Search for dissertations about: "GD-OES"

Showing result 1 - 5 of 6 swedish dissertations containing the word GD-OES.

  2. 1. Microstructure of Zirconium Alloys Oxidized in Steam

    Author : Pia Tejland; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; EDX; ADF; TEM; Zircaloy-2; FIB-SEM; STEM; GD-OES; SPP; SEM; Zirconium; HAADF;

    Abstract : Zirconium alloys are widely used in nuclear reactors as fuel cladding tubes because of their low thermal neutron capture cross-section, good corrosion properties and satisfactory mechanical properties. However, the main limiting factor of these materials is the oxidation behavior. READ MORE

  4. 2. Surface characterization of the chromium hydroxide and basic calcic deposition layers formed on the steel cathode in the chlorate production process

    Author : Annika Ahlberg Tidblad; KTH; []
    Keywords : ;

    Abstract : During technical service, the surface of the steel cathodein the chlorate production process changes with respect tochemical composition and morphology. Deposition of insolublespecies from the electrolyte and corrosion products from thebase metal accumulate and form surface layers that influencethe cathode activity with regards to hydrogen evolution, theprimary reaction, as well as to various parasitic reactions. READ MORE

  5. 3. Furnace Wall Corrosion in a Wood-fired Boiler

    Author : Yousef Alipour; Pamela Henderson; Mikko Hupa; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; High Temperature Corrosion; Used-wood Fired Boilers; Furnace Wall Corrosion; Cl-induced Corrosion; 16Mo3; Nickel-based Alloys; FeCrAl Alloys; Fuel Additive; Sewage Sludge; >Thermodynamics Modelling; Högtemperaturkorrosion; Returträ Förbränningspannor; Eldstad Korrosion; klor-inducerad korrosion; 16Mo3; Nickelbaslegeringar; FeCrAl-legeringar; Bränsletillsatser; Avloppsslam; Termodynamik Modellering; Kemi; Chemistry;

    Abstract : The use of renewable wood-based fuel has been increasing in the last few decades because it is said to be carbon neutral. However, wood-based fuel, and especially used wood (also known as recycled wood or waste wood), is more corrosive than virgin wood (forest fuel), because of higher amounts of chlorine and heavy metals. READ MORE

  6. 4. High-temperature corrosion properties of chromia- and alumina-forming alloys

    Author : Tommy Sand; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; High-temperature corrosion; Alumina scale; Chromia scale; Cr-evaporation; Nitridation; Oxidation;

    Abstract : Electricity production, transportation, and manufacturing industry are some of the largest sources of greenhouse gas emissions. In many cases, these processes are carried out at high temperature and energy efficiency is limited by material degradation, so-called ‘high-temperature corrosion’. READ MORE

  7. 5. Adhesion in the wheel-rail contact under contaminated conditions

    Author : Yi Zhu; Ulf Olofsson; Ines Lopez Arteaga; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; adhesion; wheel-rail contact; contaminants; rough surfaces;

    Abstract : Railway vehicles require a certain level of adhesion between wheel and rail to operate efficiently, reliably, and economically. Different levels of adhesion are needed depending on the vehicle running conditions. READ MORE