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Oxidation and alkali sulfate-induced corrosion of aluminide diffusion coating with and without platinum

P. A. Knutsson ; Krystyna Stiller (Institutionen för teknisk fysik, Mikroskopi och mikroanalys)
Materials and Corrosion-Werkstoffe Und Korrosion (0947-5117). Vol. 59 (2008), 6, p. 484-488.
[Artikel, refereegranskad vetenskaplig]

A platinum-free (MDC210) and a platinum-rich (MDC150L) aluminide diffusion coating applied to a CMSX4 single crystal Ni-based superalloy were investigated after exposure to sulfate-induced corrosion and oxidation at 900 degrees C for a total of 100 h. Weight changes, microstructural, and microchemical analyses of the products were performed by the means of gravimetry, scanning electron microscopy (SEM), energy dispersive X-ray (EDX), and X-ray diffraction (XRD). Platinum was found to have a beneficial effect on both the oxidation and corrosion resistance of the coating. In both cases the scale was thicker on the platinum-free coating. However, the difference in the extent of oxidation of the two coatings was small.

Nyckelord: NI-BASE SUPERALLOYS, BOND COATINGS, HOT CORROSION, BURNER RIG, BEHAVIOR



Denna post skapades 2009-10-26. Senast ändrad 2016-07-21.
CPL Pubid: 100809

 

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Institutioner (Chalmers)

Institutionen för teknisk fysik, Mikroskopi och mikroanalys (2005-2012)

Ämnesområden

Teknisk fysik

Chalmers infrastruktur

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