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Inorganic Materials: Applied Research

, Volume 10, Issue 3, pp 582–588 | Cite as

Formation of the Structure via Electron Beam Cladding of Coatings by Titanium Carbide–Titanium Binder Powders

  • G. A. PribytkovEmail author
  • M. G. KrinitcynEmail author
  • V. V. KorzhovaEmail author
  • I. A. FirsinaEmail author
  • A. V. BaranovskiyEmail author
  • V. G. DurakovEmail author
FUNCTIONAL COATINGS AND SURFACE TREATMENT

Abstract

The structural evolution of “titanium carbide–titanium binder” metal matrix composite powders is investigated during the electron beam cladding of coatings by means of X-ray diffraction, optical, and scanning electron microscopy methods. As established, the morphology and dispersion of carbide inclusions in the deposited coating differ from those in the initial particles. According to X-ray diffraction data, coarse equiaxial carbide particles are primary carbides of the composite powder, which exhibit no changes during the cladding process. Another part of the carbide phase in the coating is represented by dispersed particles with elongated shape. The results reveal partial dissolution of composite powder granules in the melt of the cladding bath during the cladding, followed by crystallization of the dispersed carbide phase in the form of dendrites from a liquid metal solution with titanium and carbon.

Keywords:

self-propagating high-temperature synthesis metal matrix composites titanium carbide titanium cladding dissolution in a cladding bath microstructure 

Notes

ACKNOWLEDGMENTS

We are grateful to V.P. Krivopalov for help in producing powders and conducting wear resistance tests of coatings.

FUNDING

This work was supported by the Russian Science Foundation, project no. 17-19-01425.

CONFLICT OF INTERESTS

The authors declare that they have no conflict of interest.

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Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  1. 1.Institute of Strength Physics and Materials Science, Siberian Branch, Russian Academy of SciencesTomskRussia
  2. 2.National Research Tomsk Polytechnic UniversityTomskRussia

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