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thermal spray process

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Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003563
EISBN: 978-1-62708-180-1
..., chemical vapor deposition, and thermal spraying (TS). It provides a background to RCF in bearing steels in order to develop an understanding of failure modes in overlay coatings. The article describes the underpinning failure mechanisms of TiN and diamond-like carbon coatings. It presents an insight...
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
...: change 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...
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
... uncoated materials) in RCF conditions. This technology is now enjoying some degree of commercial availability, although it is less prevalent than PVD. In the thermal spray process, the coating material is received as solid (wire, rod, or powder), is melted, and then propelled onto the substrate...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001430
EISBN: 978-1-62708-236-5
... to fatigue. 2 It is apparent that restoration by the metal spraying process only results in insignificant heat input to a shaft and this is a further reason for its preference. While reclamation by this process will be found effective in the case of pump, motor and other shafts subjected to fairly steady...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003570
EISBN: 978-1-62708-180-1
.... , Abrasive and Erosive Wear of Some Hypervelocity Air Plasma Sprayed Coatings , Thermal Spray Coatings: Properties, Processes, and Applications, Proc. Fourth Nat. Thermal Spray Conf. , Bernecki T. , Ed., ASM International , 1992 , p 39 – 52 24. Sang K.-Z. and Li Y.-G...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001043
EISBN: 978-1-62708-214-3
... that plant startup and shutdown procedures be modified to reduce or eliminate the presence of the carburizing gas mixture. Carburization (corrosion) Chemical processing equipment Heat shields Thermal fatigue 304 UNS S30400 Brittle fracture Thermal fatigue fracture High-temperature corrosion...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001829
EISBN: 978-1-62708-241-9
... of superalloys and coatings in the laboratory [ 3 – 5 ], it is important that practical failures during service also be analyzed. In the present study, the first-stage vanes of gas turbine operated at 1350 °C were analyzed. The degradation process of thermal barrier coatings (TBC) and regenerated welding...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001408
EISBN: 978-1-62708-220-4
... been sprayed, presumably over its frill length, the structure of the coating, depicted in Figure 5 , being quite typical of this process. The deposited metal appeared to be a plain carbon steel and a partial chemical analysis confirmed this, as it did not show more than a trace of chromium or nickel...
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
... process sensitizes the steel, i.e., it causes the precipitation of chromium carbides along the grain boundaries, with a consequent depletion of dissolved chromium in these regions and a resulting loss of corrosion resistance. In addition, the weld thermal treatment produces significant residual tensile...
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 Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001702
EISBN: 978-1-62708-219-8
... concrete structures. The other 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...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003510
EISBN: 978-1-62708-180-1
... <xref rid="a0003510-ref6" ref-type="bibr">(Ref 6</xref>, <xref rid="a0003510-ref7" ref-type="bibr">7)</xref> When steels that may undergo transformational changes are quenched, the possibility of the formation of both thermal and transformational stresses must be considered. Figure 11 illustrates three different examples of this process...
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
... the electrochemical nature of corrosion and provides the typical analysis of environmental- and corrosion-related failures. It presents common methods of testing of laboratory corrosion and discusses the processes involved in the prevention of environmental- and corrosion-related failures of metals and nonmetals...
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
..., namely oxidation, carburization, metal dusting, nitridation, carbonitridation, sulfidation, and chloridation. Several other potential degradation processes, namely hot corrosion, hydrogen interactions, molten salts, aging, molten sand, erosion-corrosion, and environmental cracking, are discussed under...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006838
EISBN: 978-1-62708-329-4
... with carefully prescribed size distribution and shape and also compatibility with the laser beam itself. Further, the weldability and thermal conductivity of the powder feedstock significantly affect the ability to form a controllable melt pool. Selective laser melting (SLM) is a PBF process based on melting...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006835
EISBN: 978-1-62708-329-4
... thermal gradients and favor crack formation. Imperfections Created during Forging Many forging defects can be created during the forming process. The defects are almost always caused by improper flow during the forging process. Seams and laps are surface discontinuities that are caused by folding...
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
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006808
EISBN: 978-1-62708-329-4
..., and dissolved hydrogen ( Ref 13 , 14 ). The stress may arise from restraint by other components of a weldment or from the thermal stresses created by welding in a butt, groove, or T-joint. The process of HAZ cracking in steels ( Ref 15 ) is usually described as: Hydrogen is introduced into the hot weld...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006824
EISBN: 978-1-62708-329-4
... metal droplets deposited on a surface at high velocity; similar structures are intentionally formed by thermal spray coating. Energy-dispersive x-ray spectroscopy analysis of the metallic portions of the deposit revealed a chemical composition consistent with that of the first-stage blade alloy IN-700...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006794
EISBN: 978-1-62708-295-2
... is effective and economical. Various coating techniques can be used, including thermal spray, hardfacing, laser surface modification, physical vapor deposition, and chemical vapor deposition ( Ref 63 , 68 ). Ceramic-metal composite coatings (e.g., WC-CrNi, WC-Co, and WC-FeCrAl coatings) are often used...