Structure and hot corrosion behavior of platinum-modified aluminide coatings

Streiff, R.; Cerclier, O.; Boone, D.H.

doi:10.1016/0257-8972(87)90101-0

Cited by 59 publications

(32 citation statements)

References 10 publications

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“…The observed decrease in weight gain with increasing Pt content confirms the generally accepted fact that Pt addition improves HTHC resistance of 3-based alloys and coatings [67,68,72,73]. Pre-oxidation of these alloys was not beneficial in further improving HTHC resistance.…”

Section: ] Type I Hot Corrosion (900qc)supporting

confidence: 69%

“…Indeed, addition of Pt tends to reduce surface spallation by promoting the slow growth of extremely adherent cc-A1 2 0 3 scale [68]. Haynes et al [74] and Zhang et al [75] found that, along with improved scale adhesion, Pt also helped in decreasing detrimental effects of high S levels in the substrate and reducing the amount of voids at the scale/metal interface.…”

Section: Hot Corrosion Ofpt-modified Alloys/coatings and Mcraly-basedmentioning

confidence: 99%

“…Hot corrosion resistance of aluminide coatings is improved by the addition of modifying elements like Pt [67,68], Cr [69,70] and Si [72].…”

Section: Hot Corrosion Ofpt-modified Alloys/coatings and Mcraly-basedmentioning

confidence: 99%

“…Platinum addition has been found to improve Type I hot corrosion and oxidation resistance of [-NiAl coatings [67,68,72,73]. Indeed, addition of Pt tends to reduce surface spallation by promoting the slow growth of extremely adherent cc-A1 2 0 3 scale [68].…”

Section: Hot Corrosion Ofpt-modified Alloys/coatings and Mcraly-basedmentioning

confidence: 99%

“…The effect of platinum in improving Type I and oxidation resistance of [3-NiAl is quite well known [67,68,72,73]. In order to study the effect of Pt in 3-NiAl for the Type II hot corrosion resistance, an additional set of experiments were carried out using …”

Section: High Temperature Hot Corrosion (Hthc)mentioning

confidence: 99%

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Optimizing the Hot-Corrosion Resistance-of-Novel gamma-Ni+gamma-prime-Ni3A1-Based Alloys and Coatings

Gleeson¹

2006

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The public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing the burden, to Department of Defense, Washington Headquarters Services, Directorate for Information Operations and Reports (0704-0188), 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to any penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number. PLEASE DO NOT ABSTRACTHigh temperature degradation by hot corrosion (650-1000 C) and/or oxidation (>1000 C) can severely reduce the longevity of advanced gas turbine engine components. The protection of high-temperature components against hot corrosion or oxidation is typically conferred by the application of either a diffusion or overlay metallic coating that is able to form a continuous, adherent, and slow growing oxide scale. There are currently no coatings that provide adequate protection to both hot corrosion and oxidation. This study assesses and advances the performance of novel modified gamma-Ni + gamma-prime Ni3AI alloys and coatings. Significant progress was achieved in this study towards the targeted goal of establishing a metallic coating that is highly resistant to both hot corrosion and high temperature oxidation. High temperature degradation by hot corrosion (650-1000'C) and/or oxidation (>1000°C) can severely reduce the longevity of advanced gas turbine engine components. The protection of high-temperature components against hot corrosion or oxidation is typically conferred by the application of either a diffusion or overlay metallic coating that is able to form a continuous, adherent, and slow growing oxide scale. However, as is shown in this study, the resistance of state-of-the-art commercial Pt-modified P3-NiA1 diffusion aluminides and CoCrAIY-based overlay coatings against both Type I (i.e., 900 0 C) and Type II (i.e., 705TC) hot corrosion is limited. Thus, there are currently no coatings that provide adequate protection to both hot corrosion and oxidation. There is indeed a particular need for such protective coatings because many advanced aero, marine, and industrial gas-turbines operate in both hot corrosion and oxidation regimes in their duty cycle. Gleeson et al. [1] recently reported that a wide range Pt+Hf-modified y'-Ni 3 Al + yNi alloy compositions form a thin, planar, adherent, and slow growing A1 2 0 3 scale. In fact, the results reported suggest that Pt+Hf-modified y'+y coatings offer a viable superior alternative to P-NiAl(Pt)-based coatings. Thus, a main aim of the present study was to establish and assess optimum target y' +y...

