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contrast-enhancement methods

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030115
EISBN: 978-1-62708-349-2
... several contrast-enhancement methods that are not commonly used in metallurgical reflective microscopy. These methods include: Bright field Polarized light Phase contrast Differential interference contrast (DIC), also known as Nomarski Modulation contrast, also known as Hoffman...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030089
EISBN: 978-1-62708-349-2
... material phases are often used to enhance the contrast. While these methods can be effectively used for many composite materials and matrices, significant time may be required to determine a functional dye or etchant material, and it is possible that a useful dye or etchant may not be found. Before...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030177
EISBN: 978-1-62708-349-2
... and polishing at a low angle through the thickness. An ultrathin section was developed from the sample for transmitted-light analysis. Hoffman modulation contrast, 10× objective The two main methods for manufacturing prepregs that have preformed-particle-rich surfaces are single- and double-pass...
Series: ASM Technical Books
Publisher: ASM International
Published: 23 January 2020
DOI: 10.31399/asm.tb.stemsem.9781627082921
EISBN: 978-1-62708-292-1
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.mgppis.t60400215
EISBN: 978-1-62708-258-7
... solution using a stainless steel cathode at 8 V. Enhanced by differential interference contrast illumination (also called Nomarski illumination). 500× Fig. 8.46 Annealed AISI/SAE 316 austenitic stainless steel showing grain boundaries but the absence of twins. Ideal for grain size measurements...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.lmcs.t66560453
EISBN: 978-1-62708-291-4
.... Identifies the phases present in the compound layer on carbonitrided low-carbon steels. Immerse at room temperature. Identifies locations of solidification grain boundaries of austenite in ferritic weld metal. Enhances contrast between ferrite grains. Produces good distinction between lightly...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720233
EISBN: 978-1-62708-305-8
..., when microfocus, magnification methods are used, real-time radiography presents excellent resolution and contrast. (c) Includes only visible cracks. Minute surface cracks normally are undetectable by radiographic inspection methods. (d) Radiation beam must be parallel to the cracks, laps...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110461
EISBN: 978-1-62708-247-1
... contrast TEM image from a thick sample. (b) Zero-loss high-resolution phase contrast TEM image recorded using 10 eV energy window. Significant contrast enhancement noted in zero-loss image is a result of excluding background noise because of inelastically scattered electrons. Figure 33 (a) Energy...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110413
EISBN: 978-1-62708-247-1
... to use the SEM for imaging integrated circuits. A minimum of SEM theory is covered while most of the article describes practical methods for getting a good image. Specialized SEM techniques for defect localization such as voltage contrast, electron beam testing, and charge-induced voltage alternation...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030159
EISBN: 978-1-62708-349-2
... contrast. The most common types of composite materials where microcracks can be enhanced by the use of dyes are those composites having translucent or transparent fibers (such as glass, polyamide, polypropylene, and polyethylene). Figures 9.6 through 9.9 show a variety of microcracked composite cross...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1984
DOI: 10.31399/asm.tb.mpp.t67850165
EISBN: 978-1-62708-260-0
...Abstract Abstract This chapter explains how to achieve accurate, sharp delineation of the microstructure of metals using appropriate etching and contrasting techniques. It covers a variety of methods, including chemical etching, heat tinting, gas contrasting, vapor deposition, magnetic etching...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1984
DOI: 10.31399/asm.tb.mpp.t67850267
EISBN: 978-1-62708-260-0
... on the nature of the problem, the expertise of the investigator, and the available equipment. Microscopy methods for enhancing contrast include the following Dark-field illumination Polarized light Phase contrast Interference methods Filters 4-2 Basic Concepts in Light Optical Theory...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030001
EISBN: 978-1-62708-349-2
... polarized light and various contrast media to enhance the differences in refractive index of discrete phases in the composite. Although an array of different types of composite materials is in use today, the utilization of both thermosetting- and thermoplastic (polymer)-matrix fiber-reinforced...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110335
EISBN: 978-1-62708-247-1
... contrast and brightness before acquiring each image for consistent contrast. Automated software algorithms analyze these parameters and make the necessary modifications to achieve a steady state process of milling and imaging. This type of automation makes it possible to achieve stable 3nm-5nm slices...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220039
EISBN: 978-1-62708-259-4
... and Precautions Macrographic etching produces contrasts related to areas with differences in chemical composition or different metallographic structure (due to the presence of different phases, different volume fraction of the phases, or even differences in size and distribution of phases). The observed...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030193
EISBN: 978-1-62708-349-2
... the effect on the matrix microstructure, including matrix strains and fracture morphology, can be determined with the development of ultrathin sections and transmitted polarized light or one of many other contrast methods. Through the use of these techniques, a complete analysis of the damage response...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.9781627083492
EISBN: 978-1-62708-349-2
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780383
EISBN: 978-1-62708-281-5
... Atomic number contrast, channeling contrast, channeling patterns, and magnetic contrast in SEM Backscattered (inelastic) Energies less than beam energy Beam electron scattered back after inelastic collision Backscattered (plasmon and interband transition interactions) 1–1000 eV less than beam...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1984
DOI: 10.31399/asm.tb.mpp.9781627082600
EISBN: 978-1-62708-260-0
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110524
EISBN: 978-1-62708-247-1
..., laboratory (“ALT”) aged VCSELs, and VCSELs with ❬100❭ DLDs. The line scans were taken from the devices shown in the previous figure, and oriented from the darkest to the lightest points. Fig 18 Image with spectral filter outside the mirror stop band (left) shows high contrast, where images...