Structure and Properties of a Coating (TiCuN) – Substrate (А7) System Modified with a High-Intenisty Electron Beam

Abstract

The data obtained via an analysis of the structure and properties of a surface layer of technical grade aluminum (A7) modified by forming a thin TiCuN coating, followed by irradiation with a high-intensity submillisecond pulsed electron beam, are presented. The results of numerical modeling of the temperature fields and phase transformations in the surface layers of the coating (TiCuN)) and the substrate (А7), irradiated with a high-intensity pulsed electron beam, are also reported. The regimes of irradiation are identified, which ensure fusion of the coating into the substrate surface. An analysis of tribological properties (wear resistance and friction coefficient) of the TiCuN coating -А7substrate system is performed.

Modification of Hypereutectic Silumin by Ion-Electron-Plasma Method

“…Irradiation mode was 18 keV, the energy density of the electron beam was 40 J/cm 2 , the pulse repetition rate was 0.3 s -1 , the pulse duration was 200 ms and the number of pulses was 20. This mode has been chosen taking into account of thermal calculations, ensuring the remelting of all present phases [5][6][7]. The research of element and phase composition, defects of the modified surface structure was carried out by optical and scanning electron microscopy and X-ray diffraction analysis.…”

Экспериментальные исследования и моделирование импульсного электронно- пучкового воздействия на систему «ZrN-покрытие/подложка из силумина»

“…Одним из перспективных комбинированных методов, вызывающих интерес у научных исследователей, является нанесение покрытия с последующей электронно-пучковой обработкой системы «покрытие/подложка» [20][21][22]. Стоит отметить, что таким методом, в зависимости от вкладываемой плотности энергии, состава наносимого покрытия и используемой подложки, можно получать поверхностные сплавы разного состава толщиной ~0.1-100 мкм [21][22][23] или вплавлять однослойные твердые покрытия в более легкоплавкие подложки для получения высокоадгезионных слоев с повышенными свойствами [24,25].…”

Experimental Study and Mathematical Modeling of the Processes Occurring in ZrN Coating/Silumin Substrate Systems under Pulsed Electron Beam Irradiation

“…One of the most promising combined methods that are of interest to scientific researchers is coating deposition with subsequent electron beam treatment of the coating/substrate system [20][21][22]. It should be noted that this method, depending on the input energy density and the coating and substrate compositions, allows one to produce surface alloys of different compositions with the alloyed layer thickness from 0.1 to 100 µm [21][22][23] or to fuse single-layer hard coatings into lower melting point substrates to produce highly adhesive layers with enhanced properties [24,25].…”