High temperature oxidation and corrosion of gas turbine component materials in burner rig exposures

Sumner, Joy; Encinas-Oropesa, A.; Simms, N.J.; Oakey, J.E.

doi:10.1179/096034011x13198126967382

Cited by 2 publications

(3 citation statements)

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“…Emerging problem areas of environmental degradation in turbines are gas phase embrittlement, oxidation, and low temperature hot corrosion (LTHC) of advanced disk alloys used in the high pressure turbine stage . This issue becomes more critical at the highly stressed disk and blade attachment regions.…”

Section: Introductionmentioning

confidence: 99%

Interfacial reactions of a MAX phase/superalloy hybrid

Smialek

Garg

2015

Surface & Interface Analysis

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Oxidation resistant, strain tolerant MAX phase coatings are of general interest for high temperature applications. Accordingly, Cr 2 AlC MAX phase coupons were vacuum diffusion bonded to an advanced turbine disk alloy at 1100°C for compatibility studies. The interface revealed an inner diffusion zone consisting of~10 μm of β-Ni(Co)Al, decorated with various γ′ (Ni,Co) 3 Al, Ta(Ti,Nb)C, and W(Cr,Mo) 3 B 2 precipitates. On the Cr 2 AlC side, an additional~40-μm Al-depletion zone of Cr 7 C 3 formed an interconnected network with the β-Ni(Co)Al. On the superalloy side, enhanced carbide precipitation developed over a depth of~80 μm. Subsequent annealing for 100 h and 1000 h at 800°C coarsened some features, enhanced TCP precipitation in the superalloy, but only enlarged the diffusion layers by~5 μm at most. Because of Al depletion from the MAX phase and corresponding Al enrichment of the alloy, the reaction zone displayed similarities to an oxidized Cr 2 AlC surface and an aluminized superalloy, respectively. Published 2015. This article is a U.S. Government work and is in the public domain in the USA.

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Section: Introductionmentioning

confidence: 99%

Interfacial reactions of a MAX phase/superalloy hybrid

Smialek

Garg

2015

Surface & Interface Analysis

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“…8,9 Those type of coatings are used in mainly in aero jest engines and in gas turbine technologies. 10,11 The TBC are generally based on yttria-stabilized zirconia phase deposited by electron-beam physical vapor deposition (EB-PVD) or APS process. 12,13 On the other hand, mullite is an excellent alternative material for zirconia and can be used as TBC for the high-temperature gradient fields.…”

Section: Introductionmentioning

confidence: 99%

“…The coatings are called thermal barrier coatings (TBC) 8,9 . Those type of coatings are used in mainly in aero jest engines and in gas turbine technologies 10,11 . The TBC are generally based on yttria‐stabilized zirconia phase deposited by electron‐beam physical vapor deposition (EB‐PVD) or APS process 12,13 .…”

Section: Introductionmentioning

confidence: 99%

Effect of ceramic‐based coatings deposited on low‐alloyed steel T/P22 10H2M exposed at high temperature

Rząd

Polczyk

Figiel

et al. 2021

Int J Applied Ceramic Tech

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The study was carried out in order to evaluate oxidation resistance of the ceramic coatings based on SiO 2 -B 2 O 3 -TiO 2 -Na 2 O composition deposited on the low-alloyed steel T/P22 (10H2M) surface exposed for 1000 h at 540°C in oxidation atmosphere. Kinetic data were recorded periodically every 250 h; macro-and microanalyses as well as chemical composition were carried out using macrolenses, SEM, EDS, EDS X-ray mappings. The results indicated a high degree of protection by ceramic coatings; much lower mass gain was observed for the coated materials than for the uncoated T/P22 (10H2M) steel. No detachment, delamination, chipping of a coating were found from the steel surface; some of the coatings showed perpendicular tiny cracks to the bulk metal surface.

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High temperature oxidation and corrosion of gas turbine component materials in burner rig exposures

Cited by 2 publications

References 0 publications

Interfacial reactions of a MAX phase/superalloy hybrid

Interfacial reactions of a MAX phase/superalloy hybrid

Effect of ceramic‐based coatings deposited on low‐alloyed steel T/P22 10H2M exposed at high temperature

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