Effect of Pt and Al content on the long-term, high temperature oxidation behavior and interdiffusion of a Pt-modified aluminide coating deposited on Ni-base superalloys

Vialas, Nadia; Monceau, Daniel

doi:10.1016/j.surfcoat.2006.07.246

Cited by 62 publications

(17 citation statements)

References 38 publications

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“…It is evident that there are voids near the interface between the outer layer and the IDZ. Such pores have also been observed in the b-(Ni,Pt)Al coating/superalloy system after long-term oxidation [20]. There are three major fluxes in the coating.…”

Section: Characterization Of the As-deposited Platinummentioning

confidence: 70%

Diffusion behaviour of Pt in platinum aluminide coatings during thermal cycles

Chen

Yang

et al. 2017

International Journal of Materials Research

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Two-phase PtAl 2 +b-(Ni,Pt)Al and single-phase b-(Ni,Pt)Al coatings were fabricated on DD5 Ni-based superalloy and pure Ni substrates. A coating/pure Ni substrate system was studied to determine the diffusion behaviour of Pt in the Ni-Al-Pt ternary system. The evolutions of morphology, phases and component concentration during thermal cycles were analysed. It was found that there is a phase shift from PtAl 2 to b* in the two-phase coating, and Kirkendall porosity was observed in the single-phase coating. Our results further indicated that there are two different diffusion paths of Pt in the Ni-Al-Pt system.

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Section: Characterization Of the As-deposited Platinummentioning

confidence: 70%

Diffusion behaviour of Pt in platinum aluminide coatings during thermal cycles

Chen

Yang

et al. 2017

International Journal of Materials Research

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“…Two other solutions can be considered in order to improve the aluminide mechanical properties: by modifying their microstructure using an innovative elaboration process [241][242][243], or by applying the intermetallic compounds directly on a metal or alloy surface [33,[244][245][246][247][248][249][250][251].…”

Section: Recent Developments In Alumina-forming Materials: Intermetalmentioning

confidence: 99%

Formation and growth of protective alumina scales

Chevalier

2008

Developments in High Temperature Corrosion and Protection of Materials

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“…However, due to the difference in thermal expansion between Al 2 O 3 and the superalloy, the Al 2 O 3 film generated for protection of the superalloy can detach at its interface with the superalloy when thermal shock occurs. As a result, Al is depleted and the coating is degraded [7,8]. Hence, the cyclic oxidation behavior of the coating is a very important factor which determines the ultimate life-time of Pt-modified aluminide coatings.…”

Section: Introductionmentioning

confidence: 99%