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Dealloying/selective leaching

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Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003620
EISBN: 978-1-62708-182-5
... Abstract Dealloying is a corrosion process in which one or more elements are selectively dissolved, leaving behind a porous residue of the remaining elements. This article describes the dealloying in various systems, namely, dezincification, graphitic corrosion, dealuminification, and noble...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003609
EISBN: 978-1-62708-182-5
... between molten metal and aqueous corrosion. General, or uniform, metal oxidation and dissolution is a common form of molten salt corrosion but is not the only form of corrosion seen. Selective leaching is very common at higher temperatures, as are pitting and crevice corrosion at lower temperatures...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003548
EISBN: 978-1-62708-180-1
... corrosion, pitting and crevice corrosion, intergranular corrosion, and velocity-affected corrosion. The article contains a table that lists combinations of alloys and environments subjected to selective leaching and the elements removed by leaching. corrosion crevice corrosion dealuminification...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006783
EISBN: 978-1-62708-295-2
.... corrosion prevention crevice corrosion dealloying corrosion galvanic corrosion intergranular corrosion microbiologically influenced corrosion pitting selective leaching uniform corrosion velocity-affected corrosion CORROSION is the electrochemical reaction of a material and its environment...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003137
EISBN: 978-1-62708-199-3
... Intergranular corrosion Corrosion along grain boundaries without visible signs of cracking Select proper alloy for environmental conditions based on metallographic examination of corrosion specimens Dealloying Preferential dissolution of zinc or nickel, resulting in a layer of sponge copper Select proper...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003831
EISBN: 978-1-62708-183-2
... alloy and the base metal, there is a potential for pitting corrosion. Selective Dealloying Many brazed joints consist of two or more phases. Sometimes, one or more of the phases are subjected to selective attack. Occasionally, an element is selectively leached from the braze. An example...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001817
EISBN: 978-1-62708-180-1
... to be deposited on the tube walls during low flow of the river water. Selective Leaching Selective leaching, or dealloying, is localized corrosion of copper alloys that leaves a spongy, structurally weak mass of the more noble alloying element in place at the site of corrosion attack. Selective leaching...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004152
EISBN: 978-1-62708-184-9
... can produce sulfides under debris and deposits where the oxygen content is low. Thus, the risk of sulfide attack is greatly reduced if the copper alloy tubes are regularly cleaned ( Ref 44 ). Dealloying (Water Side) Dealloying is the selective corrosion of one or more components of a solid...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003616
EISBN: 978-1-62708-182-5
... corrosion. Often unnoticed until after a metal component fails, dealloying , or selective leaching , is an alloying-related form of corrosion. In cases of dealloying, a process that is somewhat similar to galvanic corrosion but at the subgrain level, selective dissolution of one element from...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003718
EISBN: 978-1-62708-182-5
... of stress cycles and a speci ed period of present. In either case, failure occurs by inter- such as Stellite, or from cemented carbides. time. granular cracking of the embrittled material. See also dealloying and selective leaching. corrosion inhibitor. See inhibitor. creep-rupture strength. The stress...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006813
EISBN: 978-1-62708-329-4
... would have been to install replacement tubes in the vertical position and to continue to use river water. With the tubes in the vertical position, solids would be less likely to be deposited on the tube walls during low flow of the river water. Selective Leaching Selective leaching, or dealloying...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.9781627081825
EISBN: 978-1-62708-182-5
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003702
EISBN: 978-1-62708-182-5
... Abstract This article outlines the processes by which materials are selected to prevent or control localized corrosion, galvanic corrosion, and intergranular corrosion. It reviews the operating conditions and the design of candidate materials for material selection. The article discusses...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003816
EISBN: 978-1-62708-183-2
... is the brasses, which are copper-zinc alloys. The resistance of brasses to corrosion by aqueous solutions does not change markedly as long as the zinc content does not exceed 15%; above 15% Zn, dezincification (dealloying) may occur. Selective removal of zinc leaves a relatively porous and weak layer of copper...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0005585
EISBN: 978-1-62708-170-2
... cleaning in which the work is the anode. Also called reverse-current cleaning. anodic coating. A protective, decorative, or functional coating, formed by conversion of the surface of a metal in an electrolytic oxidation process. anodic etching. Method of revealing microstructure by selective dissolution...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.9781627081702
EISBN: 978-1-62708-170-2
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
... of importance include crack progression and crack profile, pit morphology, selective leaching, dealloying, decarburization, inclusions, grain structures, and other characteristics. These features provide key evidence regarding the cause of failure and extent of damage. The microstructure also provides...
Book Chapter

By R.G. Kelly
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003613
EISBN: 978-1-62708-182-5
... corrosion such as pitting, intergranular attack, environmentally assisted cracking, and dealloying. In all of those cases, the electrochemical and chemical conditions within an occluded region become altered with respect to the conditions on fully exposed surfaces. These variations can lead to rates...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006753
EISBN: 978-1-62708-295-2
.... This process encompasses the original concept development, the general configuration definition, and the detail design, including selection and specification of materials and manufacturing processes. Design involves identifying and defining a need for the product or system, followed by definition...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004175
EISBN: 978-1-62708-184-9
... Selective leaching (dealloying) Environmentally induced cracking Fretting corrosion Hydrogen embrittlement Atmospheric corrosion Depending on the severity, corrosion in electronic assemblies results in the following failure pathways: Oxidative materials degradation resulting in loss...