Sökning: "in situ X-ray diffraction"

Visar resultat 6 - 10 av 114 avhandlingar innehållade orden in situ X-ray diffraction.

1. 6. In-situ phase studies of the Zr-H system

   Författare :Tuerdi Maimaitiyili; Malmö högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Zirconium hydride; synchrotron X-ray diffraction; neutron diffraction; phase transformation; in-situ hydrogen charging; hydrogen related degradation; in situ phase transformation; hydrogen embrittlement; hydrogen charging; zirconium hydride; γ-ZrH; synchrotron X-ray diffraction; neutron diffraction; hydrogen induced degradation;

   Sammanfattning : Zirconium alloys are widely used in the nuclear industry because of their high strength, good corrosion resistance and low neutron absorption cross-section. However, zirconium has strong affinity for hydrogen, which may lead to hydrogen concentration build-up over time during a corrosion reaction when exposed to water. LÄS MER

3. 7. Exploration of Non-Aqueous Metal-O2 Batteries via In Operando X-ray Diffraction

   Författare :Chenjuan Liu; Torbjörn Gustafsson; Laurence Hardwick; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Keywords: lithium-oxygen batteries; sodium-oxygen batteries; metal-air; in operando X-ray diffraction; cathode materials; Kemi med inriktning mot materialkemi; Chemistry with specialization in Materials Chemistry;

   Sammanfattning : Non-aqueous metal-air (Li-O2 and Na-O2) batteries have been emerging as one of the most promising high-energy storage systems to meet the requirements for demanding applications due to their high theoretical specific energy. In the present thesis work, advanced characterization techniques are demonstrated for the exploration of metal-O2 batteries. LÄS MER

4. 8. Fundamental in-situ and ex-situ studies of energy storage related materials including different applications of voltammetry

   Författare :Ulrik Palmqvist; Patrice Millet; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Ni-Cd pocket plate batteries; b-Ni OH 2; b-NiOOH; failures; goethite; surface complexation; Pb II ; Zn II ; Cu II ; Cd II ; in-situ; carbon; nanostructured; voltammetry; X-ray diffraction; electrical test; potentiometry; TEM; chlorination; oorganisk kemi; Inorganic Chemistry;

   Sammanfattning : This thesis is a summary and discussion of eight papers dealing with failures and structural aspects of Ni-Cd industrial pocket plate batteries, applications of voltammetry in adsorption studies on goethite (a-FeOOH) surfaces and synthesis and characterisation of nanostructured carbons. The work consists of different areas of chemistry; electrochemistry, structural chemistry and solution chemistry. LÄS MER

5. 9. Phase transformation and stability studies of the Zr-H system

   Författare :Tuerdi Maimaitiyili; Lars Hallstadius; Malmö högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Zirconium hydride; synchrotron X-ray diffraction; Nuclear materials; phase transformation; in-situ hydrogen charging; hydrogen related degradation; neutron diffraction; powder diffraction; Rietveld analysis; γ-ZrH; hydrogen embrittlement; zirconium hydride; γ-ZrH; synchrotron X-ray diffraction; neutron diffraction; hydrogen charging; in situ phase transformation; hydrogen embrittlement; hydrogen induced degradation;

   Sammanfattning : Zirconium alloys are widely used in the nuclear industry because of their high strength, good corrosion resistance and low neutron absorption cross-section. Zirconium has a strong affinity for hydrogen, however, and if hydrogen concentration builds up, the material will gradually degrade. LÄS MER

7. 10. Stacking faults, deformation-induced martensite and micromechanics of metastable austenite in steels studied by high-energy synchrotron X-ray diffraction

   Författare :Benjamin Neding; Peter Hedström; Dmytro Orlov; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; austenitic stainless steel; deformation-induced martensitic transformation; stacking fault energy; high-energy X-ray diffraction; HEXRD; high-energy X-ray diffraction microscopy; HEDM; medium Mn steel; Teknisk materialvetenskap; Materials Science and Engineering;

   Sammanfattning : Austenitic stainless steels are known for their remarkable corrosion resistance and exhibit a very high ductility and toughness. They posses the face centered cubic crystal structure. LÄS MER