Search for dissertations about: "electron beam"

Showing result 16 - 20 of 449 swedish dissertations containing the words electron beam.

  2. 16. Electron beam melting of Alloy 718 : Influence of process parameters on the microstructure

    Author : Paria Karimi Neghlani; Joel Andersson; Per Nylén; Joakim Ålgårdh; Högskolan Väst; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Additive manufacturing; Powder bed fusion; Electron beam melting; Part’s orientation; Microstructure development; Single track; Energy input; Focus offset; Geometrical features; Alloy 718; Manufacturing and materials engineering; Produktions- och materialteknik; Production Technology; Produktionsteknik;

    Abstract : Additive manufacturing (AM) is the name given to the technology of building 3D parts by adding layer-by-layer of materials, including metals, plastics, concrete, etc. Of the different types of AM techniques, electron beam melting (EBM), as a powder bed fusion technology, has been used in this study. READ MORE

  4. 17. Characterisation of Nickel-Based Superalloys Manufactued by Electron Beam Melting

    Author : Annika Strondl; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEM; electron beam melting; APFIM; EBSD; XRD; DTA; nickel-based superalloys; SEM; additive manufacturing; EDS;

    Abstract : Nickel-based superalloys have been manufactured by electron beam melting (EBM). EBM is an additive manufacturing process for direct production of metal parts. The part is build up by successive melting of metal powder layers in a vacuum chamber using electron beam. READ MORE

  5. 18. Electron Transport in Semiconductor Nanowires

    Author : Mikael Björk; Fasta tillståndets fysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; heterostructures; single electron transistors; resonant tunneling; quantum dots; weak antilocalization; Halvledarfysik; field effect transistors; Semiconductory physics; Fysicumarkivet A:2004:Björk; Low-dimensional structures; nanowires; chemical beam epitaxy;

    Abstract : In this thesis, semiconductor nanowires are studied from the point of view of growth and electrical properties. The growth of nanowires is done by chemical beam epitaxy (CBE), an ultra-high vacuum technique allowing a precise control of precursor deposition and low growth rates. READ MORE

  6. 19. Investigations of electron beam-plasma interaction

    Author : Herbert Gunell; KTH; []
    Keywords : ;

    Abstract : .... READ MORE

  7. 20. Direct Nanoprototyping of Functional Materials via Focused Electron Beam

    Author : Anastasia Riazanova; Lyubov M. Belova; Cornelis W. Hagen; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; EBID; nanoprototyping; nanopatterning; nanoscale; nanostructure; purification; Au; Co; SiO2; dimethyl gold acetylacetonate; dicobalt octacarbonyl; TEOS; Dual Beam;

    Abstract : During recent years the demand for nanoscale materials with tailor-made functional properties as bulk species, is continuously and progressively rising for such fields as e.g. micro- and nano-electronics, plasmonics, spintronics, bio-technology, bio-sensing and life sciences. READ MORE