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Canadian Metallurgical Quarterly
The Canadian Journal of Metallurgy and Materials Science
Volume 63, 2024 - Issue 1
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Materials Corrosion and Degradation

Highly corrosion and wear-resistant NiW–SiC–CeO2 composite coating

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Pages 105-118 | Received 10 Dec 2022, Accepted 26 Feb 2023, Published online: 13 Mar 2023
 

ABSTRACT

Crack-free and uniform NiW composite coatings filled with ceramic particles such as SiC and CeO2 were deposited on brass substrates by applying direct current (DC) and a well-designed pulse reverse current waveforms (PRC). PRC coatings displayed the noblest corrosion potential and lowest current density compared to DC electrodeposited coatings. Among all PRC coatings, PRC–NiW–SiC–CeO2 demonstrated the highest corrosion resistance and the lowest current density. It also seems that the addition of ceramic particles to the NiW matrix enhanced the wear resistance of the coatings and the lowest wear volume of about (14.119 × 103 µm3) and the friction coefficient of 0.25 was obtained due to the formation of the uniform, void-free and packed structures with high content of SiC and CeO2 particles in the deposit.

On a déposé sur des substrats en laiton des revêtements composites NiW sans fissures et uniformes remplis de particules céramiques telles que SiC et CeO2, en appliquant un courant continu (DC) et des formes d’onde bien conçues de courant inverse pulsé (PRC). Les revêtements PRC ont affiché le potentiel de corrosion le plus noble et la densité de courant la plus faible par rapport aux revêtements électrodéposés en courant continu. Parmi tous les revêtements PRC, PRC–NiW–SiC–CeO2 a démontré la plus haute résistance à la corrosion et la plus faible densité de courant. Il semble également que l’ajout de particules céramiques à la matrice de NiW a augmenté la résistance à l’usure des revêtements. Le plus petit volume d’usure d’environ (14.119 x 103 μm3) et le coefficient de frottement de 0.25 ont été obtenus en raison de la formation de structures uniformes, sans lacunes et compactes avec une teneur élevée en particules de SiC et CeO2 dans le dépôt.

Disclosure statement

No potential conflict of interest was reported by the author.

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