Composition, Structure and Tribotechnical Properties of TiN, MoN Single-Layer and TiN/MoN Multilayer Coatings

Results of comprehensive investigations of nanostructed TiN and MoN single layer coatings as well as multilayer coatings consisting of TiN/MoN alternating layers have beenconsidered. The coatings have been deposited by a promising modern method of cathode-arc evaporation (vacuum-arc method). The elemental and phase compositions of coatings, their tribological and physico mechanical properties: friction coefficient, wear, adhesion, hardness, and elastic modulus have been studied and the mechanisms of the coatings fracture have been discussedyesBelgorod State Universit

Structure and properties of vacuum arc single-layer and multiperiod two-layer nitride coatings based on Ti(Al): Si layers

The paper provides an analysis of impact of deposition conditions on structural and phase state and thermal stability of vacuum arc coatings based on Ti(Al):Si layer

Measurements of light background at large depth in the ocean

The mean intensity of Cerenkov emission from the products of K(40) decay and bioluminescence was measured at depths to 5 km. The intensity of ocean light background is found to depend upon depth and at the 5 km level is equal on averaged to 300 + or - 60 quanta/sq cms into spatial angle of 2 pi sterradian in transparency window. The amplitudes, duration and number of BL flashes were measured at various depths. The intensive flashes due to BL are shown to be observed rather seldom at depths over 4 km

Effect of the Deposition Parameters on the Phase-Structure State, Hardness, and Tribological Characteristics of Mo2 N/CrN Vacuum - Arc Multilayer Coatings

A complex study has been performed of the effect of the technological parameters, which are responsible for the energy states of deposited particles, on the elemental, phase and structure compositions, hardness, and tribological characteristics of formed vacuum-arc multilayer Mo2N/CrN systems with a nanometric thickness. The formation of two phase and structure types has been defined in combined nitride layers: γ-Mo2N/CrN with the isostructural cubic crystalline lattices and γ-Mo2N/CrN with nonisostructural cubic and hexagonal lattice

The effect of magnetophoresis and Brownian diffusion on the levitation of bodies in a magnetic fluid

New aspects related to the redistribution of magnetic particles concentration in a magnetic fluid caused by magnetophoresis and Brownian diffusion in a nonuniform magnetic field are considered. These aspects deal with the influence of these processes on pressure redistribution and levitation of bodies in a magnetic fluid. It is shown that due to these processes the pressure force acting on bodies changes significantly with time and can be reduced dozens of percent if compared to a homogenous flui

Single layer and multilayer vacuum-arc coatings based on the nitride tialsiyn: composition, structure, properties

Using high-technological vacuum-arc evaporation in the atmosphere of nitrogen with ion bombardment, single- and multilayer coatings based on TiAlSiYN with high mechanical characteristics were obtained: hardness of the coatings reached 49.5 GPA, resistance to wear, with the value of the critical point LC5 reaching 184.92 N. The mechanisms of structure formation, defining the resulting mechanical characteristics of single- and multi-layer coatings based on TiAlSiYN nitride have been discusse

Tribotechnical properties of (TiZr)N/(TiSi)N multilayer coatings with nanometer thickness

The tribotechnical characteristics of (TiZr)N/(TiSi)N nitride multilayer coatings obtained by the meth-od of vacuum-arc deposition at room temperature were investigate

(TiZr)N/(TiSi)N Maitilayer nanostructured coatings obtained by vacuum arc deposition

The paper investigates the structure and properties of nanoscale multilayer coatings based on (TiZr)N and (TiSi)N produced by vacuum arc technique. Also, it provides an analysis of the impact of partial pressure of nitrogen on structural and phase state of coating

Structure and mechanical properties of multilayer coatings (TiAlCrY)N/ZrN

The development of new coatings for cutting tools as well as for the protection of machine parts operating in conditions of intense wear, elevated temperatures and in aggressive environments is an important task of modern materials scienc

Structure and physicomechanical properties of superhard multicomponent multilayer (TiAlСrY/Zr)/(TiAlСrYN/ZrN) coatings with double modulation period of the structure

The paper describes the acquisition, establishment of mechanisms and patterns of formation of the phase composition and structure of multilayer coatings of the (TiAlСrY)N/ZrN system with a single and of the (TiAlCrY/Zr)/(TiAlСrY)N/ZrN systems with a double modulation period by vacuum-arc depositio