ZrN coatings on U8 steel obtained by electrospark alloying after a concentrated solar irradiation

• Date: 2008
• Main Authors: Paustovsky, A.V., Pasichny, V.V., Novikova, V.I., Mordovets, N.M., Isaeva, L.P., Ostapenko, S.A.
• Format: Article
• Language: English
• Published: НТК «Інститут монокристалів» НАН України 2008
• Series: Functional Materials
• Subjects: Technology
• Online Access: http://dspace.nbuv.gov.ua/handle/123456789/135358
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: ZrN coatings on U8 steel obtained by electrospark alloying after a concentrated solar irradiation // A.V. Paustovsky, V.V. Pasichny, V.I. Novikova, N.M. Mordovets, L.P. Isaeva, S.A. Ostapenko // Functional Materials. — 2008. — Т. 15, № 3. — С. 429-432. — Бібліогр.: 5 назв. — англ.

Structure, hardness, and tribological characteristics of electrospark coatings from ZrN-(Cr, Ni, Al₂O₃) on US steel after treatment by concentrated solar radiation (CSR) have been investigated. It is shown that the intensity of wear and factor of friction of specimens with coating after CSR are essentially less than for non-treated US steel. At changing of regime of CSR treatment from 785°C, 25.3 s to 530°C, 8.6 s and at decreasing of sliding speed at wear test from 10 m/s to 5 m/s the tribological characteristics improves. After treatment by CSR the strengthening of steel surface is observed the quenching with formation of martensite and troostite take place. At treatment by concentrated solar radiation changing in phase composition of coatings observed: before treatment by CSR the main phase in coating is ZrO₂ (cubic), after treatment by CSR the main phase is ZrNi, ZrO₂ (tetragonal) is also present.