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dealloying corrosion

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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 Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003137
EISBN: 978-1-62708-199-3
... attack copper metals as well as the most effective means of combating each. General corrosion, galvanic corrosion, pitting, impingement, fretting, intergranular corrosion, dealloying, corrosion fatigue, and stress-corrosion cracking (SCC) are some forms of corrosion. The article also lists a galvanic...
Image
Published: 01 January 2005
Fig. 50 A micrograph of graphitic corrosion in the wall of the cast iron pipe in Fig. 49 . Original magnification: 50× Corrosion form and mechanism Metallurgically induced corrosion, dealloying graphitic corrosion Material Gray cast iron Product form Underground mains water More
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.a0003615
EISBN: 978-1-62708-182-5
... on the corrosion of aluminum alloys are varied and complex. When an alloy composed of a solid solution of various elements corrodes, it is typical that one or more elements dissolve preferentially, leaving other elements enriched on the surface. This dealloying process depends strongly on nonmetallurgical...
Image
Published: 01 January 2005
cast irons (ductile or nodular irons) are not prone to gross selective corrosion. Corrosion form and mechanism Metallurgically induced corrosion, dealloying graphitic corrosion, Material Gray cast iron Product form Underground mains water pipe More
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
...- corrosion Sulfide attack Dealloying Pitting/crevice corrosion Galvanic corrosion Environmental cracking (b) NH 3 attack Carbon steel Steel condenser shell, tubesheets, spargers S N N W W N N Copper alloys Muntz metal tubesheets N w w N W N N Aluminum bronze...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003650
EISBN: 978-1-62708-182-5
...), although corrosion rates are less than 0.05 mm/yr (<2 mils/yr) and more than 0.5 mm/yr (>20 mils/yr) for tap water and seawater, respectively. Detailed information on dezincification can be found in the article “Effects of Metallurgical Variables on Dealloying Corrosion” in this Volume...
Image
Published: 01 January 2003
Fig. 3 Effect of molten salt corrosion on nickel-base and stainless steel alloys. In all four examples, chromium depletion (dealloying) was the result of prolonged exposure. Accompanying chromium depletion was the formation of subsurface voids, which did not connect with the surface More
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: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003633
EISBN: 978-1-62708-182-5
... is observed in alloy-environment combinations that result in the formation of a film on the metal surface. These films may be passivating layers, tarnish films, or dealloyed layers. In many cases, these films reduce the rate of general or uniform corrosion, making the alloy desirable for resistance to uniform...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004102
EISBN: 978-1-62708-184-9
..., tuberculation, and under-deposit corrosion (UDC), microbiologically influenced corrosion (MIC), galvanic corrosion, stress corrosion cracking (SCC), and dealloying. General corrosion rates vary greatly because some waters are much more aggressive than others. Localized forms of corrosion, pitting, concentration...
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 cracking, dealloying, or pitting) may also be operative. Following are some examples of uniform-corrosion-related failures and its prevention and evaluation. Appropriate methods of controlling uniform corrosion in some situations are noted. Selection of a metal that has a suitable resistance...
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 Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004132
EISBN: 978-1-62708-184-9
... streams, corrosion continues to be one of the central challenges to the full development of the SCWO technology. The article presents a summary of selected materials exposed to various environments as well as the observed form of corrosion in a table. It also illustrates the necessity to adopt...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003969
EISBN: 978-1-62708-183-2
...-Temperature Gaseous Corrosion (section on Carburization) 231 Localized corrosion Pitting Pitting Corrosion 236 Crevice, underdeposit attack Crevice Corrosion 242 Filiform Filiform Corrosion 248 Metallurgically influenced corrosion Dealloying Effects of Metallurgical...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003837
EISBN: 978-1-62708-183-2
... Abstract This article reviews the corrosion behavior of intermetallics for the modeling of the corrosion processes and for devising a strategy to create corrosion protective systems through alloy and coating design. Thermodynamic principles in the context of high-temperature corrosion...
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
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003641
EISBN: 978-1-62708-182-5
... of examination Erosion Cavitation Fretting Intergranular Group 3: verification is usually required by microscopy Exfoliation Dealloying Stress-corrosion cracking Corrosion fatigue Many tests have been designed specifically to reveal the susceptibility of materials to one or more of these corrosion...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004120
EISBN: 978-1-62708-184-9
... for Corrosion Protection Aboard Naval Ships (Metric) Navy DOD-STD-2187 Aug 20, 1987 Chemical Cleaning of Salt Water Piping Systems (Metric) Navy MIL-STD-2195A Dec 17, 1993 Detection and Measurement of Dealloying Corrosion on Aluminum Bronze and Nickel-Aluminum Bronze Components, Inspection Procedure...