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microchemical analysis

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Published: 01 December 2004
(microsegregated), with higher manganese in the pearlitic regions indicated by energy-dispersive spectroscopy microchemical analysis. 5% nital etch. (b) Coring during solidification in the as-cast microstructure of an aluminum alloy revealed by differences in etching due to compositional differences. The dark More
Image
Published: 01 January 2003
− solution at subambient temperature. Local chromium-rich deposits (location b) are located on grain boundaries or pre-existing metal ridge. Microchemical analysis of regions away from nodules (location a) suggest nonuniform CCC formation across the surface. Source: Ref 35 More
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
... Abstract This article describes some of the common elemental composition analysis methods and explains the concept of referee and economy test methods in failure analysis. It discusses different types of microchemical analyses, including backscattered electron imaging, energy-dispersive...
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
.... ceramic materials corrosion damage macroscopic examination metallic components metallographic specimens microchemical analysis microfractography microstructure polymers visual examination wear EXAMINATION of a damaged component involves a chain of activities that, first and foremost...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006671
EISBN: 978-1-62708-213-6
.... Microchemical Analysis It is often important to know the local chemical distributions in a ceramic, glass, or composite. This distribution may reveal the homogeneity of raw material powders or the distribution of phases in a fired piece. Such an analysis is most commonly performed down to micrometer levels...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006126
EISBN: 978-1-62708-175-7
... electron beam instruments equipped with secondary electron and x-ray detectors Instrument Features optimized Minimum area Comments Surface pictures Microchemical analysis Scanning electron microscope Surface pictures: above ∼ 500× on polished and etched samples; at all magnifications...
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 and Other Microchemical Analysis Procedures In the evaluation of the causes of corrosion and wear, the determination of the chemical composition of corrosion products, debris, and contaminants is often of crucial importance. In some cases, the contaminants may be large or in bulk form...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003518
EISBN: 978-1-62708-180-1
...-dispersive spectroscopy (EDS) or wavelength-dispersive spectroscopy (WDS) microchemical analysis is a powerful tool for microphase evaluation and evaluation of potential corrosion accelerants or products. Microfractography gives additional information about the microstructure. Metallography Evaluate...
Series: ASM Handbook Archive
Volume: 10
Publisher: ASM International
Published: 01 January 1986
DOI: 10.31399/asm.hb.v10.a0001774
EISBN: 978-1-62708-178-8
... and molecules. This article focuses on the principles and applications of high sputter rate dynamic SIMS for depth profiling and bulk impurity analysis. It provides information on broad-beam instruments, ion microprobes, and ion microscopes, detailing their system components with illustrations. The article...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006754
EISBN: 978-1-62708-295-2
... with macroanalysis. Fatigue striations can sometimes be measured with the scanning electron microscope. Energy-dispersive spectroscopy or wavelength-dispersive spectroscopy microchemical analysis is a powerful tool for microphase evaluation and evaluation of potential corrosion accelerants or products...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003746
EISBN: 978-1-62708-177-1
... microchemical analysis procedures that may precede metallography in complete materials characterization programs or failure analysis protocols. Metallurgical sectioning is important and critical when preparing specimens for physical or microscopic analysis. First and foremost, metallography is, by its...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006782
EISBN: 978-1-62708-295-2
... the collection process. The most common types of analysis performed on the corrosion debris are discussed later. Energy-dispersive x-ray spectroscopy (EDS) is a semiquantitative microchemical analysis technique performed using equipment attached to the scanning electron microscope. This is an elemental...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006683
EISBN: 978-1-62708-213-6
... Abstract This article focuses on the principles and applications of high-sputter-rate dynamic secondary ion mass spectroscopy (SIMS) for depth profiling and bulk impurity analysis. It begins with an overview of various factors pertinent to sputtering. This is followed by a discussion...
Series: ASM Handbook Archive
Volume: 10
Publisher: ASM International
Published: 01 January 1986
DOI: 10.31399/asm.hb.v10.a0001767
EISBN: 978-1-62708-178-8
... an electron probe microanalyzer. This function is covered briefly in this article; additional information is provided in the article “Electron Probe X-Ray Microanalysis” in this Volume. In addition to image formation and microchemical analysis, the scanning electron microscope provides several...
Series: ASM Handbook Archive
Volume: 10
Publisher: ASM International
Published: 01 January 1986
DOI: 10.31399/asm.hb.v10.a0001743
EISBN: 978-1-62708-178-8
... be used with comparative ease. Except for measurement of the sample, volumetric apparatus is unnecessary. Small quantities of titrant can be accurately generated, facilitating microchemical determinations. Manual or automated remote operation is relatively simple. In the constant-current anodic...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006651
EISBN: 978-1-62708-213-6
... Abstract This article endeavors to familiarize the reader with a selection of different ionization designs and instrument components to provide knowledge for sorting the various analytical strategies in the field of solid analysis by mass spectrometry (MS). It begins with a description...
Series: ASM Handbook Archive
Volume: 10
Publisher: ASM International
Published: 01 January 1986
DOI: 10.31399/asm.hb.v10.a0001770
EISBN: 978-1-62708-178-8
... and chemical composition on a microscopic scale. The most common methods of microchemical examination involve use of energy-dispersive or wavelength-dispersive x-ray analysis using a scanning electron microscope or an electron micoprobe. Both techniques are limited in that the analysis volume for the x-ray...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006784
EISBN: 978-1-62708-295-2
... of hydrogen damage in all the major commercial alloy systems. It covers the broader topic of hydrogen damage, which can be quite complex and technical in nature. The article focuses on failure analysis where hydrogen embrittlement of a steel component is suspected. It provides practical advice for the failure...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003552
EISBN: 978-1-62708-180-1
... is an overview of the different types of hydrogen damage in all the major commercial alloy systems. These two sections cover the broader topic of hydrogen damage, which can be quite complex and technical in nature. The third part of this article focuses on failure analysis where hydrogen embrittlement...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006653
EISBN: 978-1-62708-213-6
... of interferences in AAS, namely vaporization, ionization, matrix interferences, and background correction. Some of the methods for the analysis of microliter-sized samples and methods of standard additions to the sample solution for generating calibration standards are then reviewed. The article concludes...