Search for dissertations about: "SAED"

Showing result 1 - 5 of 7 swedish dissertations containing the word SAED.

2. 1. Identification of Viscoelastic Materials by Use of Wave Propagation Methods

   Author : Saed Mousavi; Bengt Lundberg; Urmas Valdek; Janne Färm; Uppsala universitet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Engineering physics; Identification; Viscoelastic; Complex modulus; Complex Poisson s ratio; wave; Impact; Teknisk fysik; Engineering physics; Teknisk fysik;

   Abstract : Complex moduli and Poisson’s ratio have been estimated using extensional and torsional wave experiments. The data were used for assessment of linearity and isotropy of two polymers, polymethyl methacrylate (PMMA) and polypropylene (PP). The responses of both materials were found to be close to linear and isotropic. READ MORE

4. 2. Properties in New Complex Perovskite-Related Materials, a Matter of Composition and Structure

   Author : Samrand Shafeie; Gunnar Svensson; Jekabs Grins; John T. S. Irvine; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Perovskite; XANES; XRPD; NPD; TEC; TEM; SEM; TGA; SAED; HREM; thermal expansion; Seebeck coefficient; electronic conductivity; SOFC materials; magnetic susceptibility; Perovskit; XANES; XRPD; NPD; TEC; TEM; SEM; TGA; SAED; HREM; termisk expansion; Seebeck koefficient; elektrisk ledningsförmåga; SOFC material; magnetiska egenskaper; Materials Chemistry; materialkemi;

   Abstract : This PhD thesis presents investigations of perovskite-related compounds in systems of interest for applications in components in solid oxide fuel cells. The compound compositions derive from substitutions in the parent compounds LaCoO3, LaCrO3 and SrFeO3. READ MORE

5. 3. Design and characterization of nanoparticles and their assemblies : Transmission electron microscopy investigations from atomic to mesoscopic length scales

   Author : Arnaud Mayence; Lennart Bergström; Liberato Manna; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; nanoparticles; electron microscopy; Materials Chemistry; materialkemi;

   Abstract : Transmission electron microscopy (TEM) is a powerful and versatile tool for investigating nanomaterials. In this thesis, various transmission electron microscopy techniques are used to study the chemical and structural features of different types of inorganic nanoparticles of well-defined morphologies as well as their assemblies. READ MORE

6. 4. Carbon based Thin Films Prepared by HiPIMS and DCMS

   Author : Susann Schmidt; Lars Hultman; Grzegorz Greczynski; Jörg Neidhardt; Linköpings universitet; []
   Keywords : ;

   Abstract : The present thesis focuses on carbon based thin films prepared by high power impulse magnetron sputtering (HiPIMS) and direct current magnetron sputtering (DCMS). The properties of such thin films can be tailored to an extensive variety; the film microstructure, for example, ranges in the presented work from fully amorphous, graphitic films to fullerene like (FL). READ MORE

7. 5. Structure and Properties Investigations of the La2Co1+z(Ti1-xMgx)1-zO6 Perovskite System

   Author : Samrand Shafeie; Gunnar Svensson; Mari-Ann Einarsrud; Mats Johnsson; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; solid oxide fuel cell; SOFC; LaCoO3; cobaltates; cobalt oxide; perovskite; XANES; XRD; Neutron powder diffraction; thermal expansion; electronic conductivity; magnetism; citrate; electron diffraction; synthesis; phase diagram; spin state; fast fas oxid bränslecell; LaCoO3; koboltoxid; perovskit; XANES; XRD; neutron diffraktion; elektron diffraktion; termisk expansion; elektrisk ledningsförmåga; magnetism; citrat; SOFC; syntes; fasdiagram; spin tillstånd; Solid state chemistry; Fasta tillståndets kemi; Materials chemistry; Materialkemi; Structural Chemistry; strukturkemi; Materials Chemistry; materialkemi;

   Abstract : Perovskite based materials have great potentials for various energy applications and the search for new materials for uses in SOFCs has largely been concentrated to this class of compounds. In this search, we have studied perovskite phases in the system La2Co1+z(Ti1-xMgx)1-zO6, with 0  x 0.9 and z = 0.0, 0. READ MORE