publication . Article . Other literature type . 2006

Investigation of the microstructure of platinum-modified aluminide coatings

Fernando Pedraza;
Open Access English
  • Published: 01 Mar 2006
  • Publisher: HAL CCSD
Abstract
International audience; The high temperature performance of Pt-modified aluminide coatings is directly related to their composition and microstructure. In this work, several of the factors that control such features are investigated on a single crystal Ni base superalloy. It will be shown that the bi-phase PtAl2 + (Ni,Pt)Al composition is more prone to occur at higher Pt surface concentrations, lower temperatures and shorter aluminising treatments. The alloying elements also seem to play a role in the achievement of either a single or a bi-phase structure. Finally, the incorporation of different elements to the Pt/Al coatings brings about shifting of the X-ray p...
Subjects
free text keywords: single crystal nickel superalloy, out-of-pack platinum-modified aluminide coatings, single phase, [CHIM.MATE]Chemical Sciences/Material chemistry

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