Copyright © 2007 Elsevier B.V. All rights reserved.Juul Rasmussen, AndersAgüero, AlinaGutiérrez del Olmo, MarcosLandeira Østergård, María José2025-12-012025-12-012007-07-05Surface and Coatings Technology 202(8): 1479-14852578972https://www.sciencedirect.com/science/article/abs/pii/S0257897207006998https://hdl.handle.net/20.500.12666/1546Two slurry aluminide coatings are produced on the Ni-base super alloy Inconel 690 by applying two different thicknesses of the same slurry on to the 690 substrate, followed by a two-step heat-treatment. The resulting thin aluminide coating consists of a single layer of Ni-rich β-NiAl matrix containing few large Cr precipitates with a high P content. The thick aluminide coating has a precipitate free inner layer of Ni-rich β-NiAl. An outer layer of Al-rich β-NiAl with many α-Cr precipitates has formed as well. The present metallurgical characterization shows a significant influence of slurry thickness on the morphology and composition of the coatings formed during heat treatment.engMicrostructuresAluminide coatingsinfo:eu-repo/semantics/article10.1016/j.surfcoat.2007.06.056info:eu-repo/semantics/restrictedAccess