Search for dissertations about: "nitrides"

Showing result 21 - 25 of 124 swedish dissertations containing the word nitrides.

  2. 21. Theoretical and experimental studies of ternary and quaternary nitrides for machining and thermoelectric materials

    Author : Robert Pilemalm; Per Eklund; Sergei I Simak; Biplap Sanyal; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; materials science; thin film physics; nitrides; machining; thermoelectrics; materialvetenskap; tunnfilmsfysik; nitrider; metallbearbetning; termoelektricitet;

    Abstract : Nitrides are used as coatings and thin films for a wide range of applications. The study and use of nitrides in the recent decades have shifted towards ternary, quaternary or even higher order (complex) nitrides. READ MORE

  4. 22. GaN, AlGaN, GaNAs and Related Heterostructures Grown by Molecular Beam Epitaxy

    Author : Hyonju Kim; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; surface segregation; GaNAs; plasma-assisted MBE; stacking fault; AlGaN GaN; heterointerface; unintentional impurities; III-nitrides;

    Abstract : This work deals with growth and characterization of III-nitrides and related heterostructures as well as GaNAs alloys grown by plasma assisted molecular beam epitaxy (MBE). The III-nitrides belong to the wide bandgap semiconductors due to their large energy bandgap spanning from 1.9 to 6.2 eV. READ MORE

  5. 23. Aspects of microstructural evolution in chromium steels in high temperature applications

    Author : Åsa Gustafson; KTH; []
    Keywords : Cr-steels; nucleation; coarsening; model; DICTRA; precipitates; carbides; carbo-nitrides; MX; VN; M23C6; TiC; TEM; EFTEM; Curie-temperature;

    Abstract : In this thesis 9-12 % Cr steels, used for high-temperaturecomponents in fossil-fired power plants are considered. Thecreep strength of thees steels depend on their microstructurethat consists of a matrix of tempered lath martensite withdensely distributed precipitates. READ MORE

  6. 24. Optical characterization of dilute nitride semiconductors and related quantum structures

    Author : Morteza Izadifard; G. Yu. Rudko; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Dilute nitrides; optoelectronics; photonics; Optical physics; Optisk fysik;

    Abstract : Dilute nitrides (i.e. READ MORE

  7. 25. Growth and Mechanical Properties of Transition Metal Nitrides and Carbides

    Author : Daniel Edström; Valeriu Chirita; Lars Hultman; Denis Music; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : The atomic-scale dynamical processes at play during film growth cannot be resolved by even the most advanced experimental methods. As such, computational methods, and chiefly classical molecular dynamics, are the only available research tools to study these processes. READ MORE