Tribological Properties of Coating Obtained by Magnetron Sputtering of the Composite Target Ni-Cr-B4C

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The paper studies the tribological behavior of a Ni-B/Cr7C3 nanocomposite coating applied by magnetron sputtering on a Ni-Cr-B4C composite target. The composite target was obtained by detonation gas-thermal spraying of Ni-Cr-B4C powder composition. The study determined the hardness of the coating amounting to 7.8 GPa. The distribution of chemical elements in the contact zone of ball-coating friction by energy dispersive spectroscopy (EDS) was studied. The wear track width was 324 μm. Tribological wear tests and determination of adhesion/cohesion strength showed that Ni-B/Cr7C3 coatings have good wear resistance, and abrasive and adhesion wear mechanisms act simultaneously during wear. The resulting coatings can be used to protect critical parts and mechanisms susceptible to abrasive and adhesive wear.

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139-145

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February 2022

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© 2022 Trans Tech Publications Ltd. All Rights Reserved

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