Today almost all manufacturers of dental materials in their certificates of quality of material give its chemical composition, mechanical properties, process ability in aesthetic characteristics while informations about thermal properties are not available.Within the work measurements of the thermal properties of five selected, in daily dental prac...

By Borut Kosec, Mateja Vodlan, Blaž Karpe, Aleš Nagode, Milan Bizjak, Igor Kopač, Alenka Pavlič, Igor Budak, Tatjana Puškar, Henry Taubmann, Mirko Gojić

In this work, industrial control technical measurements of the heat treatment of high chromium steel (HCS) rolls is presented.Measurements were carried out on the gas fired car bottom chamber furnace Bosio PP-KP 70/1150 in the company Valji d.o.o., Štore, Slovenia. Temperature measurements of the individual heating zones of the furnace, roll...

By Blaž Karpe, Simon Rečnik, Aleš Nagode, Borut Kosec, Sergej Novak, Stjepan Kožuh

FeCrAl alloys have good oxidation resistance at elevated temperature owing to the formation of a continuous Al2O3 surface film, which acts as an oxygen diffusion barrier. The aim of the present study was to investigate the early stages of protective oxide layer formation and its growth on specially prepared commercial FeCrAl alloys, Kanthal AF (K-A...

By Stojana Veskovič, Milan Bizjak, Blaž Karpe, Aleš Nagode, Samo Smolej, Janez Kovač, Gorazd Kosec

Shape memory alloys (SMAs) belong to the group of advanced functional materials for numerous technical applications. Among many known Cu-based shape memory alloys, Cu–Al–Mn ternary alloys are characterized by a combination of good shape memory properties and excellent ductility which makes them commercially attractive.In this work the C...

By Dragan Manasijević, Tamara Holjevac-Grgurić, Ljubiša Balanović, Uroš Stamenković, Radiša Todorović, Milan Gorgievski1, Mirko Gojić

In conducted research was made a characterisation of microstructure and powder NiCrAlY, before and after applying on the base material. Coating was carried out by using HVOF Diamond Jet procedure, which uses the kinetic energy of the metal particles produced by on explosion of combustible gases. Characterisation was based on chemical analysis of me...

By Milenko Rimac, Mirsada Oruč, Gorazd Kosec

Samples based on talc with 15 % of zeolite from Zlatokop, Serbia, sintered at 1200 ºC were prepared and tested in condition of cavitation erosion. The ultrasonic vibratory cavitation set up with stationary specimen was used. Mass loss was measured and degradation level of the samples using image analysis and Young modulus of elasticity was mon...

By Jelena Majstorović, Sanja Martinović, Milica Vlahović, Marina Dojčinović, Marko Pavlović, Tatjana Volkov Husović

The paper examined the conventional castables composed of a mixture of high aluminate cement with 70% Al2O3, chamotte waste with 42% Al2O3 and brick clay ,,Rapajlo“. The influence of particle size distribution on density, porosity, water absorption, modulus of rapture and cold crashing strength was investigated. Particle size distribution was...

By Marina Jovanović, Adnan Mujkanović, Nadira Bušatlić

The physical-mechanical properties of concrete with nanosilica were experimentally studied. Nanosilica in powder form was used as a partial replacement of cement at dosage of 3 and 6 wt.%. The experimental results show that the compressive strengths of concretes with nanosilica particles were all higher than those of reference concretes at ages 1, ...

By Adnan Mujkanović, Marina Jovanović, Amel Zahirović

Parameter monitoring and testing of explosive substances under certain conditions, as well as control of raw materials used in the production process, contributes to obtaining the finest quality product.The aim of this paper was to test the key parameters in the process of explosive production and compare the results with the standard (reference) v...

By Šefkija Botonjić, Azra Halilović, Irma Ramić

Rational choice and the use of appropriate packaging materials and types of packaging influence the preservation of the qualitative characteristics of the product as well as on the sustainability of the packaged content [1]. Based on testing the thicknesses of different types of materials, it is possible to make the right choice for packaging certa...

By Ajka Aljilji, Nebija Aljilji