Paper Title:
Numerical Simulation for Surface Modification of Thermal Barrier Coatings by High-Current Pulse Electron Beam
  Abstract

High current pulsed electron beam is an effective technique for surface sealing of ceramic thermal barrier coatings prepared by electron beam physical vapor deposition. Due to the rapid remelting and solidification, the outer layers of ceramic coatings become smooth and dense, and the protective performance for turbine blades is effectively improved. Because of the complex multi-layered structures in the coatings, a high-current pulsed electron beam treatment requires specific parameter inputs which are related to the temperature field induced by electron energy deposition in the coatings. In this paper, a two-dimensional temperature simulation was performed to demonstrate the melting depth and temperature evolution in ceramic coatings treated by high-current pulsed electron beam. Different energy densities and pulses were studied and discussed for obtaining optimized parameters.

  Info
Periodical
Materials Science Forum (Volumes 654-656)
Main Theme
Edited by
Jian-Feng Nie and Allan Morton
Pages
1807-1810
DOI
10.4028/www.scientific.net/MSF.654-656.1807
Citation
Y. Qin, W. Qu, X. X. Mei, S. Z. Hao, J. J. Zhao, W. Lu, C. Dong, "Numerical Simulation for Surface Modification of Thermal Barrier Coatings by High-Current Pulse Electron Beam", Materials Science Forum, Vols. 654-656, pp. 1807-1810, 2010
Online since
June 2010
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$32.00
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