20.500.12556/DKUM-52814 Študij notranje oksidacije v naogljičenih hitrostrjenih trakovih Cu The study of the internal oxidation in internally carbonised Cu ribbons In this paper we present a composite with fine dispersion of nano-sized bubbles, which can be formed by internal oxidation of fine dispersed graphite particles. For this purpose the initial pure Cu ribbons were internally carbonised to obtain very fine, some 100 nm-sized graphite particles homogeneously distributed in the Cu matrix. By the internal oxidation process the reaction of dissolved oxygen with graphite yields the gas products (CO, CO2) which cannot be dissolved in the crystal lattice of the metal. The gas products are meshed in the space previously occupied by graphite and they have a greater specific volume than the solid graphite, thus establishing the compressive stresses in the metalic matrix and consequently causing the strengthening offect. On the other hand, such stress fields can react with sliding dislocation, whereby they impede the dislocation motion and consequently we would expect that the composite mechanical properties would be improved. In this paper we present the composite with the fine dispersion of nano-sized bubbles, which can be formed by the internal oxidation of fine dispersed graphite particles. For this purpose the initial pure Cu ribbons were internally carbonised to obtain very fine some 100 nm sized graphite particles homogeneously distributed in the Cu matrix. By the internal oxidation process the reaction of dissolved oxygen with graphite yields the gas products (CO, CO2), which cannot be dissolved in crystal lattice of the metal. The gas products are meshed in the space previously occupied by graphite and they have a greater specific volume than solid graphite, thus establishing the compressive stresses in the metallic matrix and consequently causing the strengthening effect. On the other hand, such stress field can react with sliding dislocation, whereby they impede the dislocation motion and consequently it would expect that the composite mechanical properties would be improved. metalurgija kompoziti notranja oksidacija grafit bakrovi trakovi mikrostruktura metallurgy composites internal oxidation graphite copper ribbons microstructure true false true Slovenski jezik Angleški jezik Znanstveno delo 2015-07-10 18:24:58 2015-07-10 18:24:58 2022-06-01 03:07:35 2021-05-10 03:28:56 2007 0 0 str. 53-58 št. 1 Letn. 41 2007 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1580-2949 669.3:66.094.3:620.18 106193664 11119894 1580-2949 URN:SI:UM:DK:XZCGUTGN Materiali_in_Tehnologije_2007_Rudolf_et_al._Studij_notranje_oksidacije_v_naogljicenih_hitrostrjenih_trakovih_Cu.pdf Materiali_in_Tehnologije_2007_Rudolf_et_al._Studij_notranje_oksidacije_v_naogljicenih_hitrostrjenih_trakovih_Cu.pdf 1 43FF85F3B7931688EBDE747E57D71281 6be42e609d33d6e4d93659934aa71547f041a74f2a1b2ccd642af205d8b6a256 04b3ac1b-7c0e-11eb-bb7a-00155d0001ca https://dk.um.si/Dokument.php?lang=slv&id=110146 http://mit.imt.si/Revija/izvodi/mit071/rudolf.pdf 1 https://dk.um.si/Dokument.php?lang=slv&id=110147 Fakulteta za strojništvo 0 0 0