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Title:Študij notranje oksidacije v naogljičenih hitrostrjenih trakovih Cu
Authors:Rudolf, Rebeka (Author)
Kosec, Ladislav (Author)
Anžel, Ivan (Author)
Gusel, Leo (Author)
Poharc, Mojmir (Author)
Files:.pdf Materiali_in_Tehnologije_2007_Rudolf_et_al._Studij_notranje_oksidacije_v_naogljicenih_hitrostrjenih_trakovih_Cu.pdf (547,46 KB)
MD5: 43FF85F3B7931688EBDE747E57D71281
 
URL http://mit.imt.si/Revija/izvodi/mit071/rudolf.pdf
 
Language:Slovenian
Work type:Scientific work (r2)
Typology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Abstract: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.
Keywords:metalurgija, kompoziti, notranja oksidacija, grafit, bakrovi trakovi, mikrostruktura
Year of publishing:2007
Number of pages:str. 53-58
Numbering:št. 1, Letn. 41
ISSN:1580-2949
UDC:669.3:66.094.3:620.18
ISSN on article:1580-2949
COBISS_ID:11119894 New window
NUK URN:URN:SI:UM:DK:XZCGUTGN
Views:465
Downloads:62
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Categories:Misc.
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Record is a part of a journal

Title:Materiali in tehnologije
Shortened title:Mater. tehnol.
Publisher:Inštitut za kovinske materiale in tehnologije
ISSN:1580-2949
COBISS.SI-ID:106193664 New window

Secondary language

Language:English
Title:The study of the internal oxidation in internally carbonised Cu ribbons
Abstract: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.
Keywords:metallurgy, composites, internal oxidation, graphite, copper ribbons, microstructure


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