The paper presents the results of a microstructural analysis of copper alloys produced in the Copper Mill Sevojno. The analyzed materials comprise high-purity copper (Cu-ETP and Cu-DHP) and a series of brass alloys with varying zinc content (CuZn10, CuZn15, CuZn28, CuZn30, CuZn33, CuZn37). Various thermomechanical treatments were conducted on the s...

By Aleksandar Nikolajević, Ljubiša Balanović, Dragan Manasijević, Ivana Marković, Uroš Stamenković, Kristina Božinović

The particle shape and size of the starting powders represent the most important physicalproperties, on which the quality of the compacts and final sintered products depends. Two types ofpowder were analyzed in the paper - electrolytic copper powder with a dendritic particle shape andwater-atomized copper powder with an irregular particle shape. Th...

By Ivana Marković, Dragan Manasijević, Ljubiša Balanović, Uroš Stamenković, Milijana Mitrović, Stevan Trujić

Low-melting alloys, based on bismuth, indium, and tin, have found commercial use in soldering,safety devices, coatings, and bonding applications, due to their low melting point temperature ofeutectic compositions and small differences between their liquidus and solidus temperatures.Based on this, the accurate knowledge of their thermal properties s...

By Ljubiša Balanović, Dragan Manasijević, Ivana Marković, Milan Gorgijevski, Uroš Stamenković, Dajana Milkić

In this paper, C45 medium carbon tool steel was investigated after various heat treatments. The thermal properties, specifically thermal diffusivity and thermal conductivity, were measured and also the microstructure analysis was done on a light microscope. Heat treatment of the samples included: 1) the normalization heat treatment a...

By Uroš Stamenković, Ivana Marković, Srba Mladenović, Dragan Manasijević, Ljubiša Balanović, Avram Kovačević, Milan Nedeljković, Jovana Božinović

Thermal properties and microstructure of the Sn-10% Ag and Sn-20% Ag alloys were experimentally investigated in this study. Melting behavior of the alloys were studied using differential scanning calorimetry (DSC). Microstructure of the alloys was analyzed by optical microscopy. The xenon-flash method was used for the measurements of thermal diffus...

By Dragan Manasijević, Ljubiša Balanović, Ivana Marković, Duško Minić, Aleksadar Đorđević

Cu-alloys have been intensively studied because of their high thermal conductivity, good electrical and shape memory properties and low cost. Cu-Al-Mn alloys show a higher ductility and elongation in relation to the other Cu-based alloys, as well as a good potential for a cold drawing. Therefore, the investigation of these alloys is ...

By Tamara Holjevac-Grgurić, Dragan Manasijević, Dragana Živković, Ljubiša Balanović, Stjepan Kožuh, Robert Pezer, Ivana Ivanić, Ivan Anžel, Borut Kosec, Ladislav Vrsalović, Mirko Gojić

Phase diagram of the Al-Sn-Ga ternary system was calculated using optimized thermodynamic parameters for binary sub-systems based on CALPHAD method. Four vertical sections were calculated: Ga0.5Sn0.5-Al, Al0.5Sn0.5-Ga, Al0.5Ga0.5-Sn, and Al0.9GaSn0.1-Ga. Calculated liquidus projection of the Al-Sn-Ga ternary system and isothermal sec...

By Ljubiša Balanović, Dragana Živković, Dragan Manasijević, Jožef Medved, Maja Vončina

Flotation tailings represent the sources of pollution due to degradation of the areas in the vicinity of industrial facilities, raising dust that pollutes the air and penetration of contaminated water into water courses. Flotation tailings Bor, which was the subject of research in this paper, contains copper and is, therefore, a pote...

By Nada Štrbac, Aleksandra Mitovski, Miroslav Sokić, Ivan Mihajlović, Dragana Živković, Ljubiša Balanović