KIRSCHNER Vít VÚTS a.s., Laser Application Center, Svárovská 619, Liberec 11, 460 01, the Czech Republic, vit.kirschner@vuts.cz
Co-authors: BRUTHANSOVÁ Romana ŠVEC Martin DVOŘÁK Libor
Abstract: Laser technologies are among the unconventional methods of heat treatment and machining. Among the biggest advantages of laser quenching (hardening), it can be included high speed and process efficiency, a narrow thermally affected area and the possibility of processing complicated parts in shape that could not be workable with common conventional methods. [..] Read more
WROŃSKA Agata Czestochowa University of Technology, Faculty of Production Engineering and Materials Technology, Institute of Materials Engineering, Czestochowa, Poland, UK
Co-authors: DUDEK Agata NAPADŁEK Wojciech
Abstract: The aim of this study was to examine the effects of surface treatment with high energy sources on the microstructure and properties of austenitic-ferritic stainless steel sintered in dissociated ammonia. The multi-phase sinters examined in the study were prepared from two types of water atomized steel powders: 304L and 434L. [..] Read more
DOBROCKÝ David University of Defence in Brno, Faculty of Military Technology, Brno, Czech Republic, EU
Co-authors: KUSMIČ David
Abstract: The aim of this work is to describe the influence of plasma nitride layers with different case depths which were created in the root of V-notches to notch toughness of 30CrMoV9 steel. The different case depths of nitride layers were achieved by three nitriding processes at temperatures 450 °C, 500 °C and 550 °C. [..] Read more
VONTOROVÁ Jiřina VSB - Technical University of Ostrava, Ostrava, Czech Republic, EU, jirina.vontorova@vsb.cz
Co-authors: BENEŠ David MOHYLA Petr HAVELKA Lukáš
Abstract: Surface treatments of metals are important areas of mechanical engineering. Galvanizing, which is a zinc coating on the steel base material by electrolytic deposition, belongs among the wide range of methods. [..] Read more
PETRŮ Jana VSB - Technical University of Ostrava, Faculty of Mechanical Engineering, Department of Machining, Assembly and Engineering Metrology, Ostrava, Czech Republic, EU
Co-authors: SCHIFFNER Jan ZLÁMAL Tomáš ČEP Robert KRATOCHVÍL Jiří STANČEKOVÁ Danka
Abstract: This article deals with experimental determination of cutting tool wear during machining of Ti6Al4V alloy. This alloy features worsened machining ability that has direct influence on wear intensity and durability of cutting tool during machining. [..] Read more
KOLNEROVÁ Michaela TUL-Technical University of Liberec, Faculty of Mechanical Engineering, Liberec, Czech Republic, EU michaela.kolnerova@tul.cz, jiri.sobotka@tul.cz, pavel.solfronk@tul.cz, lukas.zuzanek@tul.cz
Co-authors: SOBOTKA Jiří SOLFRONK Pavel ZUZÁNEK Lukáš
Abstract: The paper deals with the evaluation of sheets with surface coating on the basis of Zn/Mg/Al and their application possibilities in the automotive industry. Evaluation is carried out by determination adhesive joints strength acc. [..] Read more
GAVENDOVÁ Petra Brno University of Technology, Faculty of Mechanical Engineering, Institute of Materials Science and Engineering, NETME Centre, Brno, Czech Republic, EU
Co-authors: ČÍŽEK Jan DLOUHÝ Ivo ČUPERA Jan HANUSOVÁ Petra
Abstract: CoNiCrAlY bond coats manufactured by the high-velocity oxygen-fuel spraying (HVOF) and cold gas dynamic spraying (CGDS) deposition technique have been investigated and comparison of phase modification is presented in the paper. Even though both techniques accelerate powder particles with high kinetic energy, the resulting coatings differ considerably in their microstructures. [..] Read more
STANCEKOVA Dana University of Zilina, Zilina, Slovakia, EU
Co-authors: SAJGALIK Michal PETRU Jana NAPRSTKOVA Natasa BALAZ Pavol
Abstract: One of very important requirements for measuring devices is fact that measured values of observed quantity will be in specific tolerance zone of actual value also after longer period of use. Deviations of actual value can be caused by several factors – improper handling with devices, inadequate maintenance and storing, aging of materials of which they are made and last but not least, by wear of single parts.The target was to define the way of wear elimination of most faulty parts of dial gauges to obtain the maximum possible lifetime with minimal possible costs. [..] Read more
SMAZALOVÁ Eva University of W est Bohemia, Pilsen, Czech Republic, EU, smazal@ntc.zcu.cz, houdkov@ntc.zcu.cz
Co-authors: HOUDKOVÁ Šárka
Abstract: This paper provides a study of sliding wear behavior of Cr3C2-CoNiCrAlY thermally sprayed coating at room and high temperature - 600°C. Wear testing was realized by linearly reciprocating Ball-on-Flat sliding wear test according to ASTM G133-05, so called fretting test using the tribometer CETR-UMT3. [..] Read more
ELEN Levent Karabuk University, Department of Metallurgy and Materials Engineering, Karabuk, Turkey
Co-authors: ZENGIN Huseyin TUREN Yunus TURAN Muhammet Emre SUN Yavuz AHLATCI Hayrettin
