Mitigation of platinum depletion in platinum diffused single phase bond coat on CMSX-4 superalloy

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dc.contributor.authorBai, Mingwen
dc.contributor.authorChen, Ying
dc.contributor.authorSun, Yongle
dc.contributor.authorXiao, Ping
dc.date.accessioned2021-06-21T13:43:03Z
dc.date.available2021-06-21T13:43:03Z
dc.date.issued2021-05-31
dc.description.abstractPt-diffused bond coat with a mixture of γ/γ’ phase has just been developed in the recent decades as a cheaper alternative to the Pt-enriched β-phase Aluminide bond coat that contains a higher content of Al. However, concerns are raised on the inevitable depletion of Pt near the coating interface that may endanger the component after long-term service. In this study, modified Pt-diffused bond coats with a single phase (γ or γ’) were made by applying selective etching on CMSX-4 single crystal superalloys prior to the electroplating of Pt. The single-phase bond coats show distinctive diffusion behaviour in comparison with the conventional γ/γ’ bond coat. Surprisingly, Pt remains more stable in the γ’-phase bond coat with significantly less depletion after diffusion, which implies a potential in saving a considerable amount of Pt. On the other hand, however, the depletion of Pt is more severe in the γ-phase bond coat. The mechanism that governs the diffusion behavior of Pt in the γ and γ’-phase was also discussed that mainly concerns with thermodynamic and kinetic factors.en_UK
dc.identifier.citationBai M, Chen Y, Sun Y, Xiao P. (2021) Mitigation of platinum depletion in platinum diffused single phase bond coat on CMSX-4 superalloy. Coatings, Volume 11, Issue 6, May 2021, Article number 669en_UK
dc.identifier.issn2079-6412
dc.identifier.urihttps://doi.org/10.3390/coatings11060669
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/16794
dc.language.isoenen_UK
dc.publisherMDPIen_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectbond coaten_UK
dc.subjectplatinumen_UK
dc.subjectdiffusionen_UK
dc.subjectthermodynamicen_UK
dc.subjectthermal barrier coatingsen_UK
dc.titleMitigation of platinum depletion in platinum diffused single phase bond coat on CMSX-4 superalloyen_UK
dc.typeArticleen_UK

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