Sökning: "FIB"

Visar resultat 6 - 10 av 80 avhandlingar innehållade ordet FIB.

1. 6. Mechanisms of Plastic Deformation of Cemented Carbide and Cermet Cutting Tools

   Författare :Gustaf Östberg; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SEM; cermets; TEM; plastic deformation; ab initio calculations; EFTEM; APFIM; FIB; cemented carbides; EBSD;

   Sammanfattning : In this thesis, the physical mechanisms acting during plastic deformation of hardmetals used in metal cutting applications have been investigated. Microstructural and microanalytical studies have been performed on cemented carbides as well as cermet materials. LÄS MER

3. 7. Fundamental studies on the high temperature corrosion mechanisms of a 22Cr austenitic stainless steel in environments related to oxy-fuel combustion

   Författare :Luciana Intiso; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; EDX; TEM; KCl; Na2SO4; SEM; FIB; high temperature oxidation; sulphur dioxide; carbon dioxide; GI-XRD; stainless steels; water vapour; GDOES; t-EBSD;

   Sammanfattning : This thesis concern the high temperature corrosion mechanisms of stainless steels, with focus on a 22 wt.% Cr FeNiCr alloy (Sanicro 25), in environments related to oxy-fuel combustion, which is a promising technology that can provide enhanced CO2 recovery and sequestration from power plants by using post-combustion capture. LÄS MER

4. 8. The Influence of Water Vapour on the Oxidation Behaviour of High-temperature Materials Microstructure investigation using analytical electron microscopy

   Författare :Jun Eu Tang; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEM; EDS; SEM; oxidation; microstructure; water vapour; stainless steel; vaporisation; FIB;

   Sammanfattning : This thesis covers the analytical electron microscopy work carried out on samples exposed to high-temperature oxidation in O2 atmospheres with the intention of investigating the effect of oxygen and water vapour. SEM/EDS, TEM/EDS and diffraction techniques, complemented by FIB precision milling, were employed to characterise the formed oxide scales as well as the material directly under the scale in order to understand the mechanisms that influence the corrosion process. LÄS MER

5. 9. Laser induced microstructural modifications in supported gold nanoparticle distributions

   Författare :Lisa Eurenius; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; SEM; diffusion; patterning; localized surface plasmons; FIB; TEM; laser manipulation; optical waveguides; gold nanoparticles;

   Sammanfattning : .... LÄS MER

7. 10. Integration and Fabrication Techniques for 3D Micro- and Nanodevices

   Författare :Andreas C. Fischer; Frank Niklaus; Karl F. Böhringer; KTH; []
   Nyckelord :Microelectromechanical systems; MEMS; Nanoelectromechanical systems; NEMS; silicon; wafer-level; chip-level; through silicon via; TSV; packaging; 3D packaging; vacuum packaging; liquid encapsulation; integration; heterogeneous integration; wafer bonding; microactuators; shape memory alloy; SMA; wire bonding; magnetic assembly; self-assembly; 3D; 3D printing; focused ion beam; FIB;

   Sammanfattning : The development of micro and nano-electromechanical systems (MEMS and NEMS) with entirely new or improved functionalities is typically based on novel or improved designs, materials and fabrication methods. However, today’s micro- and nano-fabrication is restrained by manufacturing paradigms that have been established by the integrated circuit (IC) industry over the past few decades. LÄS MER