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Section: ] Type I Hot Corrosion (900qc)supporting

confidence: 69%

Section: Hot Corrosion Ofpt-modified Alloys/coatings and Mcraly-basedmentioning

confidence: 99%

“…Hot corrosion resistance of aluminide coatings is improved by the addition of modifying elements like Pt [67,68], Cr [69,70] and Si [72].…”

Section: Hot Corrosion Ofpt-modified Alloys/coatings and Mcraly-basedmentioning

confidence: 99%

Section: Hot Corrosion Ofpt-modified Alloys/coatings and Mcraly-basedmentioning

confidence: 99%

Section: High Temperature Hot Corrosion (Hthc)mentioning

confidence: 99%

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Optimizing the Hot-Corrosion Resistance-of-Novel gamma-Ni+gamma-prime-Ni3A1-Based Alloys and Coatings

Gleeson¹

2006

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High Temperature Corrosion in Marine Environments

Shifler¹

2022

LaQue's Handbook of Marine Corrosion

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High‐Temperature Oxidation and Corrosion of Intermetallics

Brady

Pint

Tortorelli

et al. 2013

Materials Science and Technology

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The sections in this article are Introduction Oxidation Fundamentals Protective Oxide Scale Formation Reactive Elements Overview Effects on Oxidation Production of Alloys with RE Additions Applicability and Limitations Pesting Ni  Al Based Intermetallics Overview Ni Al Transient Oxidation Steady‐State Oxidation Effect of Al Content Alloying Additions Other Corrosive Environments Ni 3 Al Transient Oxidation Steady‐State Oxidation Alloying Effects Fe  Al Based Intermetallics Overview Historical Perspective Thermodynamic and Kinetic Considerations in the Fe  Al  O System Fe 3 Al Fe Al Other Corrosive Environments Sulfur‐Containing Gases Chlorine‐Containing Gases Carbon‐Containing Gases Molten Salts and Condensed Deposits Ti  Al Based Intermetallics Overview Ti Al 2 Ti Al 3 τ Phase γ‐ Ti Al Thermodynamic Considerations The Nitrogen Effect Effects of Alloying Additions Engineering Considerations Other Corrosive Environments α 2 ‐ Ti 3 Al and Orthorhombic Ti 2 Al Nb α 2 Alloys Orthorhombic Alloys Nb  Al Based Intermetallics Overview Nb Al 3 Nb 2 Al Nb 3 Al Nb  Ti  Al Precious Metal, Exotic, and Miscellaneous Aluminides Pt  Al Intermetallics Ir  Al Intermetallics Ru  Al Intermetallics Co  Al Intermetallics V  Al Intermetallics Laves Phases and In‐Situ Composites Overview Single‐Phase Laves Alloys Nb  Nb Cr 2 In‐Situ Composites Cr XCr 2 Type In‐Situ Composites Ni Al ‐Based In‐Situ Composites γ‐ Ti Al + Ti ( Cr , Al ) 2 and Nb Al 3 + Nb ( Cr , Al ) 2 In‐Situ Composites Silicides Overview and General Considerations Mo Si 2 Overview High‐Temperature Oxidation Accelerated Oxidation and Pesting Effects of Alloying Additions Composites Other Corrosive Environments Mo 5 Si 3 Ti Si 2 and Ti 5 Si 3 Ti Si 2 Ti 5 Si 3 V 5 Si 3 Cr 3 Si Fe and Ni Silicides Other Silicides Beryllides Overview Complex Beryllides– MBe 13 , MBe 12 , and M 2 Be 17 MBe 2 MBe Phases Acknowledgements

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Structure and hot corrosion behavior of platinum-modified aluminide coatings

Cited by 59 publications

References 10 publications

Optimizing the Hot-Corrosion Resistance-of-Novel gamma-Ni+gamma-prime-Ni3A1-Based Alloys and Coatings

Optimizing the Hot-Corrosion Resistance-of-Novel gamma-Ni+gamma-prime-Ni3A1-Based Alloys and Coatings

High Temperature Corrosion in Marine Environments

High‐Temperature Oxidation and Corrosion of Intermetallics

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