Sökning: "thermal oxides"

Visar resultat 1 - 5 av 89 avhandlingar innehållade orden thermal oxides.

  1. 1. Thermal Barrier Coatings Durability Assessment and Life Prediction

    Detta är en avhandling från Linköping : Linköping University Electronic Press

    Författare :Robert Eriksson; Linköpings universitet.; Linköpings universitet.; [2013]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Thermal barrier coating (TBC) systems are coating systems containing a metallic bond coat and a ceramic top coat. TBCs are used in gas turbines for thermal insulation and oxidation resistance. LÄS MER

  2. 2. Oxy-Fuel Combustion - The Control of Nitrogen Oxides

    Detta är en avhandling från ; Chalmers tekniska högskola; Gothenburg

    Författare :Fredrik Normann; [2010]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; oxy-fuel; NOx; O2 CO2; combustion; emission; nitrogen oxides;

    Sammanfattning : Oxy-fuel combustion is one of the main candidates for carbon dioxide capture from power plants. In oxy-fuel combustion, oxygen diluted with recycled flue gas oxidizes the fuel. The elimination of air-borne nitrogen generates a flue gas that mainly consists of carbon dioxide and water. LÄS MER

  3. 3. Electrical properties of thermal oxides on SiC manufactured in an alumina furnace

    Detta är en avhandling från ; Chalmers tekniska högskola; Gothenburg

    Författare :Fredrik Allerstam; [2006]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; MOSFET; 6H-SiC; 4H-SiC; Silicon carbide; MOS; TDRC; CV; thermal dielectric relaxation current; interface states;

    Sammanfattning : A process to achieve high inversion channel mobility in 4H-SiC MOSFETs is needed to enable manufacturing of devices for high power applications. In this thesis, investigations on the electrical properties of oxides produced in an alumina furnace are presented. LÄS MER

  4. 4. Use of local electrochemical techniques for corrosion studies of stainless steels

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Nuria Fuertes; KTH.; [2016]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Stainless steel; passive film; thermal oxides; work function; pickling; SKPFM; SVET; XPS; AES; Materials Science and Engineering; Teknisk materialvetenskap;

    Sammanfattning : The excellent corrosion resistance of stainless steels arises from the presence of a passive film on its surface. Above 10.5wt% Cr a chromium oxide of 1-3 nm is formed on the surface of the metal that in case of damage will reform and hinder further dissolution of the metal. LÄS MER

  5. 5. Investigations of the Kinetics of Reduction and Reduction/Carburization of NiO-WO3 Precursors

    Detta är en avhandling från Stockholm : KTH

    Författare :Hesham M. Ahmed; KTH.; [2010]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TECHNOLOGY Chemical engineering Metallurgical process and manufacturing engineering Metallurgical process engineering; TEKNIKVETENSKAP Kemiteknik Metallurgisk process- och produktionsteknik Metallurgisk processteknik; Reduction; Reduction-Carburization; Gas-solid Reactions; Kinetics; Hydrogen; Methane; Thermogravimetric analysis; Fluidized bed; Simulation; Thermal diffusivity; Thermal conductivity; Laser flash; Process Metallurgy; Processmetallurgi;

    Sammanfattning : Kinetic studies of reduction of the mixtures of NiO and WO3 having different Ni/(Ni+W) molar ratios in flowing hydrogen gas were investigated by means of Thermo Gravimetric Analysis (TGA), Fluidized Bed (FB) technique as well as Thermal diffusivity measurements under isothermal conditions. In the case of TGA, the reaction progress was monitored by mass loss, while evolved gas analysis by a gas chromatograph was the indicator of the reaction progress in the case of FB. LÄS MER