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Development of a metal dusting resistant functional coating by Sn and Al pack cementation

S. Madloch ; M. C. Galetz ; Christine Geers (Institutionen för kemi och kemiteknik, Oorganisk miljökemi) ; M. Schütze
Surface & Coatings Technology (0257-8972). Vol. 299 (2016), p. 29.
[Artikel, refereegranskad vetenskaplig]

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.

Nyckelord: Coating; Metal dusting; Nickel-aluminide; Pack cementation; Protective oxide formation



Denna post skapades 2016-07-06. Senast ändrad 2016-08-30.
CPL Pubid: 239051

 

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Institutioner (Chalmers)

Institutionen för kemi och kemiteknik, Oorganisk miljökemi

Ämnesområden

Oorganisk kemi

Chalmers infrastruktur