Correlative
Mikroscopy: Combination of Optical and SEM Data
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Optical microscope: JOMESA HFD
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SEM with EDX: JOMESA PSE
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JOMESA PSE screen: shows optical and SEM image |
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Choosing area for EDX analysis |
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SEM-EDX versus
LIBS:
Optical microscopes
with LIBS option can analyze only particles found in optical
analysis.
SEM analysis
can add information about particles not seen in optical data.
SEM image can look quite different than optical image and reveal much information |
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Optical image |
SEM image |
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Somtimes critical components (glass, abrasice materials) cannot be detected with optical methods |
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Optical image (glass fiber) |
SEM image (glass fiber) |
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One
cannot compare the particle counts of optical (HFD) and SEM (PSE)
methods.
These two detection princples "see"
particles different.
Material |
Optical detection |
SEM detection |
Organic (fiber) |
good |
bad |
Graphite |
good |
bad |
Corundum |
bad |
very good |
Glass |
not at all |
very good |
Salts |
bad |
very good |