Paper Title:
Thermal Stability of NiAl-Base Coatings for High Temperature Application
  Abstract

Aluminide diffusion coatings act as a remedy against the aggressive environments in which modern aero-gas turbines operate. Platinum addition to basic aluminide coatings significantly improves the oxidation resistance of these coatings. The increase in operating temperatures of industrial energy systems and gas turbines, has led to the extensive use of coatings capable of providing improved service life. Interdiffusion plays a critical role in understanding the integrity of such coatings. The Danielewski-Holly model of interdiffusion which allows for the description of a wide range of processes (including processes stimulated by reactions at interfaces) is employed for studying of interdiffusion in the Pt-modified β-NiAl coatings. Using the inverse method the intrinsic diffusivities of Ni, Al and Pt were calculated. Such obtained diffusivities were subsequently used for modelling of thermal stability of Pt-modified aluminide coatings in air and in argon atmosphere.

  Info
Periodical
Defect and Diffusion Forum (Volumes 237-240)
Edited by
M. Danielewski, R. Filipek, R. Kozubski, W. Kucza, P. Zieba, Z. Zurek
Pages
709-714
DOI
10.4028/www.scientific.net/DDF.237-240.709
Citation
R. Filipek, M. Danielewski, E. Tyliszczak, M. Pawełkiewicz, S. Datta, "Thermal Stability of NiAl-Base Coatings for High Temperature Application", Defect and Diffusion Forum, Vols. 237-240, pp. 709-714, 2005
Online since
April 2005
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Price
$32.00
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