Centrum nových technologií a materiálů / New Technology and Materials Centre (CTM)


Recent Submissions

Rohan, Eduard , Cimrman, Robert
Acoustic waves in fluid-saturated periodic scaffolds

We consider acoustic wave propagation in periodic scaffolds saturated by inviscid fluid at rest. To analyze the wave dispersion, two approaches are examined: the periodic homogenization (PH) and the Floquet-Bloch wave decomposition (FB). While PH gives dispersion-less response, the FB method ...

Bartoň Klufová, Pavla , Tittel, Jan , Vostřák, Marek , Jansa, Zdeněk , Kříž, Antonín
Corrosion resistance of laser-deposited composite copper-basalt overlay

This paper deals with an assessment of the corrosion resistance of copper-basalt composite cladded by laser. The filler powder for laser overlaying was a mixture of high-purity copper powder Oerlikon METCO 55 consisting of 45–90 µm particles and a basalt powder comprising particles 50–2...

Bartoň Klufová, Pavla , Vostřák, Marek , Kříž, Antonín
Chemical heterogeneity of Inconel 625 overlay with an increased molybdenum content and its evaluation using the potentiodynamic corrosion test

The paper focuses on a detailed analysis of chemical heterogeneity of Inconel 625 overlays with an increased molybdenum content deposited by laser cladding. Fifteen samples of laser overlays on S355J2 steel were prepared, each with an area of 90×140 mm. The thickness of the steel&#...

Rieger, David , Pola, Michal , Franče, Petr , Kadlec, Jaroslav , Kovářík, Tomáš , Kopačka, Pavel
The effect of short carbon fibers on rheological behaviour and mechanical properties of metakaolin-slag geopolymer binder

This study investigates the effects of short carbon fibers addition on rheological behaviour of geopolymer binder and final mechanical strength of prepared composite. The pure geopolymer binder and variously carbon fiber reinforced composites were tested. The pure geopolymer binder was synthesize...

Kovářík, Tomáš , Hájek, Jiří
Porous geopolymers: processing routes and properties

Cellular ceramics constitute a specific class of materials containing a high level of porosity, greater than 60 vol%, which are characterized by the presence of three-dimensionally arranged open and/or closed cells. Because of their structure, cellular ceramics exhibit a unique combination&#...