The production of titanium is very expensive, so it is interesting to research technologiesthat require lower costs, such as the HDH hydrogenation-dehydrogenation processtechnology, which is used for cheaper powder production from the waste material oftitanium alloys.This paper presents the hydrogenation procedure of a recycled piece of the Ti6Al7N...

By Aida Imamović, Mirsada Oruč, Šaban Žuna, Esad Hadžibulić

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

In the paper, the influence of the cutting conditions (cutting speed, feed, and depth of cut) duringthe machining of the cylindrical steel part on the surface roughness (average surface roughness-Ra) is analysed using experimental investigation. The material used in the full factorialexperimental investigation was C45 steel, a diameter of 50 mm, ma...

By Tarik Gazić, Sabahudin Ekinovic, Edin Begović, Ibrahim Plančić

Some specific aspects of metallurgy consulting in the industrial transition of Bosnia andHerzegovina are presented in this paper. The theoretical part of the paper is mostly concerned witha short overview of ZELJEZARA ZENICA cum ARCELORMITTAL-ZENICA (AMZ) product-mixand the facilities transition, as an example of the a.m. transition, although these...

By Faik Uzunović

Rutin belongs to the group of polyphenolic compounds, which consists of hormones, vitamins, andantioxidants in food. It is found mostly in plants and is one of the most biologically activeflavonoids. It can act as an antioxidant, antibacterial, and anti-inflammatory and can prevent theformation of a tumor. The concentrationof rutin was determined i...

By Dejana Kasapović, Farzet Bikić

Hydrocracked base oil raw material (BORM) is the basis for the production of hydrocracked baseoils (HC-base oils) in the company „Modriča Oil Refinery“, which is engaged in the production ofHC-base oils, various motor and industrial lubricating oils, and lubricating greases. Theproduction of the mentioned HC-base oils consists of four p...

By Azra Halilović, Ilhan Bušatlić, Šefkija Botonjić, Nadira Bušatlić, Edin Zolotić

Coal is the most important and widespread fuel sedimentary rock of organic origin. It is one ofthe main energy sources today and an industrial raw material for various products. Together withthe oil and other natural bitumens, it belongs to the group of fossil fuels or caustobiolite.Combustion represents one of the fundamental energy transformation...

By Azra Halilović, Šefkija Botonjić, Amila Krnjić, Lamija Sušić

Many researches are done for finding various ways of improving steel properties, since it's the most used material in the world. Instead of using high-alloyed steels, which are expensive, microalloying of carbon steels that will retain equal properties is an efficient replacement. For this research it was tested melts of low-carbon steel grade SAE ...

By Aida Imamović, Adna Puljić, Omer Kablar

This work aims at the development of low-carbon steel SAE 1006 through the microalloying addition of boron. Boron as alloying element is added in small amount, but it has significant effect on changes of properties of this kind of steel. The research is based on mechanical and microstructural testing of final product (wire) from the aspect of the i...

By Aida Imamović, Alma Puljić, Omer Kablar

In this paper, the influence of Na2SiO3 /NaOH ratio on the compressive strength of fly ash - based geopolymers was tested. The fly ash from thermal power plant Stanari near Doboj, BiH is used.The ratio of alkali activator to fly ash (AA / FA ratio) was constant in all samples and it was 0.8. A 12M NaOH solution was used. The heat treatment temperat...

By Nadira Bušatlić, Ilhan Bušatlić, Nevzet Merdić, Dženana Smajić-Terzić