

Synthesis and electron beam facing of TiB – TiC – titanium matrix hybrid composite powders
https://doi.org/10.22349/1994-6716-2018-95-3-89-101
Abstract
TiB – TiC – titanium matrix composite powders have been synthesized by self-propagating high temperature synthesis (SHS) in titanium, boron and carbon reactive powder mixtures. A target volume content of the titanium matrix (binder) in the powders was 50%. The SHS powders were cladded on VT1-0 titanium sheet by electron beam facing. A thickness of the cladded coatings varied from 1 to 3 mm depending on the pass number. A phase composition and a structure of the SHS powders and of the cladded coatings were invetigated be X-ray diffraction, optical and scanning electron microscopy. According to structure investigation and hardness profiles in the “coating – titanium base plate” transition zone an adhesion of the coating to the base is high. The hardness and abrasive wear resistance tests of the cladded coatings were carried out depending on the powder used for cladding. The maximum hardness increase of the coatings strengthened by titanium monoboride and titanium carbide inclusions is 2.2 times and abrasive wear resistance – 4.3 times as compared with VТ1-0 base. According to authors’ earlier results enhance hardness and abrasive wear resistant effects of titanium matrix by titanium carbide particles and titanium monoboride is near to the wear resistance of coatings deposited with SHS TiB + Ti powder, but ~5 times less than the wear resistance of coatings surfaced with SHS powder TiC + Ti.
Keywords
About the Authors
G. A. PribytkovRussian Federation
Dr Sc (Eng)
2/4, Pr. Akademichesky, Tomsk, 634055
V. V. Korzhova
Russian Federation
Cand Sc. (Eng)
2/4, Pr. Akademichesky, Tomsk, 634055
M. G. Krinitsyn
Russian Federation
2/4, Pr. Akademichesky, Tomsk, 634055
I. A. Firsina
Russian Federation
Cand Sc. (Eng)
2/4, Pr. Akademichesky, Tomsk, 634055
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Review
For citations:
Pribytkov G.A., Korzhova V.V., Krinitsyn M.G., Firsina I.A. Synthesis and electron beam facing of TiB – TiC – titanium matrix hybrid composite powders. Voprosy Materialovedeniya. 2018;(3(95)):89-101. (In Russ.) https://doi.org/10.22349/1994-6716-2018-95-3-89-101