Cyclic oxidation of palladium modified and nonmodified aluminide coatings deposited on nickel base superalloys

• Autorzy: Zagula-Yavorska M. , Sieniawski J.

Identyfikatory

DOI

10.1016/j.acme.2017.05.004

• Języki publikacji: EN

Abstrakty

EN

Palladium layer (7 μm thick) was deposited on the surface of the Inconel 713 LC, Inconel 625 and CMSX 4 Ni-base superalloys by the electroplating method. Electroplated samples were annealed at 1050 °C for 2 h in the argon atmosphere. The aluminide coatings were deposited by the CVD method. The nonmodified aluminide coating consists of the NiAl phase. Palladium modification let to formation of the (Ni,Pd)Al phase in coatings. The palladium modified as well as nonmodified coatings were oxidized at 1100 C in the air atmosphere. For both Inconel 713 LC and CMSX 4 superalloys palladium modified coatings show better oxidation resistance than nonmodified ones. Palladium inhibits the outward diffusion of substrate elements (cobalt and chromium) during oxidation of the aluminide coating. Moreover, it stabilizes the β-NiAl phase, keeps the higher content of aluminum in the β-NiAl phase for a long time and thus increases the lifetime of the coated substrate.

Słowa kluczowe

EN

palladium coatings; CVD process; degradation; oxidation

PL

degradacja; utlenianie; galwanizacja

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2018
• Tom: Vol. 18, no. 1
• Strony: 130--139
• Opis fizyczny: Bibliogr. 23 poz., rys., wykr.

Twórcy

autor

Zagula-Yavorska M.

• Department of Materials Science, Rzeszow University of Technology, W. Pola 2 str., 35-959 Rzeszow, Poland

autor

Sieniawski J.

• Department of Materials Science, Rzeszow University of Technology, W. Pola 2 str., 35-959 Rzeszow, Poland

Bibliografia

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018)