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thermal-barrier coated superalloys

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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 rate versus temperature. LTHC, low-temperature hot corrosion; HTHC, high-temperature hot corrosion. Courtesy of U.S. Navy Fig. 26 Schematic of cross section of a thermal barrier coating (TBC). Calcium-magnesium-alumino-silicate (CMAS) deposits on the TBC surface, which upon melting...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004158
EISBN: 978-1-62708-184-9
... to oxidation by itself so that if portions of the coating are lost, the component can successfully operate to the next inspection interval.) Occasionally, the temperature of the component is so high that additional cooling of the component is needed and/or a thermal barrier coating is needed to reduce...
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
... accelerate attack mainly through the loss of the protective scale ( Ref 4 ). Depending on the severity of the thermal cycles on a high-temperature component, spallation of thermal barrier, chromized, and aluminized coatings is probable. In certain instances, such as in nickel-base superalloys in high...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005737
EISBN: 978-1-62708-171-9
... compressors inlet nozzle guide vanes low-pressure compressors thermal spray coating transition ducts wear resistance FOR MANY YEARS, coatings have been successfully applied to aerospace engine components to improve life and performance. The key success areas have been in thermal barrier coatings...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002473
EISBN: 978-1-62708-194-8
... Aluminides—Present Status,” Paper No. 90-GT-319 , Presented at the ASME International Gas Turbine and Aeroengine Congress and Exhibition ( Brussels, Belgium ), June 1990 34. Miller R.A. and Lowell C.E. , Failure Mechanisms of Thermal Barrier Coatings Exposed to Elevated...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005746
EISBN: 978-1-62708-171-9
... Treatment G. Flores International Thermal Spray Conference and Exposition 2011 2011 Thermal Barrier Coatings for Rocket Engines J. Schloesser, M. Bäker, and J. Rösler International Thermal Spray Conference and Exposition 2011 2011 Thermal Spraying of Bioactive Polymer Coatings for Orthopaedic...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003151
EISBN: 978-1-62708-199-3
.... Coatings may be classified as intermetallic compounds, including silicides and aluminides that form compact or glassy oxide layers; alloys that form compact oxide layers; noble metals that resist oxidation; and stable oxides that provide a physical barrier to the penetration of oxygen. Although coating...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005733
EISBN: 978-1-62708-171-9
...Abstract Abstract This article presents a summary of the current and new materials and processing techniques for thermal barrier coatings (TBCs) and environmental barrier coatings (EBCs). Different thermal spraying and postspraying processing techniques are required to produce coatings...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003120
EISBN: 978-1-62708-199-3
... of superalloys, including primary and secondary melting, deformation processing (conversion), powder processing, investment casting, and joining methods. The article also describes the properties, microstructure, and thermal exposure of superalloys. It further discusses the effects of environmental factors...
Book Chapter

Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001293
EISBN: 978-1-62708-170-2
... solidified, or single crystal—of the alloys ( Ref 46 ). If these effects are limiting, designers may require use of more expensive overlay coatings of the MCrAlY (M = Co and/or Ni) and/or thermal barrier (zirconia) types. Visual and flow inspection of cooled airfoils before coating affords the last...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005732
EISBN: 978-1-62708-171-9
... from many industries. The numerous articles presented in this section that review market success stories and application case studies are: “Thermal Spray Coatings for Electrical and Electronic Applications” “Thermal and Environmental Barrier Coatings (TBCs/EBCs) for Turbine ldquo;Thermal Spray...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003671
EISBN: 978-1-62708-182-5
... temperature Presence of materials combinations, such as high-temperature coatings on superalloys Material interdiffusion coefficients between the materials and its high-temperature reaction product or between two dissimilar materials (i.e., coatings on superalloys) Coefficient of thermal expansion...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002466
EISBN: 978-1-62708-194-8
... , Vol 5 , ASM Handbook , ASM International , 1994 , p 556 – 572 69. Jones R.L. , Thermal Barrier Coatings , Metallurgical and Ceramic Protective Coatings , Stern K. , Ed., Chapman and Hall , 1996 , p 194 70. Rhode S.L. , Sputter Deposition , Surface Engineering...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001101
EISBN: 978-1-62708-162-7
... physical properties superalloy-matrix composites METAL-MATRIX COMPOSITES (MMCs) are a class of materials with potential for a wide variety of structural and thermal management applications. Metal-matrix composites are capable of providing higher-temperature operating limits than their base metal...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003219
EISBN: 978-1-62708-199-3
... industry for applying MCrAlY metallic coatings on turbine blades and vanes for oxidation and corrosion protection. Zirconia thermal barrier coatings (TBCs) can also be deposited using this technique. Bond coats for EB/PVD TBCs are normally MCrAlY-type coatings, similarly processed. The major advantage...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003219
EISBN: 978-1-62708-199-3
... for oxidation and corrosion protection. Zirconia thermal barrier coatings (TBCs) can also be deposited using this technique. Bond coats for EB/PVD TBCs are normally MCrAlY-type coatings, similarly processed. The major advantage of EB/PVD TBCs is the columnar outer structure of the zirconium dioxide (ZrO 2...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003686
EISBN: 978-1-62708-182-5
... vapor deposition Physical vapor deposition (thermal evaporation, ion sputtering, ion plating) Surface modified coatings Diffusion-induced modification of chemical composition and/or microstructure of substrate Pack cementation Slurry cementation Metalliding Hot dipping Surface...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001299
EISBN: 978-1-62708-170-2
...Abstract Abstract This article discusses the various tests applied to a thermal barrier coating system and to the zirconia layer to establish thermomechanical, environmental stability, and thermal design properties such as coefficient of thermal expansion, specific heat, and thermal transport...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001318
EISBN: 978-1-62708-170-2
... graphite up to temperatures as high as 2100 °C (3812 °F). This concept relied on the very low carbon diffusivity and oxygen permeability of iridium as a solid oxygen barrier. While some success was achieved, significant problems associated with volatile oxide formation, adherence, and the high thermal...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005706
EISBN: 978-1-62708-171-9
... spray coatings generally are degraded by porosity. However, porosity may be beneficial in some thermal barrier applications and in some tribological applications through retention of lubricating oil films. Porosity also may be beneficial in some coatings on biomedical implants to allow the ingrowth...