Oxidation and alkali sulfate-induced corrosion of aluminide diffusion coating with and without platinum
Artikel i vetenskaplig tidskrift, 2008

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.

BEHAVIOR

NI-BASE SUPERALLOYS

BURNER RIG

HOT CORROSION

BOND COATINGS

Författare

Pavleta Knutsson

Chalmers University of Technology

Krystyna Marta Stiller

Chalmers, Teknisk fysik, Mikroskopi och mikroanalys

Materials and Corrosion - Werkstoffe und Korrosion

0043-2822 (ISSN) 1521-4176 (eISSN)

Vol. 59 484-488

Ämneskategorier

Annan teknik

DOI

10.1002/maco.200804131