20.500.12556/DKUM-26879 Optical properties of plastically deformed copper : an ellipsometric study Optične lastnosti plastično deformiranega bakra: študij elipsometrije In this paper the results of optical properties investigations on plastically deformed copper are presented. The optical properties of the plastically deformed copper were studied using spectroscopic ellipsometry in the ultraviolet-visible (UV-VIS) range. Chemically pure copper was deformed by applying the Equal Channel Angular Pressing (ECAP) technique. During the last decade, equal-channel angular pressing procedure was used for the fabrication of ultrafine-grained metals and alloys. The plastic deformation of metallic materials leads to the production of bulk nano-scale structures with ultrafine grains and cross-sections, which remain about equal before and after deformation. The parameters of the sample were calculated using a two-film model together with the Bruggeman effective medium approximation. V članku so predstavljeni rezultati raziskav optičnih lastnosti plastično deformiranega bakra. Te so bile raziskane s spektralno elipsometrijo v območju vidne UV-svetlobe. Kemijsko čist baker je bil deformiran z uporabo ECAP-metode (enakokotno koničasto stiskanje). V zadnjem času se ECAP-postopek uporablja za izdelavo ultra udrobnjenih kovin in zlitin. Takšna plastična deformacija kovinskih materialov vodi k izdelavi masivnih nanostruktur z ultra drobnimi zrni in prečnim prerezom, kar omogoča približno enakost pred deformacijo in po njej. Parametri preiskanih vzorcev so bili izračunani na osnovi uporabe dvojne plasti - filma skupaj s Bruggemanovo srednjo efektivno aproksimacijo. ellipsometric spectroscopy atomic force microscopy copper amorphisation elipsometrična spektroskopija atomska mikroskopija baker amorfizacija true false true Angleški jezik Slovenski jezik Znanstveno delo 2012-06-01 08:32:16 2012-06-01 08:32:16 2022-04-15 13:34:37 2021-04-11 03:18:57 2011 0 0 str. 463-465 št. 5 Letn. 45 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1580-2949 669.3:620.17 106193664 15446038 1580-2949 URN:SI:UM:DK:IT6ZK81V Materiali_in_Tehnologije_2011_Romcevic_et_al._Optical_Properties_of_Plastically_Deformed_Copper_an_Ellipsometric_Study.pdf Materiali_in_Tehnologije_2011_Romcevic_et_al._Optical_Properties_of_Plastically_Deformed_Copper_an_Ellipsometric_Study.pdf 1 0909518270AB0ED7ED1420EC7A0D7C4B 50c71f698b6392fb5712b5da331dc195ca824d5e41593b64c57d32eafc3f96b7 ffb4d58b-7c0d-11eb-bb7a-00155d0001ca 20.500.12556/dkum/73c88cdc-5bda-4ae0-a2b5-93aff8be275b https://dk.um.si/Dokument.php?lang=slv&id=109945 http://www.imt.si/Revija/izvodi/mit115/romcevic.htm 1 https://dk.um.si/Dokument.php?lang=slv&id=36057 Fakulteta za strojništvo 0 0 0