A5046024756- Hydrogen embrittlement and corrosion behaviors in metals
- Nuclear Materials and Properties
- Corrosion Behavior and Inhibition
- Fusion materials and technologies
- Nuclear reactor physics and engineering
- Concrete Corrosion and Durability
- Subcritical and Supercritical Water Processes
- Petroleum Processing and Analysis
- Diamond and Carbon-based Materials Research
- Analytical Chemistry and Chromatography
- Fuel Cells and Related Materials
- High-Temperature Coating Behaviors
- Radioactive element chemistry and processing
- Inorganic and Organometallic Chemistry
- Metal and Thin Film Mechanics
- Biodiesel Production and Applications
- Electrochemical Analysis and Applications
- Coal Combustion and Slurry Processing
- Heat transfer and supercritical fluids
- Thermal and Kinetic Analysis
- Geotechnical and Geomechanical Engineering
- Material Properties and Failure Mechanisms
- Lubricants and Their Additives
- Advanced Materials Characterization Techniques
- Semiconductor materials and devices
University of Chemistry and Technology, Prague
2015-2024
Institute of Chemical Technology
1976-2007
Institute of Physical Energetics
2007
Rice University
1995
Gas Technology Institute
1977-1978
Ethanol–gasoline blends (EGBs) can easily absorb large amounts of water because the presence ethanol. Acidic compounds and ions be dissolved in water, these substances have corrosive effects on metallic construction materials. With increasing content ethanol fuels, conductivity ability fuel to increases, resulting is becoming more corrosive. In this work, we tested E10, E40, E60, E85, E100 fuels that were prepared laboratory. These purposely contaminated with trace acidic substances. The aim...
Bioethanol added into gasolines significantly changes the physical and chemical properties of resulting fuels can have a considerable influence on their overall thermo-oxidative stability. During fuel oxidation, different oxidation products such as water, acidic substances, peroxides are formed these corrosive effects metallic construction materials storage transportation equipment, engines, lines automobiles, etc. In this work, we tested laboratory prepared ethanol–gasoline blends (EGBs)...
Nowadays, bioalcohols are promising renewable alternative fuels to gasoline in road transport. One of the most crucial issues many alcohol is limited information about their compatibility with fuel line materials such as steel. This study aims evaluate corrosion aggressiveness alcohol–gasoline blends mild steel and stainless Two blend types were tested: ethanol–gasoline butanol–gasoline blends. These tested pure (noncontaminated) contaminated forms. The studies performed using...
Electrochemical techniques (potentiodynamic polarization curves and electrochemical impedance spectroscoy (EIS) were used to study the effect of dibenzylsulfoxide adsorption on dissolution iron in 5% hydrochloric acid. To discuss different proposed mechanisms at surface a quantum chemical topological method was used, which is suitable for studying interaction organic molecules with metal surfaces. Based results modeling, followed by reduction sulfide most favorable. EIS shows possible has...
In this work, we demonstrate and describe an effective method of protecting zirconium fuel cladding against oxygen hydrogen uptake at both accident working temperatures in water-cooled nuclear reactor environments. Zr alloy samples were coated with nanocrystalline diamond (NCD) layers different thicknesses, grown a microwave plasma chemical vapor deposition apparatus. addition to showing that such NCD layer prevents the from directly interacting water, show carbon released film enters...
Ethanol produced from renewable sources (i.e., bioethanol) is a first-generation biofuel that currently being added as biocomponent into gasolines. Mixtures of ethanol and gasoline are designated ethanol-gasoline blends (EGBs). has high polarity moisture affinity, which considerably influence the properties resulting EGBs including their aggressiveness to many metallic nonmetallic materials. The corrosion can be minimized by suitable inhibitors. In this study, we tested three different...
Recent research indicates that one of the leading candidates for Accident Tolerant Fuels (ATF) are chromium-based coatings deposited on commercially used zirconium alloys. The seem to improve corrosion kinetics underlying in both primary water and steam, where fails meet safety requirements. It is well known can be negatively influenced by high concentrations lithium ions. To evaluate effect behavior alloys containing elevated lithium, Cr CrN/Cr multilayer coated Zr1Nb alloy was tested...
Laser Shock Peening (LSP) is a surface treatment technique for metallic materials. It induces plastic deformation at the of up to around 1 mm in depth. This process introduces residual stresses that lead strain hardening, and potentially improvements fatigue, stress corrosion cracking (SCC) general behaviour many, but not all, corrosive media. In this paper, two specimens made AISI 304L stainless steel, one LSP-treated un-treated, were tested 280 °C 8 MPa VVER (or PWR) primary circuit water...