Modification of sintered iron properties by Y₂O₃ nanoparticles

• Datum: 2016
• Hauptverfasser: Cherednyk, M.I., Popov, O.Yu., Chornobuk, S.V., Totsky, I.M., Semenko, M.P., Boshko, O.I., Tkachuk, V.Ja., Slobodianyk, Y.V., Naumenko, S.M., Makara, V.A.
• Format: Artikel
• Sprache: English
• Veröffentlicht: НТК «Інститут монокристалів» НАН України 2016
• Schriftenreihe: Functional Materials
• Schlagworte: Characterization and properties
• Online Zugang: https://nasplib.isofts.kiev.ua/handle/123456789/120627
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Zitieren: Modification of sintered iron properties by Y₂O₃ nanoparticles / M.I. Cherednyk, O.Yu. Popov, S.V. Chornobuk, I.M. Totsky, M.P. Semenko, O.I. Boshko, V.Ja. Tkachuk, Y.V. Slobodianyk, S.M. Naumenko, V.A. Makara // Functional Materials. — 2016. — Т. 23, № 2. — С. 249-254. — Бібліогр.: 23 назв. — англ.

Influence of Y₂O₃ nanoparticles on sintered iron structure and microhardness is investigated. Ferrite grain growth is shown to be slowed down by the clusters which cause altering the grain shape from needle-like to equiaxial (with lower specific surface). Yttrium oxide particles resulted microhardness increasing to 3.6 GPa at 1 % of second phase content. The fact is explained by retardation of dislocations on disperse particles by the Orowan mechanism.