MicrostructureMENA3100,OBK, 18.01.12

Based on chapter 1The Consept of Microstructure

Microstructural morphology

Microanalysis

Crystal structure

How?Interaction between sample andlightX-rayselectronesImageSpectrumDiffraction pattern+ SPMneutrons

SEMOptical microscopy

Electron microscopyScanning electron microscopy (SEM)Transmission electron microscopy (TEM)

DiffractionX-ray diffraction (XRD)Electron diffractionNeutron 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)

Structure-insensitiveYoungs modulusThermal expansion coeffisientSpecific gravityYield strengthThermal conductivityElectrical resistivityIs microstructure important?Well ...Why?Structure-sensitive

MikrostrukturMakrostrukturMesostrukturMikrostrukturNanostrukturs. 10

PolycrystallineMultiphaseA crystalCalciteMarbleGraniteMonocrystalline

EquidimensionalAcicularTabular...Crystals can be:

Measure sizeCaliper diameterDA = NA-1/2DL = NL-1ASTM Grain-size Chart

Dislocations

CrystallographyEnhetscelleGitter + basis

Crystal systemAxial systemBravais latticePoint groupSpace group

Crystal system7

NOT ATOMS!

Crystal system7

Stereografisk projeksjon