Paper Title:
Kinetics of Interfacial Reaction in SiCf/Ti6Al4V Composites
  Abstract

The Ti6Al4V composites reinforced with Chinese SiC fiber was manufactured and then thermally exposed at 800°C, 900°C and 1000°C, respectively, for up to 500h. The interfacial reaction products were identified as TiC between Ti6Al4V and the C-coating of the SiC fiber. However, if the SiC fiber has no C-coating, the interfacial reaction forms TiC, Ti3SiC2, Ti5Si3(Cx) and Ti3Si(Cx). The thickness of the interfacial reaction zone was measured and it is found that the thickening rate is slower in the samples in which the SiC fiber has the C-coating. The growth of the interfacial reaction products is diffusion-controlled and the parameters of the growth kinetics, k0 and Q, were determined, respectively. The profile of the element distribution was calculated according to the diffusion theory and is well consistent with the expeimental data.

  Info
Periodical
Materials Science Forum (Volumes 546-549)
Edited by
Yafang Han et al.
Pages
1627-1632
DOI
10.4028/www.scientific.net/MSF.546-549.1627
Citation
Y. Q. Yang, X.H. Lu, X. Luo, Z.J. Ma, J.K. Li, Q. Wen, Y. Chen, "Kinetics of Interfacial Reaction in SiCf/Ti6Al4V Composites", Materials Science Forum, Vols. 546-549, pp. 1627-1632, 2007
Online since
May 2007
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$32.00
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