For the first time, experimental investigations of the resistance of a cermet coating formed by a combined method (cold gas-dynamical spraying with subsequent laser treatment) to high-speed impact was carried out. It is shown that as a result of laser interaction of TiAl–B4C with cold gas-dynamically deposited coating, boron carbide particles dissolve in the metal matrix, and secondary phase compounds of TiC and TiB2 are formed. Measurement of microhardness showed that created cold gas-dynamically deposited coating, involving B4C, Ti, and Al, has a microhardness of 466.3 HV0.3, while the microhardness of a coating after laser treatment is equal to 1331.3 HV0.1. Investigation of highspeed impact has shown the influence of formed coatings on the size of the crater in the substrate. It is also shown that the created cermet coating (cold gas-dynamical deposition + laser radiation) decreases the crater depth in the substrate by more than twice, with the crater width decreasing by 1.4 times compared with a sample without coating.
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Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 95, No. 7, pp. 1821–1827, November–December, 2022.
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Fomin, V.M., Golyshev, A.A., Malikov, A.G. et al. Experimental Investigation of the Effect of Laser Treatment on the Resistance of a Cermet Coating to a High-Speed Impact. J Eng Phys Thermophy 95, 1773–1779 (2022). https://doi.org/10.1007/s10891-022-02649-x
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DOI: https://doi.org/10.1007/s10891-022-02649-x