Nacionalni portal odprte znanosti

Oznake: alkalijsko aktivirani materiali;geopolimeri;visoka temperatura;odpornost;pene;odprti dostop;alkali activated materials;geopolymers;high temperature;resistance;foams;open access;

Alkali-activated foams (AAFs) present one of the most promising materials for use in the construction sector. Their main advantages lie in their utilization of waste material and their ability to form at temperatures well below 100 °C, while still competing in performance with foamed glass or cerami ...

Leto: 2021 Vir: Zavod za gradbeništvo Slovenije (ZAG)

Evaluation of fly ash-based alkali activated foams at room and elevated temperatures

Katja Traven, Mark Češnovar, Srečo D. Škapin, Vilma Ducman

Objavljeni znanstveni prispevek na konferenci

Oznake: lahek porozen izolacijski material;alkalijsko aktivirani materiali;mikrostrukturna analiza;lightweight porous insulating material;alkali activated materials;microstructural analysis;

Alkali activated materials (AAM) are, in their broadest classification, any binder systems derived by the reaction of an alkali metal source (silicates, alkali hydroxides, carbonates , sulphates) with a solid, amorphous alumosilicate powder (found in precursors such as slag, fly ash and bottom ash). ...

Leto: 2020 Vir: Zavod za gradbeništvo Slovenije (ZAG)

Phase relations in the Bi[sub]2O[sub]3–Mn[sub]2O[sub]3–M[sub]2O[sub]3 (M=Fe, Al, and Ga) pseudoternary systems

Srečo D. Škapin, Amalija Golobič, Matjaž Spreitzer, Danilo Suvorov

Izvirni znanstveni članek

Oznake: elektronska keramika;electronic ceramics;phase relations;phase diagram;fazni diagram;

This study establishes the subsolidus phase relations in the Bi₂O₃–Mn₂O₃–M₂O₃ (M = Fe, Al, and Ga) systems at 770°C in an oxidizing air environment, with a specific focus on identifying of phase stability and extension of solid solubility of new solid solutions. The pseudoternary nature of these sys ...

Leto: 2024 Vir: Fakulteta za kemijo in kemijsko tehnologijo (UL FKKT)

Effect of a foaming agent and its morphology on the foaming behaviour, cell-size distribution and microstructural uniformity of closed-cell aluminium foams

Varužan Kevorkijan, Srečo D. Škapin, Irena Paulin, Uroš Kovačec, Monika Jenko

Izvirni znanstveni članek

Oznake: aluminium foams;foaming agents;microstructure;model;

A quantitative evaluation of the microstructure of aluminium foams and, particularly, any quantitative comparison is a very demanding and complex issue. In this work, the cell-size distribution (CSD) was proposed as the most efficient approach for their assessment. The foams were made by the powder ...

Leto: 2012 Vir: dLib.si Digitalna knjižnica Slovenije

Crystal structures of CaLa[sub]8Ti[sub]9O[sub](31) and Ca[sub]2La[sub]4Ti[sub]6[sub](20) determined from powder diffraction data

Katarina Stare, Radovan Černý, Srečo D. Škapin, Danilo Suvorov, Anton Meden

Izvirni znanstveni članek

Oznake: keramika;lantanove spojine;titanove spojine;rentgenska analiza;

Crystal structures of CaLasub8Tisub9Osub(31) and Casub2Lasub4Tisub6sub(20) determined from powder diffraction data

Leto: 2011 Vir: dLib.si Digitalna knjižnica Slovenije

Synthesis and characterisation of closed cells aluminium foams containing dolomite powder as foaming agent

Irena Paulin, Borivoj Šuštaršič, Monika Jenko, Varužan Kevorkijan, Srečo D. Škapin

Izvirni znanstveni članek

Oznake: closed cells aluminium foams;dolomite particles as foaming agent;powder metallurgy;melt route;foaming efficiency;mechanical properties;

In this work, the viability of dolomite powder as cost-effective alternative to TiH[sub]2 foaming agent was investigated. Closed cells aluminium foam samples were prepared starts from solid, foamable precursors synthesized by powder metallurgy and melt route. Precursors obtained by melt route were m ...

Leto: 2010 Vir: dLib.si Digitalna knjižnica Slovenije

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