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E.O. Paton Electric Welding Institute of the NAS of Ukraine
11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: firstname.lastname@example.org
Abstract The process of producing composite powders based on amorphizing Fe-alloy with the additives of refractory compounds by the
method of high-velocity oxy-fuel spraying was investigated. For spraying composite powders FeMoNiCrB‒(Ti, Cr)C, FeMoNiCrB‒
ZrB2 were used, produced from a mixture of powders of the compositions by mechanical alloying in a planetary mill.
As a result of spraying, dense coatings (porosity is less than 3 %) were produced, which were formed from partially deformed
particles with a multiphase structure and a uniform distribution of structural components. The results of X-ray diffraction
phase analysis indicate the formation of amorphous-crystalline structure in the produced composite coatings. On the X-ray
patterns, the maximum peak amplitude from the crystalline phase against the background of the amorphous halo corresponds
to the TiCN phase in the coating FeMoNiCrB‒(Ti, Cr)C and the ZrB2 phase in the FeMoNiCrB‒ZrB coating. The size of the
measured microhardness for the composite coating FeMoNiCrB‒(Ti, Cr)C amounts to — 5.5±0.25 GPa, and for the coating
FeMoNiCrB‒ZrB2 it is 5.9±0.29 GPa.
Keywords: high-velocity oxy-fuel spraying, amorphous phase, amorphous iron-based alloy, composite powder, composite
coating, microstructure, microhardness
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Yu.S. Borysov, N.V. Vihilianska, I.A. Demianov, A.P. Murashov, O.P. Gryshchenko Studies of coatings produced by high-velocity oxy-fuel spraying using cermet powder based on FeMoNiCrB amorphizing alloy The Paton Welding Journal №02 2022 p.33-36
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