o:5852 Reasons for brazing with copper filler metal alloyed with the copper (I) and iron (III) oxides en Abstract: Brazing history is a pretty long, might be over 5000 years. In the new era, it is accepted that the brazing filler metal must contain pure metal(s) or more frequently the pure alloys. Pureness here means the absence of various non-metallic inclusions and/or oxides in filler metal: it is explainable by the reduction of mechanical or other important servicing properties. It is wide accepted that during provi-ding the process of brazing (also soldering), the wetting properties are also reduced if the mentioned non-metallic inclusions or oxides are present in the filler metal. Attempts should be respectable, and so one could find that in copper filler metal intentionally were added copper(I) and iron(III) oxides, but without explanations about the mechanism of such acting. It is evident that these oxides have shown a positive effect on wettability when brazing is done using such combination of copper-oxides. Keywords: copper filler metal, Cu2O, Fe3O4, wetting proprerites, capillary properties. 91552100 121286153 1552100 978-86-7827-052-9 2024-10-28T23:44:32.406Z 44 no 46 Zoran Karastojković Društvo za etičnost i vrednovanje u kulturi i nauci 4283751 2022 46 Ana Kostov Institut za rudarstvo i metalurgiju Bor 72828937 0000-0001-6436-9091 2022 46 Radiša Perić „Perić & Perić” d.o.o. 62824457 2022 application/pdf 1369949 https://unilib.phaidrabg.rs/o:5852 no yes 1 70 621.792.3:544.774 92000004 71A03 Proceedings International October Conference on Mining and Metallurgy (53 ; 2022 ; Bor) 93 96 2022