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electron-dispersive x-ray analysis

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Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001761
EISBN: 978-1-62708-241-9
... by scanning electron microscope (SEM) equipped with electron-dispersive X-ray analysis (EDAX). Microhardness gradient through the nitrided layer close to fracture, surface hardness, and macrohardness at the journals were all measured. Fractographic analysis indicated that fatigue was the dominant mechanism...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001326
EISBN: 978-1-62708-215-0
... along the axes. SEM examination revealed the presence of longitudinally oriented nonmetallic inclusions that were partly retained and partly dislodged. Electron-dispersive x-ray analysis indicated that the inclusions were composed of CaO. Based on the overall chemistry of the inclusion sites, the source...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006770
EISBN: 978-1-62708-295-2
... are then covered. The article ends with a discussion on the applications of x-ray spectroscopy in failure analysis. energy-dispersive spectrometers failure analysis handheld X-ray fluorescence analysis instrumentation scanning electron microscope wavelength-dispersive spectrometers X-ray spectroscopy...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003522
EISBN: 978-1-62708-180-1
... spectroscopy (EDS), electron probe microanalysis (EPMA), Auger electron spectroscopy (AES), secondary ion mass spectroscopy (SIMS), and x-ray powder diffraction (XRPD). Energy-Dispersive X-Ray Analysis Energy-dispersive x-ray analysis is normally conducted using a SEM fitted with an x-ray detector...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001906
EISBN: 978-1-62708-217-4
... testing. Two of the three failed lugs were sent to ARL from NAWCWD for failure analysis. The failure investigation included visual examination, chemical analysis, metallography, hardness testing, scanning electron microscopy, and energy dispersive X-ray spectroscopy. Visual examination revealed...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001359
EISBN: 978-1-62708-215-0
... with a spherical bead of metal sticking to the blade surface in each case. Scanning electron microscope revealed that the cracks initiated at the point of contact of the bead with the blade surface. Energy-dispersive X-ray analysis indicated that the bead composition was the same as that of the blade. Detailed...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001829
EISBN: 978-1-62708-241-9
... … … … … … … 7.0 For microstructural observation of the first-stage vanes, the authors used a scanning electron microscope (SEM) at 20 kV. They then used a SEM-energy dispersive spectroscopy (EDS) method to determine the chemical compositions of specimens. To identify phases, they conducted x-ray...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001839
EISBN: 978-1-62708-241-9
...Abstract Abstract Several stainless steel coils cracked during a routine unwinding procedure, prompting an investigation to determine the cause. The analysis included optical and scanning electron microscopy, energy-dispersive x-ray spectrometry, and tensile testing. An examination...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001109
EISBN: 978-1-62708-214-3
... precipitates composed of oxides (dark) or chromium rich sulfides (light gray), in addition to the expected carbides. Electron-dispersive X-ray analysis (EDXA) of the external oxide scale showed considerable variation in the proportions of iron and chromium. The example in Fig. 4 showed that the outer portion...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c9001535
EISBN: 978-1-62708-232-7
... Limited. Microstructural issues influencing roll quality, such as characteristics of carbides, tempered martensite, retained austenite, etc., have been extensively studied through optical and scanning electron microscopy, electron-probe microanalysis, image analysis, and x-ray diffractometry...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006759
EISBN: 978-1-62708-295-2
... surface chemical analysis techniques such as x-ray photoelectron spectroscopy (XPS), or electron spectroscopy for chemical analysis, and Auger electron spectroscopy. Depth profiling through layers in the nanometer to micron range allows for chemical analysis into a material. These techniques are used...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003529
EISBN: 978-1-62708-180-1
...-dispersive x-ray spectrometer Fig. 6 Schematic of a complete energy-dispersive x-ray spectrometer used in electron-probe x-ray microanalysis. Various pulse processing functions and the multichannel analyzer are shown. FET, field effect transistor Fig. 7 (a) SEM image and (b) EDS spectrum...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006757
EISBN: 978-1-62708-295-2
... electron microscopy (TEM) Polymer morphology X-ray photoelectron spectroscopy (XPS) Elemental concentrations, oxidation states Auger electron spectroscopy (AES) Elemental concentrations Wavelength dispersive x-ray analysis Elements present on polymer surfaces Source: Ref 7...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003534
EISBN: 978-1-62708-180-1
... conducting and semiconducting solids. However, AES analysis of some inorganic insulating materials is also possible. A competing process to Auger electron generation is that of x-ray emission, the analytical signal for the technique known as energy dispersive x-ray spectroscopy (EDS). In general, x-ray...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.homegoods.c9001622
EISBN: 978-1-62708-222-8
..., or unspecified) failure A stamped coin exhibited visible discolored areas, seen as a tan haze on the surface ( Fig. 1 ). In this case, the discoloration was considered merely cosmetic. The nonstained and stained regions were studied using a scanning electron microscope equipped with an energy-dispersive X...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.med.c0048400
EISBN: 978-1-62708-226-6
... a tension band fixation containing a cerclage wire, two screws, and washers beneath the screw heads. See also Fig. 2 . Fig. 2 Intercrystalline corrosion of a type 304 stainless steel cerclage wire. (a) Broken cerclage wire. (b) Energy-dispersive x-ray analysis under the scanning electron...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.9781627081801
EISBN: 978-1-62708-180-1
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0006417
EISBN: 978-1-62708-234-1
... stainless steel was also recommended. Cadmium plating Corrosion prevention Corrosion products Energy dispersive x ray analysis Inhibitors Iron oxides Materials substitution Pipe bends Scanning electron microscopy 4340 UNS G43400 (Other, general, or unspecified) corrosion A cadmium...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001649
EISBN: 978-1-62708-234-1
... be the worst-case scenario with the reuse of aerospace fasteners and addresses the reasoning behind some of the aerospace industry's “best practices” regarding fastener use. Background Information Visual and Light Microscopic Examination Scanning Electron Microscopy and Energy Dispersive X-Ray...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001324
EISBN: 978-1-62708-215-0
... and secondary cracks were examined using a scanning electron microscope (SEM) to document fracture features. The fracture surface deposits were analyzed by energy dispersive x-ray spectoscopy (EDS). Figure 3 shows typical SEM photographs of the crack surfaces. The primary, secondary, and lab fracture surfaces...