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Microstructure

Microstructure. MENA3100,OBK, 18.01.12. Based on chapter 1. The Consept of Microstructure. Microstructural morphology Microanalysis Crystal structure. How?. Interaction between sample and. light. X-rays. electrones. neutrons. + SPM. Image. Spectrum. Diffraction pattern.

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Microstructure

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  1. Microstructure MENA3100,OBK, 18.01.12

  2. Based on chapter 1 The Consept of Microstructure

  3. Microstructural morphology Microanalysis Crystal structure

  4. How? Interaction between sample and light X-rays electrones neutrons + SPM Image Spectrum Diffraction pattern

  5. Optical microscopy Electron microscopy Scanning electron microscopy (SEM) Transmission electron microscopy (TEM) Diffraction X-ray diffraction (XRD) Electron diffraction Neutron diffraction X-ray spectroscopy Energy dispersive spectroscopy (EDS) Wavelength dispersive spectroscopy Auger electron microscopy X-ray photo spectroscopy (XPS) Electron energy loss spectroscopy (EELS) Scanning probe microscopy (SPM) Atomic force microscopy (AFM) Scanning tunneling microscopy (STM) SEM

  6. Why? Is microstructure important? Well ... Structure-insensitive Structure-sensitive Young’s modulus Yield strength Thermal expansion coeffisient Thermal conductivity Specific gravity Electrical resistivity

  7. ”Mikrostruktur” s. 10 Makrostruktur Mesostruktur Mikrostruktur Nanostruktur

  8. Calcite Marble Granite A crystal Monocrystalline Polycrystalline Multiphase

  9. Crystals can be: Equidimensional Acicular Tabular ...

  10. Measure size Caliper diameter ASTM Grain-size Chart DA = NA-1/2 DL = NL-1

  11. Dislocations

  12. Crystallography Enhetscelle Gitter + basis

  13. Crystal system Axial system Bravais lattice Point group Space group

  14. 7 Crystal system

  15. NOT ATOMS!

  16. 7 Crystal system

  17. Stereografisk projeksjon

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