Metallographic studies and tests for abrasive wear resistance are performed for a Ni – Cr – B – Si coating obtained by laser powder cladding with the help of a multichannel (40 beams) CO2 laser. Efficiency of repeated laser recrystallization of the surface layers of the coating is demonstrated. This treatment can be used to form structures with different values of dendritic parameter and affects positively the wear resistance of the coating. The wear characteristics are shown to depend linearly on the dendritic parameter, which may be used as a criterion of wear resistance of coatings.
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The metallographic studies have been performed with the use of the equipment of the regional collective use center of the Tver State University.
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Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 9, pp. 55 – 60, September, 2019.
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Afanas’eva, L.E., Ratkevich, G.V. & Novoselova, M.V. Role of Structural Factor in Elevation of Wear Resistance of a Ni – Cr – B – Si Coating after Laser Treatment. Met Sci Heat Treat 61, 581–587 (2020). https://doi.org/10.1007/s11041-020-00465-9
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DOI: https://doi.org/10.1007/s11041-020-00465-9