Investigation of a wear-and corrosion-resistant coating of the TiCN−Ni-alloy system, obtained by high-speed gas-flame spraying

Podchernyaeva, I. A.; Kisel, V. M.; Evdokimenko, Yu. I.; Lavrenko, V. A.; Pasichnyi, V. V.

doi:10.1007/bf02676169

Cited by 6 publications

(2 citation statements)

References 3 publications

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Section: Introductionmentioning

confidence: 99%

“…Gas-thermal TiC-based cermet coatings are promising and can compete with WC-Co, since they operate at higher temperatures, have a higher hardness, and dissolve less in the matrix phase during plasma spraying [1][2][3][4][5][6][7]. Despite this, there are not many publications on these cermet coatings [2][3][4][5][6][7]. A much larger number of publications are devoted to bulk cermets fabricated by liquid-phase sintering at temperatures of 1300-1500°C [8][9][10][11][12][13][14][15][16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

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TiC–Cr3C2–WC–NiCr–Mo–C Cermet Plasma Coatings

Калита

Radyuk

Комлев

et al. 2021

Inorg. Mater. Appl. Res.

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Two bulk cermets TiC-WC-Cr 3 C 2 -(Ni80Cr20)-Mo-2.8C after liquid-phase sintering at 1400°C for 1 h were used to manufacture powders for plasma spraying of coatings. The cermets were fabricated at a limited time of mechanical alloying at the mixing stage. Plasma coatings were sprayed on a setup with a nozzle attached to a plasmatron for local protection of the sprayed particles from the air atmosphere. The WC-Cr 3 C 2 -C content in the cermets provided compensation for carbon losses at all stages of coating production and the formation of an annular zone, the volume of which determines the increase in the TiC content in the coatings by 20% and the formation of additional carbides in the matrix. The microhardness of cermet at an initial carbide content of 60% was 15.26-16.83 GPa with a load on the indenter of 200 G and 20.91-24.68 GPa with a load on the indenter of 20 G, and the difference was explained by a scale factor. The contribution of the microhardness of carbides to the microhardness of cermet with an initial carbide content of 60% was estimated according to the rule of mixtures, proceeding from their volume fraction and microhardness of cermet under a load on the indenter of 20 G. In the initial powder for spraying, this contribution is high, 33.19 GPa, close to the hardness of TiC. The contribution of microhardness of carbides in the coating is lower, 28.09 GPa.

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