Open AccessEFFECTIVENESS OF NANODISPERSED SUBSTANCES UTILIZATION IN SHIP’S MECHANISMS
Author(s) -
S.V. Kozytskyi,
S.V. Kiriian
Publication year - 2019
Publication title -
sudovye ènergetičeskie ustanovki
Language(s) - English
Resource type - Journals
ISSN - 1815-6770
DOI - 10.31653/smf39.2019.101-106
Subject(s) - materials science , ductility (earth science) , nanomaterials , toughness , nucleation , grain boundary , nanotechnology , nano , fracture toughness , composite material , creep , microstructure , chemistry , organic chemistry
The history of civilization is inseparably associated with the development of high-quality materials technology [1]. Modern materials science, aimed at the production of the materials with special properties, is connected with the fundamental and applied science of nanotechnology which studies the laws of physical and chemical nano-sized systems. Almost all nanosystems are obtained under the conditions far from equilibrium. It allows achieving spontaneous nucleation, and to avoid growth and aggregation of the formed nanoparticles. Studies have shown that nano-based materials have new and sometimes unusual properties [2]. It is known that for conventional materials the greater the strength of the material the less its ductility. In nanomaterials, a new paradox [3] of strength and ductility (a simultaneous increase in strength and ductility) has been discovered. In addition, nanomaterials have a higher fracture toughness and substantial wear resistance. The physical nature of the new phenomenon is connected with the change of micromechanisms of deformation, when, along with the motion of lattice dislocations at the boundary of formed nanograins, grain-boundary glide occurs [4]. Additives to operating media are widely used in mechanism’s systems. In particular, the reliability of friction units is determined in many respect with the presence of antiwear and boundary additives in lube oils. The transition from micron- to nano-sized additives is being widely implemented in technology at present. In this paper, we have analyzed the effectiveness of the utilization of nanodispersed substances and their compounds in order to increase the service life of the ship’s equipment.