Characterization of Oxide Scales Identification of Oxide Scales - - PowerPoint PPT Presentation

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Jan 09, 2024 347 likes •523 views

Characterization of Oxide Scales Identification of Oxide Scales Visual Observation Optical Microscopy SEM/EDAX EPMA X-Ray Diffraction AES/ESCA SIMS Principle of Optical Microscopy NA numerical aperture o.59 for

SLIDE 1

Characterization of Oxide Scales

SLIDE 2

Identification of Oxide Scales

Visual Observation
Optical Microscopy
SEM/EDAX
EPMA
X-Ray Diffraction
AES/ESCA
SIMS

SLIDE 3

NA – numerical aperture – o.59 for air and 1.5 for Oil Maximum Resolution 2000 A for ordinary lamp and 5000A for halogen Lamp Poor Resolution and depth of Focus Principle of Optical Microscopy

SLIDE 4

Resolution vs Numerical aperture

SLIDE 5

Scanning Electron Microscopy

Wavelength of ordinary Light – 5000A and that Electron 20 A

SLIDE 6

Schematic of Scanning Electron Microscope

SLIDE 7

Scanning Electron Micrograph Showing Surface Morphology of an Oxide

SLIDE 8

TEM

SLIDE 9

TEM Micrographs of the Oxide/ Whiskers

SLIDE 10

Energy Dispersive X-Ray Analysis

SLIDE 11

Wavelength Dispersive X-rays

SLIDE 12

SLIDE 13

Area Mapping of Various Elements in Oxide Scale

SLIDE 14

X-ray Diffraction

SLIDE 15

Principle of AES and XPS

SLIDE 16

Release of Auger Electron from Various atoms

SLIDE 17