Electrospark alloying for deposition on aluminum surface of Al-Sn coatings and their wear resistance under dry friction
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AGAFII, Vasile, PETRENKO, Vladimir, FOMICEV, V, IURCENCO, V, YURCHENKO, E., DIKUSAR, Aleksandr. Electrospark alloying for deposition on aluminum surface of Al-Sn coatings and their wear resistance under dry friction. In: Surface Engineering and Applied Electrochemistry, 2013, nr. 3(49), pp. 1-8. ISSN 1068-3755.
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Surface Engineering and Applied Electrochemistry
Numărul 3(49) / 2013 / ISSN 1068-3755 /ISSNe 1934-8002

Electrospark alloying for deposition on aluminum surface of Al-Sn coatings and their wear resistance under dry friction

Pag. 1-8

Agafii Vasile1, Petrenko Vladimir1, Fomicev V2, Iurcenco V2, Yurchenko E.2, Dikusar Aleksandr 21
 
1 Institute of Applied Physics, Academy of Sciences of Moldova,
2 T.G. Shevchenko State University of Pridnestrovie, Tiraspol
 
 
Disponibil în IBN: 27 februarie 2014


Rezumat

Some aspects of coating deposition on aluminum substrate by electrospark alloying with toolelectrode from Al-Sn alloy stimulating the SnO2 nanofibers formation in coatings have been studied. Wear resistance of such coatings, under dry friction conditions, in conjunction with a counterbody from hardened steel has been investigated. The conditions under which the coatings thus obtained manifest the of effect of the maximal wear excessof the counterbody compared to the wear of the coatings containing SnO2 nanofibers have been specified. The effect reaches its maximum value under the dry friction after the treatment of the surface in the mode of “sparking” at a constant energy supply in the spark gap: at high rates of the tool electrode movement with respect to the specimen and at relatively large times of the electrospark effect on the treated surface.

Исследованы некоторые особенности получения покрытий на поверхности алюминия электроискровым легированием электродом из сплава Al-Sn, при котором в покрытии происходит образование нанонитей из SnO2. Исследована износостойкость таких покрытий в условиях сухого трения в паре с закаленной сталью. Определены условия, при которых проявляется наибольший эффект превышения износа контртела относительно износа покрытия, содержащего нанонити SnO2. В условиях сухого трения в наибольшей степени эффект проявляется после обработки в режиме «обыскривания» при постоянном количестве электричества пропускаемого через межэлектродный промежуток (при высоких скоростях перемещения электрода-инструмента относительно образца и относительно больших временах электроискрового воздействия на обрабатываемую поверхность).

Cuvinte-cheie
electrospark alloying, Al-Sn alloy, nanofiber, wear-resistance.