THE STRUCTURE OF THE NANOCRYSTALLINE ELECTROCHEMICAL COMPOSITE COATINGS Ni-B AND THEIR TRIBOLOGICAL PROPERTIES

The structure and wear resistance was investigated for d.c. – plated Ni composite deposits prepared from a low – concentration Watts electrolyte, with and without additive agents and dispersive B particles. The dispersed phase and additives used in the bath were shown to affect the composition and structure of the electrodeposited composite layer. An increase in the content of B particles in the coating and in the size of [111] nickel crystallites led to increased roughness of Ni-B coatings. The microhardness of the deposited Ni-B layers increased as the size of [111] nickel crystallites decreased. The results suggest that as the effect of the organic compounds employed the nanostructure of the nickel matrix. The wear resistance of the Ni-B composite coatings is five times higher than of nickel coating. This work was supported by European Union – European Social Fund.

• Aleksander Nakonieczny
• Benigna Szeptycka
• Gajewska-Midziałek Anna

• Искусство. Декоративно-прикладное искусство. Фотография. Музыка. Игры. Спорт

• Технические науки. Промышленность
• Физико-математические науки
• Социальные (общественные) науки
• Естественные науки