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thermal-barrier coated superalloys

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280287
EISBN: 978-1-62708-267-9
... protective coatings, including aluminide diffusion, overlay, and thermal barrier types, and how they perform in different environments based on their ability to tolerate strain. coatings corrosion resistance corrosion testing hot corrosion superalloys...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240563
EISBN: 978-1-62708-251-8
... – 284 • Clarke D.R. and Phillpot S.R. , Thermal Barrier Coating Materials , Mater. Today , June 2005 , p 23 • Davis J.R. , Alloying: Understanding The Basics , ASM International , 2001 • DeAntonio D.A. et al. , Heat Treating of Superalloys , Heat...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280365
EISBN: 978-1-62708-267-9
... – 38 10.1007/BF03222662 • Meier S.M. and Gupta D.K. , The Evolution of Thermal Barrier Coatings in Gas Turbine Engine Applications , J. Eng. Power (Trans. ASME) , Vol 116 , 1994 , p 250 – 257 10.1115/1.2906801 • Besenicar S. et al. , The High Temperature...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.sap.t53000001
EISBN: 978-1-62708-313-3
...) ( Ref 4 ). With further increases in the turbine inlet temperature, researchers are now striving to find the next generation of materials, in combination with thermal barrier coatings, that will perform at even higher temperatures. More recently, the emphasis in new superalloy development is on cost...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.tb.hpcspa.t54460185
EISBN: 978-1-62708-285-3
.... , and Xing L.-K. , Thermal Fatigue Behavior of Thermal Barrier Coatings with the MCrAlY Bond Coats by Cold Spraying and Low-Pressure Plasma Spraying , Surf. Coat. Technol. , Vol 205 , 2010 , p 2225 – 2234 10.1016/j.surfcoat.2010.08.144 7.18 Richer P. , Zuniga A. , Yandouzi M...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280339
EISBN: 978-1-62708-267-9
... oxidation capability of superalloys Reduced hot corrosion capability of superalloys Increased reliance on coatings for surface protection against corrosion Partial reliance on thermal barrier coatings for protection against high temperatures Increased manufacturing complexity (in part, owing...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280323
EISBN: 978-1-62708-267-9
... oxidation. While this sort of problem may be prevented or minimized by use of a protective oxidation-resistant coating or a thermal-barrier coating, there are other mechanical problems that can occur. A magnified view of a section of the combustion chamber is shown in Fig. 14.10 . Note the TMF cracking...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.sap.t53000059
EISBN: 978-1-62708-313-3
... Diffusion-Barrier-Coating System on a Ni-Base Single Crystal Superalloy and Its Stability at 1423 K , Oxid. Met. , Vol 68 , 2007 , p 313 – 329 10.1007/s11085-007-9077-7 50. Kearsey R. , “ Compositional Effects of Microsegregation Behaviour in Single Crystal Superalloy Systems ,” Ph.D...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.sap.t53000017
EISBN: 978-1-62708-313-3
... in imperfect crystals at elevated temperatures ( Ref 3 ). A lower SFE makes it more difficult for dislocations to change directions; thus, when a dislocation encounters a barrier, it is more difficult for the dislocation to be able to bypass that barrier by moving onto a new slip plane ( Ref 1 ). In face...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740325
EISBN: 978-1-62708-308-9
... Abstract This chapter covers a wide range of finishing and coating operations, including cleaning, honing, polishing and buffing, and lapping. It discusses the use of rust-preventative compounds, conversion coatings, and plating metals as well as weld overlay, thermal spray, and ceramic...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.sap.t53000025
EISBN: 978-1-62708-313-3
... occurring at higher mismatch values ( Ref 12 ). In polycrystalline superalloys, diffusion and creep deformation occur preferentially at grain boundaries. These are followed by void formation and eventually by cracking. Furthermore, thermal fatigue cracks have been observed to initiate from grain...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170337
EISBN: 978-1-62708-297-6
... resistance developed through preoxidation) Permanent molds (the ability to develop a thermal barrier coating by high-temperature oxidation) Fig. 3 Comparison of the carburization resistance of Ni 3 Al-base alloys with that of alloy 800. (a) Oxidizing carburizing environment. (b) Reducing...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240583
EISBN: 978-1-62708-251-8
..., and relatively low thermal expansions compared to other metals. Unfortunately, despite their high-temperature resistance, all of them oxidize severely at relatively low temperatures and therefore require oxidation-resistant coatings for elevated-temperature use. Protective coating systems have been developed...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550299
EISBN: 978-1-62708-307-2
... material. The degradation in the fatigue life of titanium aluminides by coatings results from three main factors: the formation of brittle coating/substrate reaction zones (chemical incompatibility), the brittleness of the coating alloy, and the differences in the coefficient of thermal expansion (CTE...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280135
EISBN: 978-1-62708-267-9
..., if a temperature cycle is not called for in an alloy specification, then it is not a heat treatment. A few examples of treatments that are often overlooked by people charged with the application of superalloys (mostly precipitation-hardened iron-nickel- and nickel-base superalloys) are: Applying a thermal...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240323
EISBN: 978-1-62708-251-8
... oxide protector, especially when thermal cycling is involved. Chromium and aluminum can contribute in an interactive manner to provide oxidation protection. For example, the higher the chromium content, the less aluminum that may be required. However, the alloy content of many superalloys...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550569
EISBN: 978-1-62708-307-2
... and paper, and is often driven by the desire to increase energy efficiency and/or reduce emissions. Current metals-based technology can produce materials that are stable to approximately 1000 °C (1830 °F), and superalloys can be used to slightly higher temperatures if thermal barrier coatings and cooling...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030025
EISBN: 978-1-62708-282-2
... of the alloy or in the provision of an external coating rich in the scale-forming elements. The breakdown of protective scales based on Cr 2 O 3 or Al 2 O 3 appears, in the majority of cases, to originate through mechanical means. The most common is spallation as a result of thermal cycling, or loss...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.t68350095
EISBN: 978-1-62708-315-7
... of an alumina protective layer and can be used up to about 1150 °C (2100 °F), but the coating can degrade by spallation of the oxide during thermal cycling. For extended periods of time at temperatures in excess of 1000 °C (1830 °F), interdiffusion of the coating will cause further degradation, and therefore...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120131
EISBN: 978-1-62708-269-3
..., and heat treated particulate-reinforced aluminide missile fin Although matrix-fiber compatibility and resulting strength, ductility, and durability are always of concern in creating TMC materials, the principal barrier to their application is the processing necessary to create parts of TMC. Silicon...