Search for dissertations about: "Ceramic composites"
Showing result 16 - 20 of 29 swedish dissertations containing the words Ceramic composites.
-
16. High-entropy boron-carbide and its composites
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
-
17. Processing and Properties of zirconia-CNT composites
Abstract : In the last decades there has been growing interest in developing ceramic materials with high fracture toughness (KIc) and strength for structural applications. In the specific case of 3 mol % yttria-doped tetragonal zirconia (3Y-TZP), K_Ic can be increased by promoting phase transformation from tetragonal (t) to monoclinic (m) phase in front of a propagating crack tip referred to as transformation toughening. READ MORE
-
18. Intermediate Temperature Solid Ionic Conductors and Fuel Cells
Abstract : Novel solid proton conductors based on oxyacid salts and salt-ceramic composites and intermediate temperature fuel cells have been developed in this thesis work. The discovery of proton conduction in these materials introduces a new concept of proton conductors and starts a new research field - Intermediate Temperature Solid Proton Conductors and Fuel Cells. READ MORE
-
19. Micromechanics approach to stiffness characterization of woven composites
Abstract : Thesis consider the stiffness of woven composites, methods of its calculation and stiffness reduction due to damage accumulation during the service. First, reliable methods for stiffness calculation of undamaged woven composites are considered. There are a large amount of simple approximate methods available in literature. READ MORE
-
20. Silicon Carbide Reinforced Alumina and Mullite Ceramics
Abstract : The aim of this work was to develop homogeneous ceramic nanocomposite materials with good thermal and structural stability as well as good mechanical properties. The development of microstructure was related to the material properties. READ MORE