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denickelification

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Published: 01 January 2002
Fig. 7 Copper-nickel alloy heat-exchanger tubes that failed from denickelification due to attack by water and steam. (a) Etched section through a copper alloy C71000 tube showing dealloying (light areas) around the tube surfaces. Etched with NH 4 OH plus H 2 O. 3.7×. (b) Unetched section More
Image
Published: 01 January 2003
Fig. 16 Denickelification of cupronickel pipe exposed to a polluted marine estuary More
Image
Published: 30 August 2021
Fig. 7 Copper-nickel alloy heat-exchanger tubes that failed from denickelification due to attack by water and steam. (a) Etched section through a copper alloy C71000 tube showing dealloying (light areas) around the tube surfaces. Etched with NH 4 OH plus H 2 O. Original magnification: 3.7×. (b More
Image
Published: 01 January 2002
Fig. 44 Residual copper layer from a UNS C71500 feedwater pressure tube that underwent denickelification. The tube was subject to 205 °C (400 °F) steam on the external surface and boiling water on the internal surface 175 °C (350 °F), at pH 8.6 to 9.2). Courtesy of James J. Dillion. Permission More
Image
Published: 15 January 2021
Fig. 44 Residual copper layer from a UNS C71500 feedwater pressure tube that underwent denickelification. The tube was subject to 205 °C (400 °F) steam on the external surface and 175 °C (350 °F) boiling water on the internal surface at pH 8.6 to 9.2. Courtesy of J.J. Dillion. Permission More
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004182
EISBN: 978-1-62708-184-9
... ). Alloy 400 has high corrosion rates in aerated 30 to 75% HF and even higher rates in HF vapor with air. Furthermore, denickelification of alloy 400 has been reported in aerated HF ( Ref 5 ). Figure 6 shows that corrosion rates for alloy 400 in HF vapors can be higher than in liquid...
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
... can occur in brasses (dezincification) and in copper-nickel alloys (denickelification). The net result of selective leaching is that sound metal is gradually changed to a brittle, porous mass of copper that has little mechanical strength. Selective leaching can sometimes be detected visually...
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
..., 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 can occur in brasses (dezincification) and in copper-nickel alloys (denickelification). The net result of selective leaching...
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
... a homogeneous, single-phase alloy occurs. Dealloying affects many alloy systems, and the process is known by several very descriptive names that point to specific problems with particular alloying components, such as decarburization, decobaltification, denickelification , and dezincification . The classic...
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: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003702
EISBN: 978-1-62708-182-5
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: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0005585
EISBN: 978-1-62708-170-2
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
... ). Dezincification may occur in brass tubes and tubesheets, denickelification in copper-nickel alloy tubes, dealuminification in aluminum bronze tubesheets, and graphitic corrosion in cast iron water boxes. Dealloying is rarely the cause of condenser tube failures, but when it does occur, it is generally found...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006778
EISBN: 978-1-62708-295-2