Sökning: "nuclear materials"

Visar resultat 6 - 10 av 258 avhandlingar innehållade orden nuclear materials.

  1. 6. Sub-grain structure in additive manufactured stainless steel 316L

    Författare :Yuan Zhong; Zhijian Shen; Daqing Cui; Moataz Attallah; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Additive manufacturing; Selective laser melting; Electron beam melting; stainless steel; Oxide dispersion strengthened steel; Cellular structure; Nano-inclusions; Materials Chemistry; materialkemi;

    Sammanfattning : The thesis focuses on exploring the sub-grain structure in stainless steel 316L prepared by additive manufacturing (AM). Two powder-bed based AM methods are involved: selective laser melting (SLM) and electron beam melting (EBM). LÄS MER

  3. 7. Local structure and dynamics of proton and hydride-ion conducting perovskite type oxides

    Författare :Laura Mazzei; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; hydrogen; local coordination; vibrational dynamics; neutron scattering; vibrational spectroscopy; thin films; Perovskite oxides;

    Sammanfattning : Proton and hydride-ion conducting oxides show potential for application in several technological devices, such as solid oxide fuel cells and batteries. However, fundamental properties pertaining to the local structure and conduction mechanisms in these materials are unclear. LÄS MER

  4. 8. Polymeric materials in nuclear power plants : Lifetime prediction, condition monitoring and simulation of ageing

    Författare :Erik Linde; Ulf Gedde; Mikael Hedenqvist; Sue Burnay; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Nuclear power plants generate a significant part of the world’s electrical power consumption. However, many plants are nearing the end of their designed lifetime, and to extend the lifetime it is important to verify that every component can withstand the added service time. This includes polymeric materials, which become brittle with time. LÄS MER

  5. 9. Synthesis, Nuclear Structure, and Magnetic Properties of some Perovskite Oxides

    Författare :Mehreteab Tseggai; Per Nordblad; Roland Tellgren; Torbjörn Gustafsson; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materials science; Magnetic Perovskites; Neutron powder diffraction; SQUID; Synthesis; Nuclear structure; Antiferromagnetism; Ferromagnetism; Superexchange; Double exchange; Colossal magnetoresistance; Materialvetenskap; Materials science; Teknisk materialvetenskap;

    Sammanfattning : Synthesis, nuclear structure, and magnetic properties of the perovskites: Nd0.7-xMgxSr0.3MnO3 (x=0.0, 0. LÄS MER

  7. 10. Cold spray Cr-coated Optimized ZIRLO claddings: an option for accident tolerant fuels

    Författare :Andrea Fazi; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cr coating; atom probe tomography; cold spray; accident tolerant fuel;

    Sammanfattning : Accident tolerant fuel development has started with the aim of providing nuclear fuels able to endure severe accident conditions. Research in this field has also sparked a wave of material renewal in the nuclear industry that had being delayed for the last few decades. LÄS MER