Sökning: "Thermal decomposition"

Visar resultat 1 - 5 av 104 avhandlingar innehållade orden Thermal decomposition.

  1. 1. Partitioned methods for time-dependent thermal fluid-structure interaction

    Detta är en avhandling från Lund University, Faculty of Science, Centre for Mathematical Sciences

    Författare :Azahar Monge; Lunds universitet.; Lund University.; Lunds universitet.; Lund University.; [2018-09]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; thermal FSI; Conjugate heat transfer; Domain decomposition; Time adaptivity; Coupled problems; multirate;

    Sammanfattning : The invention of computers revolutionized the way of doing science and in particular the field of mathematics. Computers were faster than any human mind in doing calculations and they did not make mistakes opening a wide range of possibilities that earlier where in practice uncomputable. LÄS MER

  2. 2. Hierarchical Structuring of Mg2Si1-xSnx Alloys for Lower Thermal Conductivity and Thermal Conductivity as Probe for Structural Characterization

    Detta är en avhandling från ; Chalmers tekniska högskola; Gothenburg

    Författare :Andrey Sizov; [2018]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Rietveld refinement; thermoelectrics; thermal conductivity; Microstructuring; phase separation; structural probing; magnesium silicide-stannide; spinodal decomposition; X-ray diffraction; hot disc;

    Sammanfattning : The thermoelectric effect was discovered nearly 200 years ago, but it started to be utilized for waste heat recovery fairly recently. From the economical point of view, such application requires a cheap and efficient material, which is able to convert heat energy into electricity. LÄS MER

  3. 3. Effects of Irradiation and Thermal Ageing on the Nanoscale Chemistry of Steel Welds

    Detta är en avhandling från ; Chalmers tekniska högskola; Gothenburg

    Författare :Kristina Lindgren; [2018]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; spinodal decomposition; thermal ageing; low alloy steel; reactor pressure vessel; irradiation damage; atom probe tomography; core barrel; clustering;

    Sammanfattning : Structural materials of nuclear power plants degrade during operation due to thermal ageing and irradiation from the reactor core. Effects on the materials are an increase in hardness and tensile strength, and a decrease in ductility and fracture toughness, i. e. embrittlement. LÄS MER

  4. 4. Cellulosic Thermal Insulation with Improved Water Resistance and Fire Retardancy

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Chao Zheng; KTH.; [2018]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; Bio-based; Cellulosic; Fire retardant; Thermal insulation; Fiber- och polymervetenskap; Fibre and Polymer Science;

    Sammanfattning : Sweden is one of the largest countries by area in Europe, and almost 70% of it is covered by forest. These abundant forest resources benefit the Swedish bioeconomy, but the pulp and paper industry is facing the challenge of a decrease in the demand for printing paper due to a significant shift to electronic media; therefore, it is a priority to use pulp to produce alternative value-added products, such as thermal insulating materials in buildings. LÄS MER

  5. 5. (In-)Stability of LiPF6-based Electrolytes for Lithium-ion Batteries

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Susanne Wilken; [2012]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; FTIR; additives; Lithium batteries; Raman; electrolytes; thermal decomposition; NMR spectroscopy;

    Sammanfattning : The state of the art lithium-ion batteries present in most portable electronics consist of the salt LiPF6, organic solvents such as ethylene carbonate and dimethyl carbonate (commonly seen as EC/DMC), and finally, a number of additives - all components enclosed by different kinds of electrode chemistries.Despite their commercial success, all LiPF6 based electrolytes suffer from poor chemical and thermal stability. LÄS MER