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selective leaching

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001439
EISBN: 978-1-62708-235-8
... indicated severe service conditions, a proprietary alloy similar to AG1, but containing 3% nickel, was recommended. Brazed joints Brazing alloys Heating equipment Intermetallic phases Cu-14Ag-5P 90Cu-10Ni Joining-related failures Dealloying/selective leaching Persistent leakage...
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 Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001817
EISBN: 978-1-62708-180-1
... Abstract This article describes the characteristics of tubing of heat exchangers with respect to general corrosion, stress-corrosion cracking, selective leaching, and oxygen-cell attack, with examples. It illustrates the examination of failed parts of heat exchangers by using sample selection...
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
... are galvanic corrosion, uniform corrosion, pitting, crevice corrosion, intergranular corrosion, selective leaching, and velocity-affected corrosion. In particular, mechanisms of corrosive attack for specific forms of corrosion, as well as evaluation and factors contributing to these forms, are described...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c0047335
EISBN: 978-1-62708-219-8
... of cast iron pipe. Chemical analyses of the porous region had a substantial increase in carbon, silicon, phosphorus, and sulfur. The porous appearance and the composition of the soft porous residue confirmed graphitic corrosion. The selective leaching of iron leaves a residue rich in carbon, silicon...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c0091617
EISBN: 978-1-62708-220-4
... was visible on the outer surface. Figure 1(a) shows several of the cracks on the inner surface of the cone. Analysis of the insulation wrapped around the liner revealed chlorides in the form of sodium chloride, at a concentration of 190 to 300 ppm, produced by selective leaching. Metallographic...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0046469
EISBN: 978-1-62708-229-7
... for this application; however, this alloy is not as resistant to impingement attack as copper alloy C68700. Air compressors Dezincification Tubes C27000 Yellow brass, 65% Cu UNS C27000 Dealloying/selective leaching After about 17 years in service, copper alloy C27000 (yellow brass, 65% Cu) innercooler...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001411
EISBN: 978-1-62708-234-1
...-40Zn 80Cu-20Zn 70Cu-30Zn Dealloying/selective leaching Dezincification is a particular form of corrosive attack which may occur in a variety of environments and to which some brasses are susceptible. It is favoured by waters having a high oxygen, carbon dioxide, or chloride content...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001165
EISBN: 978-1-62708-234-1
... in the scrubbing water was actually sulfide (including hydrogen sulfide) and was the main cause of corrosion. Graphitic corrosion Pump impellers Sulfides Gray iron Dealloying/selective leaching A Cast iron pump impeller showed strong corrosion after an operating period of only one-half year. As can...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c0091378
EISBN: 978-1-62708-219-8
... C28000 UNS C28000 Dealloying/selective leaching A 12.7 mm (0.5 in.) diam tube was removed from a potable water supply due to leaks. The tube wall thickness was 0.711 mm (0.028 in.) with a thin layer of chromium plate on the OD surface. The tube had been in service for approximately 33 years...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001536
EISBN: 978-1-62708-229-7
... cracking (IGSCC) Nuclear power plants Nuclear reactor coolant piping Nuclear Pump seal wear rings Pump shaft cracking Stress corrosion cracking 304 UNS S30400 Cemented carbide Stress-corrosion cracking Dealloying/selective leaching References 1. World Nuclear Industry...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c0091384
EISBN: 978-1-62708-219-8
... or coated and lined steel pipe, generally not susceptible to graphitic corrosion, were suggested as suitable replacement materials, and cathodic protection was also considered as a possibility. Galvanic corrosion Graphitization Piping Gray iron Dealloying/selective leaching A 25.4 cm (10...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001329
EISBN: 978-1-62708-215-0
... Leakage Nuclear reactor components Welded joints ASME SB148 C95200 UNS C95200 C95400 UNS C95400 Dealloying/selective leaching Selected Reference • Forms of Corrosion , Failure Analysis and Prevention , Vol 11 , ASM Handbook , ASM International , 2002 , p 761 – 795...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0047332
EISBN: 978-1-62708-234-1
... from the continuous erosion of the residue by action of the water within the pump. Corrosion products Erosion Residues Sand castings Gray iron Dealloying/selective leaching Deterioration of the vanes and a wearing away of the area surrounding the mainshaft-bearing housing of the pump...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001409
EISBN: 978-1-62708-229-7
... thickness. Condenser tubes Dezincification Steam turbines 80Cu-20Zn 70Cu-30Zn Dealloying/selective leaching Dezincification is a particular form of corrosive attack which may occur in a variety of environments and to which some brasses are susceptible. It is favoured by waters having a high...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001653
EISBN: 978-1-62708-219-8
... components made of different alloys in the same valve, but this is not the best approach for all applications. Dezincification Valves Water pipelines Leaded red brass Silicon brass Dealloying/selective leaching Galvanic corrosion After six years of service, three water valves on a copper...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001651
EISBN: 978-1-62708-229-7
... sulphates, ammonia, etc., and to run trials on one unit with tubes of other alloys such as 80-20 Cu-Ni or 70-30 Cu-Ni to evaluate their performance prior to any large scale retubing operations. Admiralty brass Stress-corrosion cracking Intergranular corrosion Dealloying/selective leaching...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001410
EISBN: 978-1-62708-220-4
... mode of the cracking was probably due to the torsional stresses which would be imposed on the elbow by thermally induced movements of the coil in service. Dezincification Heat distributing units Steam Stresses Torsion 60Cu-40Zn 70Cu-30Zn 80Cu-20Zn Dealloying/selective leaching...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c0091806
EISBN: 978-1-62708-219-8
... showed a loss of zinc consistent with selective leaching of this metal from the alloy, and the groundwater contained appreciable levels of chloride that may have assisted in the breakdown of the passivating film protecting the metal surface. A comparison was done of the corrosion failure of power...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001045
EISBN: 978-1-62708-214-3
... a dezincification-resistant alloy was recommended. Cooling systems Dezincification Hydroelectric power generation Lubrication systems Yellow brass, 65% Cu UNS C27000 Dealloying/selective leaching References 1. Fontana M.G. and Greene N.D. , Corrosion Engineering...