Paper Title:
Effect of Material and Environmental Parameters on the Microstructure Evolution and Oxidation Behavior of a Ni-Based Superalloy Coated with a Pt-Modified Ni-Aluminide
  Abstract

The present work, performed on nickel aluminides deposited on a single Ni-based superalloy AM1, focuses on the effect of the following several parameters on the microstructural and chemical changes occurring during isothermal heat treatment at 1100°C for 50h : -oxygen pressure by comparing heat treatment under ambient air (PO2 = 0.2 bar) and under secondary vacuum (PO2 = 0.2x10-6 bar). -cooling rate after isothermal heat treatment by comparing furnace cooling (3°C/min) and water quenching (500°C/min). -Pt addition in the coating by comparing NiAl and NiPtAl coatings. Characterizations were performed using SEM, analytical TEM and electron microprobe analyses. The results show that these parameters have a strong influence on both the microstructural evolution and the oxidation of the thermal barrier coating (TBC) system. Appropriate heat treatments are essential to improve interfacial resistance and increase the durability of TBC systems.

  Info
Periodical
Materials Science Forum (Volumes 595-598)
Edited by
Pierre Steinmetz, Ian G. Wright, Alain Galerie, Daniel Monceau and Stéphane Mathieu
Pages
33-40
DOI
10.4028/www.scientific.net/MSF.595-598.33
Citation
M. Chieux, R. Molins, L. Rémy, C. Duhamel, M. Sennour, Y. Cadoret, "Effect of Material and Environmental Parameters on the Microstructure Evolution and Oxidation Behavior of a Ni-Based Superalloy Coated with a Pt-Modified Ni-Aluminide", Materials Science Forum, Vols. 595-598, pp. 33-40, 2008
Online since
September 2008
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: T. Koutsoukis, S. Zormalia, P. Kokkonidis, E. Papadopoulou, P. Tsakiridis, G. Fourlaris
Abstract:Cold rolling followed by ageing in two grades of superaustenitic stainless steel was performed in order to assess the effect of cold...
301
Authors: Shingo Mineta, Alfirano, Shigenobu Namba, Takashi Yoneda, Kyosuke Ueda, Takayuki Narushima
Abstract:The phase and morphology of precipitates in heat-treated Co-28Cr-6Mo-xC (x = 0.12, 0.15, 0.25, and 0.35mass%) alloys were investigated. The...
2176
Authors: Kumkum Banerjee, Michel Perez, Matthias Militzer
Abstract:Non-isothermal austenite grain growth kinetics under the influence of several combinations of Nb, Ti and Mo containing complex precipitates...
809
Authors: Cheng Dong Xia, Ming Pu Wang, Gen Ying Xu, Wan Zhang, Yan Lin Jia, Hong Chun Yu
Abstract:The microstructure and properties of Cu-0.4wt%Cr alloys prepared by a shortened process and a conventional process were investigated by means...
1890
Authors: Patrick Ganster, Bagas Pujilaksono, Krzysztof Wolski
Chapter 6: Diffusion and Corrosion Processes
Abstract:Ni-14wt%W model-alloy has been used to study the kinetics and the mechanism of high temperature internal oxidation in presence of an external...
321