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Published byLisa Webster Modified over 9 years ago
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Microstructure MENA3100,OBK, 18.01.12
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Based on chapter 1 The Consept of Microstructure
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Microstructural morphology Microanalysis Crystal structure
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How? Interaction between sample andlight X-rays electrones ImageSpectrumDiffraction pattern + SPM neutrons
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SEM Optical microscopy Electron microscopyScanning electron microscopy (SEM) Transmission electron microscopy (TEM) DiffractionX-ray diffraction (XRD) Electron diffraction Neutron diffraction X-ray spectroscopyEnergy 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)
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Structure-insensitive Young’s modulus Thermal expansion coeffisient Specific gravity Yield strength Thermal conductivity Electrical resistivity Is microstructure important? Well... Why? Structure-sensitive
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”Mikrostruktur” Makrostruktur Mesostruktur Mikrostruktur Nanostruktur s. 10
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PolycrystallineMultiphaseA crystal CalciteMarbleGranite Monocrystalline
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Equidimensional Acicular Tabular... Crystals can be:
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Measure size Caliper diameter D A = N A -1/2 D L = N L -1 ASTM Grain-size Chart
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Dislocations
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Crystallography Enhetscelle Gitter + basis
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Crystal system Axial system Bravais lattice Point group Space group
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Crystal system 7
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NOT ATOMS!
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Crystal system 7
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Stereografisk projeksjon
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