problemy treniya i iznosa: nauchn. tekhn. sb. – K.: NAU, 2017. - №1(74). – S.23-34.
Levin A. Sverkhprovodimost': vremya ponimaniya / A. Levin // Populyarnaya mekhanika. – P. 56-61.
Proyektnyy i proverochnyy raschet friktsionnykh uzlov barabanno- i diskovo-kolodochnykh tormozov transportnykh sredstv / A. KH. Dzhanakhmedov, A. I. Vol'chenko, N. A. Vol'chenko [i dr.]. – Baku: Apostroff, 2016. – 366 s.
Balakin V. A., Sergiyenko V. P. Ispytaniya materialov na friktsionnuyu teplo-stoykost'. Treniye i iznos, 1996. - №2. – S. 194-201.
Energeticheskiye urovni razlichnykh tipov kontaktov mikrovystupov par treniya / M. V. Kindrachuk, A. I. Vol'chenko, D. A. Vol'chenko, V. S. Skrypnik, A.V. Voznyy // Fiz.-khim. mekhanika materialov. – 2018. - №6. – S.83-90.
Krasin V. Z. Sverkhprovodimost' i sverkhtekuchest' / V. Z. Krasin // Iz-vo: Pro-sveshcheniye, M., 1968. – 150 s.
Downloads
Published
How to Cite
Issue
Section
License
The scientific journal adheres to the principles of Open Access and provides free, immediate, and permanent access to all published materials without financial, technical, or legal barriers for readers.
All articles are published in Open Access under the Creative Commons Attribution 4.0 International (CC BY 4.0) license.
Copyright
Authors who publish their works in the journal “Problems of Friction and Wear”:
-
retain the copyright to their publications;
-
grant the journal the right of first publication of the article;
-
agree to the distribution of their materials under the CC BY 4.0 license;
-
have the right to reuse, archive, and distribute their works (including in institutional and subject repositories), provided that proper reference is made to the original publication in the journal.
