The Structure and Main Characteristics of Diamond-Bearing Ni–P Coatings

Abstract

The effect of detonation-synthesis nanodiamonds (extracted from detonation products by thermal treatment in air in the presence of boric anhydride) on the characteristics of chemical composite nickel–phosphorous coatings has been investigated. It has been established that the introduction of nanodiamonds results in formation of a finer structure of the obtained coatings, reduction in the size of the coherent-scattering region, and an increase in the size of the crystal-lattice parameter. The coatings’ microhardness increased by 30% on average. Application of nanodiamonds with a surface modified with nickel compounds has yielded an additional increment of the microhardness of composite coatings by 33%.