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thermal spray zinc

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001702
EISBN: 978-1-62708-219-8
... opportunity is to apply remediation techniques currently in use commercially, but still, in some respects, in the development stage. Cathodic protection is the process that is used most often to extend the life of older existing bridges. Thermal-spray metal anodes, particularly thermal-spray zinc...
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
... in the environment; change in the alloy or heat treatment; change in design; use of galvanic protection; use of inhibitors; use of nonmetallic coatings and liners; application of metallic coatings; use of surface treatments, thermal spray, or other surface modifications; corrosion monitoring; and preventive...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001199
EISBN: 978-1-62708-235-8
... Abstract Lakes in zinc die castings are areas encompassed by irregular lines or waves on flat or slightly contoured surfaces which are intended to look uniform. The laked areas have to be removed by polishing before the castings can be plated. This adds considerably to the overall cost...
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
..., and the application of preventive measures. The fundamentals of corrosion are described in more detail in Ref 2 . However, as a brief introduction, the electrochemical nature of corrosion can be illustrated by the attack on zinc by hydrochloric acid (HCl). When zinc is placed in dilute hydrochloric acid, a vigorous...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c9001543
EISBN: 978-1-62708-218-1
... problems. The temperature in much of the piston was high enough to cause softening by overaging, lowering strength. Automotive engines Overheating Pistons Softening 357 UNS A03570 Thermal fatigue fracture Mixed-mode fracture High-temperature corrosion and oxidation The sustained high...
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
... the holes with no clearance in order to avoid fretting, but an interference fit may cause delamination. This problem has been alleviated to some extent by the development of several special sleeve/fastener combinations. The extreme temperature changes experienced by aircraft can cause differential thermal...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003554
EISBN: 978-1-62708-180-1
... with zinc-rich primer by both spraying and brushing. The piping was then welded. Several leaks were identified during hydrotest, and subsequent dye-penetrant examination revealed numerous cracks in the heat-affected zones of the welds. Metallography and EDS again revealed the presence of zinc...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003555
EISBN: 978-1-62708-180-1
... in boilers are employing thicker tubes of the same material; shielding tubes with clamp-on protectors; coating with thermal sprayed, corrosion-resistant materials; blending coals to reduce corrosive ash constituents; replacing tubes with higher-grade alloys or coextruded tubing; lowering final steam outlet...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006786
EISBN: 978-1-62708-295-2
... was put in place but not welded, the structural steel was painted with zinc-rich primer by both spraying and brushing. The piping was then welded. Several leaks were identified during hydrotest, and subsequent dye-penetrant examination revealed numerous cracks in the heat-affected zones (HAZs...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006939
EISBN: 978-1-62708-395-9
... due to poor thermal-oxidative stability ( Ref 1 ). The use of additives in thermosetting polymers is equally important. One of the oldest thermosets, Bakelite, exhibits high cure shrinkage, which leads to cracks in the mold material ( Ref 2 ). Suitable filler additives reduce the cure shrinkage...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006792
EISBN: 978-1-62708-295-2
... or a combination of ceramic and metal (cermet) materials, which are much harder than the underlying steel substrate ( Ref 136 ). Three major techniques are used for these coatings: physical vapor deposition, chemical vapor deposition, and thermal spray. Physical Vapor Deposition Coatings Overlay coatings...
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
... on the inside of the tube, or conversely. Therefore, thermal conductivity, wall thickness, and resistance to scaling are extremely important. In most cases, tensile strength and yield strength of the tubes are not significant factors; loading, because it is opposed by the internal pressure, is so low that tubes...
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
.... For example, aluminum is anodic to zinc in an aqueous 1 M sodium chromate (Na 2 CrO 4 ) solution and cathodic to iron in an aqueous 1 M sodium sulfate (Na 2 SO 4 ) solution ( Ref 4 ). Emf Series The emf series is a table that lists in order the standard electrode potentials of specified...
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
... Abstract Heat exchangers are devices used to transfer thermal energy between two or more fluids, between a solid surface and a fluid, or between a solid particulate and a fluid at different temperatures. This article first addresses the causes of failures in heat exchangers. It then provides...
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
..., damage sites, and edges in the noble metal coating. Sacrificial metal coatings provide cathodic protection of the more-noble base metal, as in the case of galvanized steel or alclad aluminum, which is widely used in the aircraft industry. Thermally sprayed aluminum coatings apply excellent, tough...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006787
EISBN: 978-1-62708-295-2
... oxidation, thermal cycling, internal oxidation, the presence of moisture, and chloride- and sulfur-containing gases shorten service compared with those predicted from isothermal oxidation. Loss of oxide adhesion and integrity can cause mechanical damage via spallation and cracking of the oxide film from...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006828
EISBN: 978-1-62708-329-4
... intergranular fracture at 300 °C (570 °F). High thermal strains from the brazing operation combined with the oxygen embrittlement near the surface could cause intergranular cracking. Surface Conditions Capillary flow of the brazing filler metal into the joint depends on base-metal surfaces that are clean...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003553
EISBN: 978-1-62708-180-1
... are anodic to the main body of the metal and therefore less resistant to corrosion because of precipitated phases, depletion, enrichment, or adsorption. In wrought high-strength heat treatable aluminum alloys, paths of stress-corrosion cracks are always intergranular, because the thermal treatments...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006810
EISBN: 978-1-62708-329-4
... processing requirements should also be noted. Special processing or finishing treatments, such as shot peening, fillet rolling, burnishing, plating, thermal spraying, and painting, can influence performance, and the analyst should be aware of such treatments. Mechanical Conditions How a shaft...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001808
EISBN: 978-1-62708-180-1
... of material, mechanical properties, heat treatment, test locations, nondestructive examination used, and other processing requirements should also be noted. Special processing or finishing treatments, such as shot peening, fillet rolling, burnishing, plating, metal spraying, and painting, can influence...