Development of a metal dusting resistant functional coating by Sn and Al pack cementation
Artikel i vetenskaplig tidskrift, 2016

A new coating against metal dusting is developed by the combination of a catalytic inhibition approach with a classical oxide barrier. Coatings were manufactured by co-deposition of tin and aluminum on nickel plated alloy 800H via powder pack cementation with different dwell times. The resulting coatings consist of two phases, a nickel-aluminide phase as oxide forming reservoir and an underlying nickel-tin phase which catalytically inhibits carbon deposition. Coated samples were exposed to H2-22%CO-10%H2O as a laboratory metal dusting environment as well as air at 620 °C. Cross sectional analysis revealed no sign for metal dusting and the formation of a thin alumina layer at the surface.

Metal dusting

Pack cementation

Protective oxide formation

Nickel-aluminide

Coating

Författare

S. Madloch

DECHEMA Gesellschaft fur Chemische Technik und Biotechnologie e.V.

M. C. Galetz

DECHEMA Gesellschaft fur Chemische Technik und Biotechnologie e.V.

Christine Geers

Chalmers, Kemi och kemiteknik, Energi och material, Oorganisk miljökemi

M. Schütze

DECHEMA Gesellschaft fur Chemische Technik und Biotechnologie e.V.

Surface and Coatings Technology

0257-8972 (ISSN)

Vol. 299 29-

Ämneskategorier

Oorganisk kemi

DOI

10.1016/j.surfcoat.2016.04.067