Paper Title:
Effects of Helium Implantation on the Mechanical Properties of 4H-SiC
  Abstract

The evolution of mechanical properties of helium-implanted 4H-SiC at room temperature has been mainly studied by nanoindentation tests. The curves of hardness and elastic modulus present a maximum at low levels of damage while a degradation of the mechanical properties is observed for high levels of damage. However, when the concentration of implanted ions exceeds 0.5 %, complex defects (helium-vacancy defects) become predominant which results in the increase of both the hardness and the modulus. Under high fluence of helium implantation tiny bubbles form and the amorphous transition is observed above a critical level of damage.

  Info
Periodical
Materials Science Forum (Volumes 645-648)
Edited by
Anton J. Bauer, Peter Friedrichs, Michael Krieger, Gerhard Pensl, Roland Rupp and Thomas Seyller
Pages
721-724
DOI
10.4028/www.scientific.net/MSF.645-648.721
Citation
J. F. Barbot, M. F. Beaufort, V. Audurier, "Effects of Helium Implantation on the Mechanical Properties of 4H-SiC", Materials Science Forum, Vols. 645-648, pp. 721-724, 2010
Online since
April 2010
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: Weilin Jiang, William J. Weber, C. Wang, Lu Min Wang, K. Sun
91
Authors: Y. Zhang, Fei Gao, Weilin Jiang, D.E. McCready, William J. Weber
Abstract:Single crystal 4H-SiC was irradiated with 2 MeV Au ions at 165 K. Ion-induced defect configurations and damage accumulation were studied by...
1341
Authors: Kyeon Hwan Park, Tatsuya Hinoki, Akira Kohyama
Abstract:Irradiation damage produced by neutrons or energetic particles lead to changes of physical- and mechanical-properties of SiC. Radiation...
489
Authors: Ji Yeon Park, Seok Min Kang, Weon Ju Kim, Akira Kohyama
Abstract:To estimate the ion-irradiation effect on various types of SiCf/SiC composites, a silicon self-ion irradiation was performed at temperatures...
257
Authors: Cornelia Heintze, Frank Bergner, Reinhard Kögler, Rainer Lindau
Abstract:The influence of helium on the mechanical properties of reduced-activation ferritic/martensitic Cr-steels under fusion-relevant irradiation...
124