Search for dissertations about: "Anghel"

Found 5 swedish dissertations containing the word Anghel.

  2. 1. Studies of transport in oxides on Zr-based materials

    Author : Clara Anghel; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Zirconium; hydrogen; oxygen diffusion; second-phase particle; oxidation; dissociation; hydration; carbon monoxide; adsorption; porosity; Other materials science; Övrig teknisk materialvetenskap;

    Abstract : Zr-based materials have found their main application in the nuclear field having high corrosion resistance and low neutron absorption cross-section. The oxide layer that is formed on the surface of these alloys is meant to be the barrier between the metal and the corrosive environment. READ MORE

  4. 2. Modified oxygen and hydrogen transport in Zr-based oxides

    Author : Clara Anghel; Gunnar Hultquist; Magnus Limbäck; Truls Norby; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Zirconia; Zirconium; Zircaloy; hydrogen and oxygen diffusion; SPP; oxygen dissociating elements; oxidation; dissociation; hydration; CO adsorption; molecular transport; porosity.; Materials science; Teknisk materialvetenskap;

    Abstract : Most metals and alloys in the presence of oxygen and moisture will instantaneously react and form a thin (2-5 nm) surface oxide layer. For further reaction to occur, oxygen ions and/or metal cations often diffuse through the already formed oxide layer. READ MORE

  5. 3. Experimental and theoretical study of post-dryout heat transfer in annuli with flow obstacle

    Author : Ionut Anghel; Henryk Anglart; Dariusz Mikielewicz; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; annulus; flow obstacles; critical heat flux; post-dryout; thermal margins; boiling water reactor; Fysik; Physics;

    Abstract : An experimental study on post dryout heat transfer regime in annuli with flow obstacles wasconducted in the High-pressure Water Test (HWAT) loop at the Royal Institute of Technologyin Stockholm, Sweden. An annulus with flow obstacles, consisting of two concentric heatedpipes (12.7x24. READ MORE

  6. 4. Experimental Study of Post-Dryout Heat Transferin Annuli with Flow Obstacles

    Author : Ionut Gheorghe Anghel; Henryk Anglart; Michele Andreani; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; annulus; post-dryout; temperature distribution; flow obstacles; new measurements; SRA - Energy; SRA - Energi;

    Abstract : An experimental study on post dryout heat transfer regime in annuli with flow obstacles was conducted in the High-pressure Water Test (HWAT) loop at the Royal Institute of Technology in Stockholm, Sweden. An annulus consisting of two concentric heated pipes (12.7x24.3) mm, with total heated length equal to 3650 mm was employed as a test section. READ MORE

  7. 5. Influence of grinding operations on surface integrity and chloride induced stress corrosion cracking of stainless steels

    Author : Nian Zhou; Rachel Pettersson; Ru Lin Peng; Clara Anghel; Per-Lennart Osk Larsson; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Kemi; Chemistry; Steel Forming and Surface Engineering;

    Abstract : Stainless steels were developed in the early 20th century and are used where both the mechanical properties of steels and corrosion resistance are required. There is continuous research to allow stainless steel components to be produced in a more economical way and be used in more harsh environments. READ MORE