Volume 34 Issue 8
Aug.  2008
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Wang Genlong, Xi Wenjun. Aging treatment of FeNiCr/NiAl-TiC composite coatings produced by thermit process[J]. Journal of Beijing University of Aeronautics and Astronautics, 2008, 34(8): 916-919. (in Chinese)
Citation: Wang Genlong, Xi Wenjun. Aging treatment of FeNiCr/NiAl-TiC composite coatings produced by thermit process[J]. Journal of Beijing University of Aeronautics and Astronautics, 2008, 34(8): 916-919. (in Chinese)

Aging treatment of FeNiCr/NiAl-TiC composite coatings produced by thermit process

  • Received Date: 30 Jul 2007
  • Publish Date: 31 Aug 2008
  • The FeNiCr/NiAl-TiC composite coatings were prepared by thermit reaction process in a carbon steel pipe. Using scanning electron microscope (SEM), transmission electron microscope (TEM), X-ray diffraction (XRD), and energy dispersive spectrum (EDS), the microstructure of the composite coatings and effects of aging treatment on the microstructure were investigated. Results show that the FeNiCr/NiAl-TiC composite coatings are composed of titanium carbide (TiC), intermetallic compound NiAl and ferrite (α-FeNiCr). The alloy matrix consists of NiAl and α-FeNiCr in which the grain size of the NiAl is about 100nm. After aging treatment, the phase constituent of the coatings doesn-t change. The shape and size of TiC particle are stable. The grain size of NiAl phase is about 400nm and it is coherent with the ferrite matrix.

     

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