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Št. zadetkov: 8
Notranja oksidacija dvofazne binarne srebrove zlitine s telurjem
Gorazd Kosec, Vasilij Gontarev
Izvirni znanstveni članek
Oznake: srebrove zlitine;telur;mikrostruktura;kristalizacija;
Leto: 2003 Vir: dLib.si Digitalna knjižnica Slovenije
Numerical and experimental analyses of the chemical heterogeneity of a solidifying heavy ductile-cast-iron roller
Karel Stransky, František Kavička, Buhumil Sekanina, Jana Dobrovská, Vasilij Gontarev
Strokovni članek
Oznake: spheroidal graphite cast iron;roller;solidification;chemical and structural heterogeneity;methodology for measurement;
The quality of the working rollers used for rolling rails is determined by the chemical and structural compositions of the material of the rollers and the production technology. It is necessary to cast rollers with significantly improved utility properties, i.e., mainly a high wear resistance and op ...
Leto: 2012 Vir: dLib.si Digitalna knjižnica Slovenije
Arheometalurška raziskava jeklenih ral
Boštjan Godec, Viktor Gerdun, Matej Župančič, Vasilij Gontarev, Jakob Lamut
Strokovni članek
Oznake: arheometalurgija;materiali;pozna antika;železo;ralo;
Predstavljena je raziskava dveh jeklenih ral iz najdišča Sveti Ahac nad Ilirsko Bistrico, ki izvirata iz četrtega do šestega stoletja našega štetja. Izdelana sta bila s kovaškim privarjanjem več plasti jekla, ki je bilo pridobljeno z neposrednim taljenjem v peči in je vsebovalo veliko vključkov žlin ...
Leto: 2000 Vir: dLib.si Digitalna knjižnica Slovenije
Numerical and experimental investigation of the temperature field of a solidifying massive ductile-cast-iron roller
František Kavička, Karel Stransky, Jana Dobrovská, Buhumil Sekanina, Josef Štětina, Vasilij Gontarev
Izvirni znanstveni članek
Oznake: rolling;Spheroidized graphite cast iron (SGI);massive roller;solidification;temperature field;numerical model;
The quality of the working rollers used for rolling rails of different profiles is determined by the chemical and structural composition of the material of the rollers and the production technology The requirements for the quality cannot be ensured without a perfect knowledge of the course of the so ...
Leto: 2012 Vir: dLib.si Digitalna knjižnica Slovenije
The effect of electromagnetic stirring on the crystallization of the concast billets
Karel Stransky, František Kavička, Buhumil Sekanina, Jozef Stetina, Vasilij Gontarev, Jana Dobrovská
Strokovni članek
Oznake: kontinuirno ulivanje;elektromagnetno mešanje;dendritna struktura;kakovost gredic;napake;
Leto: 2011 Vir: dLib.si Digitalna knjižnica Slovenije
Numerical optimization of the method of cooling of a massive casting of ductile cast-iron
František Kavička, Buhumil Sekanina, Jozef Stetina, Karel Stransky, Vasilij Gontarev, Jana Dobrovská
Izvirni znanstveni članek
Oznake: ductile cast-iron;massive casting;cooling;temperature field;numerical model;
An original application of ANSYS simulating the forming of the temperature field of a massive casting from ductile cast-iron during the application various methods of its cooling using steel chills. The numerical model managed to optimize more than one method of cooling but, in addition to that, pro ...
Leto: 2009 Vir: dLib.si Digitalna knjižnica Slovenije
Decarburization mechanism of Fe-Si-Al alloy with antimony addition
Vasilij Gontarev, Hans Jürgen Grabke, Darja Steiner Petrovič, Monika Jenko
Izvirni znanstveni članek
Oznake: decarburization;silicon steels;surface oxidation;antimony;
The mechanism of decarburization process of Fe-Si-Al alloy was investigated onsamples of cold rolled sheets; some of them alloyed with 0.048 wt.% Sb. The decarburization was performed in a ▫$H_2H_2O$▫ gas mixture at 840°C. It was influenced by the oxidation of the surface. Antimony influence of on d ...
Leto: 1998 Vir: dLib.si Digitalna knjižnica Slovenije
Internal oxidation of silver alloys with tellurium, selenium and sulphur
Gorazd Kosec, Ladislav Kosec, Ivan Anžel, Vasilij Gontarev, Borut Kosec, Milan Bizjak
Izvirni znanstveni članek
Oznake: notranja oksidacija;srebro;zlitine;sestavljanje;drobci;internal oxidation;silver;alloys;compound;particle;
Silver alloys with tellurium, selenium and sulphur fulfil the conditions for the internal oxidation. Microstructure of these alloys consists of matrix (dilute solid solution) and particles of intermetallic compounds. Internal oxidation of ternary alloys is very similar to that of the binary alloys, ...
Leto: 2005 Vir: Digitalna knjižnica Univerze v Mariboru (DKUM)
Št. zadetkov: 8
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