Search for dissertations about: "microstructure technology"

Showing result 1 - 5 of 630 swedish dissertations containing the words microstructure technology.

  1. 1. The Functional Microstructure of Al/AlOx/Al Tunnel Junctions

    University dissertation from Chalmers University of Technology

    Author : Samira Mousavi Nik; Chalmers tekniska högskola.; Chalmers University of Technology.; [2013]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Microstructure; Superconducting Tunnel Junctions; AlOx Tunnel Barriers; Interfaces; Transmission Electron Microscopy; Imaging; Spectroscopy; Grain Growth.;

    Abstract : Josephson junction as a novel superconducting electronic component plays an important role in most small-scale superconducting systems. Particularly the Al/AlOx/Al tunnel junction, a high-performance junction made with a well-established microfabrication technology, is widely used as a building block of many quantum circuits. READ MORE

  2. 2. Microstructure and mechanical properties of Ti-6Al-4V welds produced with different processes

    University dissertation from Chalmers University of Technology

    Author : Sakari Tolvanen; Chalmers tekniska högskola.; Chalmers University of Technology.; [2016]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fatigue; defects; porosity; welding; Ti-6Al-4V; microstructure;

    Abstract : Titanium alloys are widely used for components in the fan and compressor sections of aeroengines mainly because of their superior strength-to-weight ratio. Large static compressor components can be manufactured by welding together smaller subcomponents, which has potential to provide benefits such as higher buy-to-fly ratio and improved performance of the components. READ MORE

  3. 3. Effects on Machinability due to Microstructure Variations in Case Hardening Steel

    University dissertation from Chalmers University of Technology

    Author : Karin Björkeborn; Chalmers tekniska högskola.; Chalmers University of Technology.; [2008]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Övrig bearbetning sammanfogning; Other processing assembly; Machinability; Case Hardening Steel; Microstructure; Pearlite Nodular Size; Short-term test; Chip breakability.;

    Abstract : Typical products made of case hardening steel are transmission parts like gear wheels, pinions and crown wheels. Case hardening produces a carbon-rich surface and provides the parts with both enhanced hardness and fatigue life. READ MORE

  4. 4. On Thermal Conductivity and Strength in Compacted Graphite Irons : Influence of Temperature and Microstructure

    University dissertation from Göteborg : Chalmers Reproservice

    Author : Martin Selin; Högskolan i Jönköping.; Chalmers tekniska högskola.; Chalmers University of Technology.; [2010]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TECHNOLOGY Materials science; TEKNIKVETENSKAP Teknisk materialvetenskap; Compacted Graphite Iron; Thermal Conductivity; Mechanical Properties; Hardness; Microstructure; Plastic Deformation; Hollomon Equation; Elevated Temperature;

    Abstract : Thermal conductivity, hardness and strength are all highly important material properties, affecting the performance and life expectancy of components operating at elevated temperatures. The main purpose of this work has been to increase the knowledge and understanding concerning how mechanical and physical properties are affected by temperature and microstructure in compacted graphite irons. READ MORE

  5. 5. Design of Microstructures in Thermal Barrier Coatings : A Modelling Approach

    University dissertation from Göteborg : Chalmers University of Technology

    Author : Mohit Kumar Gupta; Högskolan Väst.; Chalmers tekniska högskola.; Chalmers University of Technology.; [2013]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Manufacturing and materials engineering; Produktions- och materialteknik; thermal barrier coatings; microstructure; thermal conductivity; Young‘s modulus; lifetime; finite element modelling; design;

    Abstract : Plasma sprayed Thermal Barrier Coating systems (TBCs) are commonly used for thermal protection of components in modern gas turbine application such as power generation, marine and aero engines. The material that is most commonly used in these applications is Yttria Stabilized Zirconia (YSZ) because of this ceramic’s favourable properties, such as low thermal conductivity, phase stability to high temperature, and good erosion resistance. READ MORE