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color etching

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2016
DOI: 10.31399/asm.tb.ascaam.t59190147
EISBN: 978-1-62708-296-9
... etching with reagent Dix-Keith(1) Table 4.5 Identification of chosen intermetallic phases via selective etching with reagent Dix-Keith(1) Phase Description Ref 13 Ref 12 Ref 11 Fig. 4.4 Al 2 Cu, θ Cu Does not etch Outline, colors on yellow blue Does not etch Outline...
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
... be observed, permitting etching to be halted at the proper time. With a little experience, one can gauge the proper degree of etching by the surface dulling or coloration produced. If etching does not occur upon immersion, the sample should be removed and held under hot water for a few seconds; the sample...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220519
EISBN: 978-1-62708-259-4
... by the etchant. The areas of retained austenite are light colored. By properly adjusting the etching conditions, it is possible to identify bainite and martensite by their different colorations after etching. Etchant: sodium metabisulfite 10% in water. Courtesy of A.J. Abdalla and R.M. Anazawa, IEAv/CTA, S.J...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1984
DOI: 10.31399/asm.tb.mpp.9781627082600
EISBN: 978-1-62708-260-0
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720161
EISBN: 978-1-62708-305-8
... be shallower, while for low magnification examination a deeper etch yields better image contrast. Some etchants produce selective results in that only one phase will be attacked or colored. A vast number of etchants have been developed; the more commonly used etchants are given in Tables 1 to 6 . Typical...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.mgppis.t60400215
EISBN: 978-1-62708-258-7
...—to Darken Carbides Etching Response—to Reveal Ferrite Grain Boundaries Etching Response—to Reveal Carbides and Ferrite Grain Boundaries Etching Response—to Color or Tint the Ferrite Grains and Leave the Carbides Unaffected Etching Response—to Darken the Ferrite Grains and Leave the Carbides...
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
... solution to 75 to 85 °C. Etch by immersion for approx 20 min. Immerse for 30 s. Remove, wash, and swab off black deposit. Repeat about 3 times Repolish The reagent deposits a complex oxide-sulfide-sulfate film on the surface, a film which is colored in shades of brown...
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
... illumination techniques is imperative with materials exhibiting low contrast or with optically anisotropic materials, especially those that are difficult to etch. Light microscopy has numerous applications. The most important application is the determination of the structural phases present...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220069
EISBN: 978-1-62708-259-4
... is revealed through coloring cementite. Also colors several carbides. Does not color carbides containing more than 10%Cr ( Ref 7 ). Etches sulfides and will show the grain boundaries of slow cooled steels. Solution is prepares by dissolving picric acid in boiling water and progressively adding the sodium...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230199
EISBN: 978-1-62708-298-3
... the dendritic compound a series of colors from yellow to green. Udy et al. [1949] Zinc … Zinc distills out and does not remain to form second phase in beryllium. Kaufmann et al. [1950] Zirconium 5 Dendritic phase scarcely distinguishable from the matrix until etched. 10 vol% alcoholic HF stains...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1984
DOI: 10.31399/asm.tb.mpp.t67850001
EISBN: 978-1-62708-260-0
... Figure 1-1 Cold etch of disc cut from small ingot (10% aqueous HNO 3 ). Figure 1-2 Macrostructure of centrifugally cast 99.8% aluminum after a minor amount of reduction (3¼ ×; etchant, solution of 5 mL HNO 3 , 5 mL HCl, 5 mL HF, and 95 mL H 2 O). (Courtesy of R. D. Buchheit...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.smnm.t52140001
EISBN: 978-1-62708-264-8
... of 2 to 5% nitric acid (HNO 3 ) with methyl alcohol, a mixture often called nital—“nit” for the acid and “al” for the alcohol. This process is known as etching, which causes the shiny surface to become a dull color. If the sample is now viewed in an optical microscope at a magnification of 100...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2016
DOI: 10.31399/asm.tb.ascaam.t59190089
EISBN: 978-1-62708-296-9
... instructions for color etching by immersion , p. III , DVS-GmbH , Dusseldorf , 1986 5. Lienard M. , Pacuqe C. : New metallographic etching method for aluminum alloys used in foundries, Struers- The best of structure , Copenhagen 1-12 1988 , p. 101 - 104 6. Warmuzek M...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2007
DOI: 10.31399/asm.tb.pmsspmp.t52000203
EISBN: 978-1-62708-312-6
... sintered 434L showing a mixed microstructure of coarse and fine grains. Glyceregia etch Fig. 20 Photomicrograph of 1316 °C (2400 °F), hydrogen sintered 409LNi showing martensitic (light colored) and ferritic grains (dark colored). Columbium compounds are seen as fine precipitates within...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.mgppis.t60400109
EISBN: 978-1-62708-258-7
... Fig. 5.17 (Part 1) Micrographs taken of the same field of a white cast iron by rotating a five-objective nosepiece through (a) 5×, (b) 10×, (c) 20×, (d) 50×, and (e) 100×. The white constituent is cementite, and the dark constituent is pearlite. 4% picral etch. Final magnification (a) 50×, (b) 100...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.mgppis.9781627082587
EISBN: 978-1-62708-258-7
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720021
EISBN: 978-1-62708-305-8
... an identifying strand. It may be colored plastic, or the diameter of a single wire, or part of the construction configuration. Bolt heads are another good example of markings which give information. In addition to the radial markings on the heads which tell the strength level, the manufacturer’s markings...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030089
EISBN: 978-1-62708-349-2
... Etches for Polymeric Matrices Summary References References 1. Abromowitz M. , Contrast Methods in Microscopy: Transmitted Light , Basics and Beyond , Olympus Corp. , Lake Success, NY , 1987 2. Bloss F.D. , An Introduction to the Methods of Optical Crystallography...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110391
EISBN: 978-1-62708-247-1
... section. This can be done by etching the interface between the layers, preferential etching of layers, plating metals on specific materials, or causing colors to develop on specific layers. Quite a few metal etchants and delineants were modified from those used in the metallurgical industry. Platings...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220129
EISBN: 978-1-62708-259-4
... 10.1016/j.jvolgeores.2009.04.017 19. Mizoguchi S. , A Study on Segregation and Oxide Inclusions for the Control of Steel Properties , Ph.D. thesis, University of Tokyo, 1996 , p 97 20. Casey J. , Macro-Etching of Continuous Cast Steel , Microsc. Microanal. , Vol 8 , Suppl...