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dezincification

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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
... as alloy and electrolyte composition. The dashed vertical lines indicate typical ambiguity in defining a critical potential. Fig. 2 Plug-type dezincification in an α-brass (70Cu-30Zn) exposed for 79 days in 1 N NaCl at room temperature. Note porous structure within the plug. Dark line...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003137
EISBN: 978-1-62708-199-3
...) Excessive oxidation may begin above 120 °C (250 °F). If moisture is present, oxidation may begin at lower temperatures. (i) Use of high-zinc brasses should be avoided in acids because of the likelihood of rapid corrosion by dezincification. Copper, low-zinc brasses, phosphor bronzes, silicon bronzes...
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
... denickelification desiliconification dezincification galvanic corrosion graphitic corrosion intergranular corrosion pitting corrosion selective leaching uniform corrosion velocity-affected corrosion CORROSION is the electrochemical reaction of a material and its environment. This article addresses...
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
.... For example, ammonia compounds have been identified as agents that produce SCC in copper-zinc alloys. The arsenic, antimony, or phosphorus additions for inhibiting dezincification do not prevent SCC of inhibited admiralty metals (copper alloys C44300, C44400, and C44500). Cracking can be transgranular...
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
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
... 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. Dezincification may be either plug-type ( Fig. 1 ) or layer-type ( Fig. 2 ). Fig. 1 Plug-type dezincification cross...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003225
EISBN: 978-1-62708-199-3
Book Chapter

By Daryl D. Peter
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001388
EISBN: 978-1-62708-173-3
... + borax (c) 980–1205 1800–2200 BNi Cyanide-base 1120 2050 BCu Chloride-base Ferrous and nonferrous 675–1010 1250–1850 BAg (d) Chloride-base (a) Salt acts as both filler metal and heating medium. (b) Self-fluxing. (c) No dezincification takes place. (d) Separate flux...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003225
EISBN: 978-1-62708-199-3
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006280
EISBN: 978-1-62708-169-6
... Alloy name Copper, wt% Zinc, wt% Other Notes Abyssinian gold 90 10 … … Admiralty brass 69 30 1 wt% Sn Contains 1% Sn to inhibit dezincification Aich’s alloy 60.66 36.58 1.02% Sn and 1.74% Fe Designed for use in marine service, due to its corrosion resistance, hardness...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004104
EISBN: 978-1-62708-184-9
... severe corrosion of copper and brass. Any process stream containing more than 0.1 ppm of hydrogen sulfide should be prevented from contacting copper or brass. Brasses containing over 15% Zn may suffer dezincification. Dezincification is especially prevalent in stagnant, acidic solutions. Copper...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006760
EISBN: 978-1-62708-295-2
... in weld and base material. Kroll’s etch. (c) Intergranular fracture of high-strength steel bolt. Hydrogen embrittlement was suspected. Dezincification is a failure mode specific to zinc-containing copper alloys (brasses) in an aqueous solution whereby zinc is selectively removed from the material...
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
... on dezincification can be found in the article “Effects of Metallurgical Variables on Dealloying Corrosion” in this Volume. There are no definite rules concerning the effect of flow rates, temperatures, and/or pH on the corrosion of alloys in water systems, although in waters free of passivators (including...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001068
EISBN: 978-1-62708-162-7
.... Although manganese bronzes range in hardness from 125 to 250 HB, they are readily machined. Tin is added to the low-strength manganese bronzes to enhance resistance to dezincification, but it should be limited to 0.1% in high-strength manganese bronzes unless sacrifices in strength and ductility can...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003772
EISBN: 978-1-62708-177-1
... and optimal corrosion resistance. Failure analysis: Metallographic examination readily reveals stress-corrosion cracking, dezincification, dealuminification, and other common corrosion mechanisms. The technique can also uncover defects in wrought, cast, and welded structures. Both macrographic...
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
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
... from alloys, such as the dezincification of zinc from brass, it is not clear whether the nobler element is oxidized at some stage in the process and is subsequently plated out or whether the element agglomerates by a surface diffusion mechanism. In both cases, bulk diffusion is unlikely to play a major...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004185
EISBN: 978-1-62708-184-9
.... Buecker B.J. and Loper E. , Steam Surface Condenser Tubes: Watch Out for Sneaky Corrosion , Mater. Perform. , Vol 39 ( No. 5 ), 2000 , p 60 – 64 37. Namboodhiri T.K.G. and Tripathi R.S. , The Stress-Assisted Dezincification of 70/30 Brass in Ammonia , Corros. Sci...
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
... with particular alloying components, such as decarburization, decobaltification, denickelification , and dezincification . The classic example of dealloying is the dezincification of alpha brasses ( Ref 11 ). In this case, zinc is preferentially dissolved from the brass, leaving behind the copper...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004101
EISBN: 978-1-62708-184-9
... and consequently leakage Corrosion fatigue Erosion corrosion Leakage from pipes Brass Erosion and impingement attack Penetration failures of piping Dezincification Blockage of pipes and fittings Stress corrosion Lead and zinc release Lead  Lead pipe Uniform corrosion Lead release...