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acid plating baths

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c9001173
EISBN: 978-1-62708-218-1
... in a cyanide bath for 12 hours at 930 deg C. After tempering for 2 h at 170 to 175 deg C, the copper plate was removed by immersing in an acid bath for 45 min. The investigations found the microstructure, hardness, and chemistry all met the specification. The case depth was approximately 0.75 mm to 1.0 mm...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001373
EISBN: 978-1-62708-215-0
... caused by intergranular attack and slight dezincification of the inner bore surface of the fitting. Dezincification and intergranular attack were attributed to excessive exposure to nonoxidizing acids in the pickling bath. Dezincification Inert gas service CDA 377 UNS C37700 Intergranular...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001641
EISBN: 978-1-62708-235-8
... baths for cleaning and surface preparation, as well as for the actual plating deposition. Porosity that is linked to the surface can trap liquids from the cleaning and surface preparation baths, and these liquids are usually quite acidic. The trapped acid may initiate corrosion and generate hydrogen gas...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.homegoods.c0048674
EISBN: 978-1-62708-222-8
... of hydrogen embrittlement, because acid cleaning was not needed after austempering and before plating. Also, mechanical deposition of zinc coating does not produce hydrogen embrittlement in hardened steel. ...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003552
EISBN: 978-1-62708-180-1
... Deposits on the Fracture Surface Specify a Proper and Appropriate Hardness Range Specify Proper Heat Treating and Tempering Ensure Good Cleaning Solution Maintenance Ensure Good Plating Solution Maintenance and/or Proper Selection of Plating Bath Composition Ensure Proper Postplating Baking...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006784
EISBN: 978-1-62708-295-2
... Maintenance and/or Proper Selection of Plating Bath Composition Ensure Proper Postplating Baking Procedure Follow Good Manufacturing Practices Perform Destructive Testing on Samples Sustained Tensile Stresses Visual Examination for Fracture-Surface Orientation Visual Examination or Optical...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006805
EISBN: 978-1-62708-329-4
...). Mechanical plating is often used in place of electroplating to minimize the risk of hydrogen pickup due to the lack of an electrolyte (acid cleaning, plating bath). Cadmium coatings are also applied to fasteners by an electroplating process similar to that used for zinc. These coatings meet ASTM...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001812
EISBN: 978-1-62708-180-1
...) Depending on fastener design; check with manufacturer. (g) Nickel-plated Asp only. (h) Metallic structure on backside. Source: Ref 1 Specifications Specifications are used to outline fastener requirements, to control the manufacturing process, and to establish functional or performance...
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
... wear. Take care to avoid additional damage or alteration to the subject component during cleaning and sectioning. If lab-induced damage is noted, document it immediately, to minimize confusion later in the investigation. Fig. 3 (a) Residual-stress opening crack in silver-plated brass teapot...
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
... of the root-pass fusion zone. Etched with 10% oxalic acid. 55× Fig. 1 Pitted inside-diameter surface of AISI type 410 stainless steel tube. (a) Typical example of pitting. Approximately 2 1 2 ×. (b) Enlargement of pit shown in (a). Approximately 50× Fig. 2 Cross section of a pit...
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
... grain boundaries of the root-pass fusion zone. Etched with 10% oxalic acid. Original magnification: 55× 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...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001769
EISBN: 978-1-62708-241-9
... polished to mirror finish and immersed in 10% nitric acid at 60 °C for 5 min in a water bath followed by gentle cleaning with trichloroethylene. These coupons were autoclaved at 121 °C at 15 psi for 15 min. The autoclaved coupons were immersed in calcium precipitating bacterial culture system described...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003532
EISBN: 978-1-62708-180-1
... aluminum etched with aqueous 0.5% hydrofluoric acid Fig. 11 Light micrographs of specimens of 1215 carbon steel that were salt bath nitrided and mounted in different resins. (a) Epomet thermosetting epoxy resin. (b) Phenolic thermosetting resin. (c) Methyl methacrylate thermoplastic resin. (d...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006765
EISBN: 978-1-62708-295-2
... to detect if the surface had been plated with nickel. Fig. 3 Light micrographs of specimens of 1215 carbon steel that were salt bath nitrided and mounted in different resins. (a) Thermosetting epoxy resin. (b) Phenolic thermosetting resin. (c) Methyl methacrylate thermoplastic resin. (d) Electroless...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001731
EISBN: 978-1-62708-217-4
... to be the vital element in all three types of failure. In hydrogen embrittlement or delayed fracture the hydrogen usually enters the steel during processing or fabrication. It may be absorbed from heat treatment atmospheres, acid cleaning solutions, plating baths or other active hydrogen-generating agents...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003549
EISBN: 978-1-62708-180-1
... for these applications in the water/wastewater, power generation, and other industries. Figure 6 provides a view of a severely deteriorated sludge storage tank during repairs. Conditions that cause serious corrosion problems include airborne contamination, dust, pollution, acid rain, and proximity to a seacoast...
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
... taken was not reported. Examples of Factors Contributing to Galvanic Corrosion Ion Transfer Ion transfer results in the deposition of active and noncompatible deposits on a metal surface. For example, an aluminum stirrer plate used in water was extensively pitted because the water bath...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003522
EISBN: 978-1-62708-180-1
..., nonscratching brush Washing with organic solvents Use of an ultrasonic cleaning bath and appropriate solvents. The use of an ultrasonic cleaning bath is very useful in speeding up the cleaning process. Use of a mild acid or alkali, depending on the metal. A solution that attacks the deposits...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006757
EISBN: 978-1-62708-295-2
... picric acid containing sodium tridecylbenzene sulfonate (1 g per 100 mL solution) Fig. 33 Volume fraction of retained austenite in carbon steels fully austenitized and water quenched in water or brine at room temperature. Source: Ref 14 Fig. 34 Microstructure of Mar-M-247 heat...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001339
EISBN: 978-1-62708-215-0
... aluminum plate-fin heat exchangers are commonly used in hydrocarbon and natural gas processing plants because of their excellent cryogenic and heat-transfer properties, and because of the economics of construction. Process temperatures in ethylene manufacturing plants are as cold as −170 °C (−270 °F), thus...