Search for dissertations about: "Materialteknik"

Showing result 1 - 5 of 2679 swedish dissertations containing the word Materialteknik.

  1. 1. High-entropy boron-carbide and its composites

    Author : Hanzhu Zhang; Farid Akhtar; Peizhong Feng; Yong Zhang; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Engineering Materials; Materialteknik;

    Abstract : High-entropy alloy (HEA) is a multicomponent alloy material that contains five or more principal elements in equi- or near equi-atomic ratios. The entropy stabilisation leads to the formation of a crystalline solid solution accommodating the principal elements. READ MORE

  2. 2. Synthesis of metallic/high entropy ceramic composite and a study of the phase transformation mechanism

    Author : Hanzhu Zhang; Farid Akhtar; Peizhong Feng; Sheng Guo; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Engineering Materials; Materialteknik;

    Abstract : .... READ MORE

  3. 3. Microstructure of Carbon Fibres for Multifunctional Composites: 3D Distribution and Configuration of Atoms

    Author : Marcus Johansen; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; multifunctional composites; microstructure; synchrotron hard X-ray photoelectron spectroscopy; carbon fibres; energy storage; atom probe tomography; heteroatoms;

    Abstract : Lightweight energy storage is a must for increased driving range of electric vehicles. “Mass-less” energy storage can be achieved by directly storing energy in structural components. READ MORE

  4. 4. Heterogeneous deformation of multi-phase engineering materials - an in-situ neutron diffraction study

    Author : Nitesh Raj Jaladurgam; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Eutectic high entropy alloys; in-situ neutron diffraction; Deformation mechanisms; Superalloys; Electron microscopy;

    Abstract : Gas turbines are complex power generation systems used in aerospace or land-based-power stations. Materials such as Ni-base superalloys are involved in the combustion zone of these machines, which continuously experiences harsh environments with loading at high temperatures. READ MORE

  5. 5. Nanocomposites for Use in Sliding Electrical Contacts

    Author : Benny André; Urban Wiklund; Staffan Jacobson; Kenneth Holmberg; Uppsala universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; tribology; materials science; Materialvetenskap; Materials Science; Engineering Science with specialization in Materials Science; Teknisk fysik med inriktning mot materialvetenskap; Teknisk fysik med inriktning mot tribomaterial; Engineering Science with specialization in Tribo Materials;

    Abstract : In this thesis nanocomposite materials for use in high performance electrical contacts are tested. Self mating silver as coatings on cupper substrates are the most used material combination in power connectors today. In this work two new concepts were tested. READ MORE