В статье приводится анализ результатов по исследованию перспективного способа получения функционально-градиентных композиционных материалов на основе применения технологии «холодного» газодинамического напыления. частности, для композита Al–Al2O3определено влияние содержания керамического компонента изменение коэффициента термического линейного расширения. Результаты работы можно использовать при проектировании и создании в термически нагруженных узлах снижения напряжений за счет регулировки...

This Article Presents the Results of Development Multilayer Ceramic Coatings to Protect Metal Products from Corrosion in Aggressive Liquid Environments. is Based on Integrated Use Low-Temperature Heterophase Transfer and Microarc Oxidation Methods. Tests Interaction with Molten Lead Temperature Range 400-600°C are Presented. Structural Characteristics Considered.

The complexity of the operating conditions in oil fields requires development and use materials with unique properties. This paper presents study results for nickel-based coatings fabricated by cold gas spraying. In this study, compositions based on Ni, Ni-Cu, Ni-Zn, Ni-Al2O3/TiC applied to low-alloyed steel bases were investigated. Corrosion resistance was studied means electrochemical autoclave testing simulated oilfield conditions. Hydroabrasive using a bench. Scanning electron microscopy...

Reliability is one of the most important requirements for electric motor installations. Bearing assembly a common source failure motors. One main reasons such failures wear bearing seat end shield. This paper presents combined technology increasing durability bores shields made aluminum alloys. The technological concept that worn-out end-shield bore firstly restored by supersonic gas-dynamic spraying, and secondly, in order to improve anti-wear properties, it strengthened micro-arc...

Steam turbine blades in the process of operation are subjects on which high mechanical loads, erosion, corrosive and vibration effects. These factors significantly reduce their service life, forces to costly repair work. The application heat wear-resistant coating is a rational way increase life turbine.

The results of studying the intermetallic coating Ni–Ti system with addition tungsten carbide are presented. was synthesized on surface titanium alloy VT6 using an integrated approach – preliminary deposition a precursor from monometallic nickel by cold gas-dynamic spraying and subsequent laser processing. It is shown that introduction into matrix provides increase in hardness factor three or more, as well decrease wear intensity 80 compared to resistance alloy. A technology has been...

Abstract The article presents the results of a study Ni-Fe system coating on 09G2S (Fe-Mn9% Si2%) steel substrate obtained by laser surface treatment. was in two stages. At first stage, precursor (PC) Nickel applied cold spray (CS). second its shows changes composition and properties after treatment at different thicknesses modes. showed that structure can be controlled controlling thickness coating, scanning speed, hatch, number repeated scans.

A composition of a precision alloy based on the Ni–Cr–Mo system for wear and corrosion-resistant coatings by supersonic cold gas dynamic spraying has been developed. The optimum provides high level operational properties; its application is very promising protection structural functional elements marine equipment from aggressive environmental influence.

This paper presents the results of study nickel-based coatings fabricated by cold gas spraying. In this study, compositions based on Ni, Ni–Cu, Ni–Zn, and Ni–Al2O3/TiC applied to low-alloyed steel bases were investigated. The composition, type powder (mechanical mix or mechanically alloying), thickness varied choose optimal characteristics for recovery, repair procedures, specific applications in oil industry media. second phase was added Ni-based increase corrosion wear resistance. Pure...

The possibility is investigated in the article for porous micro-arc oxidation (MAO) coating's application to create ceramic-metal cover. It was shown that course of electro-chemical nickel deposition on MAO-coatings it possible form Using advantage both low-temperature hetero-phase transfer, oxidizing and functionallygradient coatings were formed metal surfaces which are promising being used contacts friction units machinery plants. Ill. 9. Ref. 12.

The paper presents experimental results on obtaining bulk samples of Ti‒Al‒SiC materials by the method cold gasdynamic spraying from a mixture monopowders in system separately operating dispensers, with subsequent heat treatment. Parameters allowing development effective methods for creating products additive have been studied and tested. It has shown practically theoretically that metal plastic particles composition prototype blank formed gas-dynamic can act as sacrificial component...

The article presents the results of research on development technology for production functional-gradient coatings with high levels adhesive strength and hardness, as well low porosity. coating was successfully tested recommended to protect elements components precision engineering.

The physical and chemical foundations of the technology cold gas-dynamic spraying coatings on titanium for two types charge are considered, in one which chemically inactive copper is used as a ductile metal combination with abrasive silicon carbide powder, other – active aluminum combined carbide. A thermodynamic modeling technique has been developed to select composition coating predict change its phase at high temperature.

The paper presents results of a comprehensive study on the development technology for production composite nanostructured functional coatings based Kh20N80 – chromium TiC system using supersonic cold gas dynamic spraying method. Composite coating powders are obtained by plating matrix powder made alloy followed application reinforcing nanoparticles. resulting has high level microhardness, modulus elasticity and resistance to wear. A distinctive feature is its reliable operation without...