Abstract: In this study, the effects of bismuth additions of 0.2, 0.5 and 1 wt% on microstructure and mechanical properties of AZ91 alloy were examined. A permanent mold casting procedure was carried out to produce the alloy billets under a mixed gas atmosphere of SF6 and CO2. [..] Read more
BUCKI Tomasz Department of Applied Computer Science and Armament Engineering, Faculty of Mechatronics and Mechanical Engineering, Kielce University of Technology, Al. Tysiąclecia P.P. 7, 25-314 Kielce, Poland, EU, tbucki@tu.kielce.pl, rmola@tu.kielce.pl
Co-authors: MOLA Renata BĄK Angelika
Abstract: This paper investigates the oxidation behaviour of aluminized flake graphite cast iron. Aluminized coatings were fabricated by hot-dipping cast iron in a pure Al or AlSi11 bath at 750 oC for 20 min. [..] Read more
PASIECZYNSKI Łukasz Firma Handlowa Barwa Jaroslaw Czajkowski, Kielce, Poland, EU
Co-authors: RADEK Norbert RADZISZEWSKA-WOLINSKA Jolanta
Abstract: The article is focused on corrosion problems in the rolling stock. Various factors which determine speed intensity of a corrosion process are presented. [..] Read more
ŠŤASTNÝ Vladislav VSB - Technical University of Ostrava, Ostrava, Czech Republic, EU, pavel.svec@vsb.cz
Co-authors: ŠVEC Pavel DAVID Jiří GARZINOVÁ Romana
Abstract: This paper describes experiments for the development of methods of non-destructive, non-contact surface diagnostics. This is oriented on technical systems in metallurgical operations with usage of laser scanners and digital image processing techniques. [..] Read more
SZABÓ Juraj Institute of Materials Research of Slovak Academy of Sciences, Kosice, Slovakia, EU
Co-authors: ĎURIŠIN Juraj SAKSL Karol BALGA Dušan OSTROUSHKO Dimitrii
Abstract: The study compares the microstructure of the dispersion strengthened Cu – MgO composites prepared by thermo-chemical transformations of precursors and mechanical milling followed by spark plasma sintering technique. The effect of two different MgO contents (3 and 5 vol.%) on formation and stability of the copper matrix nanostructure is analysed. [..] Read more
BROZEK Vlastimil Institute of Plasma Physics ASCR v.v.i., Prague, Czech Republic, EU
Co-authors: KOLISKO Jiri KUBATIK Tomas Frantisek MASTNY Libor POKORNY Petr TEJ Petr
Abstract: The abstract is describing results of characteristics studies of ceramic coatings made from corundum-baddeleyite ceramics, on deposit, boronized corrosion-proof steel AISI 303. Boronizing of steel surface is a technology known for tenths of years. [..] Read more
NOVÁKOVÁ Radka University of Chemistry and Technology Prague – Department of Metals and Corrosion Engineering, Prague, Czech Republic, EU
Co-authors: KOUŘIL Milan STOULIL Jan SPLÍTEK Karel ŠPINAR Vojtěch DOBIÁŠ Daniel POKORNÝ Petr
Abstract: Reinforced concrete service-life depends on a transport rate of corrosion stimulators, especially chlorides, towards the reinforcement through concrete cover layer. Traditional migration tests are able to state the effective diffusion coefficient; however they do not provide the information about the microstructure and its development in time. [..] Read more
DEPCZYŃSKI Wojciech Kielce University of Technology, Poland, EU, wdep@tu.kielce.pl, p.mlynarczyk@tu.kielce.pl, sspadlo@tu.kielce.pl, Ewelina.ziach@gmail.com, hepner1@o2.pl
Co-authors: MŁYNARCZYK Piotr SPADŁO Sławomir ZIACH Ewelina HEPNER Piotr
Abstract: The paper describes the study of porous layers formation process made with Fe on the carbon steel base. To form the layer there was used method of consisting combination of pulse microwelding paste layer on the S235 steel surface. [..] Read more
ZUZÁNEK Lukáš Technical University of Liberec, Liberec, Czech Republic, EU
Co-authors: ŘIDKÝ Ondřej SOLFRONK Pavel KOLNEROVÁ Michaela SOBOTKA Jiří
Abstract: The Zn-Mg coatings are considered as the next generation of steel covering that should be used in automotive industry since they improve the corrosion resistance of the base material. The weakness of this coating lies in its higher hardness and lesser ability of plastic deformation in comparison to the purely zinc coatings. [..] Read more
MÁLEK Václav Technical University of Liberec, Department of Materials, Faculty of Engineering, Liberec
Co-authors: BAKALOVA Totka VOLESKÝ Lukáš
Abstract: Currently, the methods of material coating by CVD (Chemical Vapour Deposition) and PVD (Physical Vapour Deposition) are expanding considerably. These methods are used in engineering and other industries. [..] Read more
ANTOSZEWSKI Krzysztof University of Technology in Kielce, Department of Applied Computer Science and Armament Engineering, Kielce, Poland, EU
Co-authors: RADEK Norbert DUDEK Agata
Abstract: The paper presents the results of investigations into the microstructure of coatings made from bearing alloys on the bronze substrate. This option is used for slide bearing bushings to improve break-in parameters. [..] Read more
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