Interaction between nitrogen plasma and tungsten

Tulenbergenov, Timur; Skakov, Маzhyn; Kolodeshnikov, Alexander A.; Zuev, V. A.; Rakhadilov, Bauyrzhan; Соколов, И. А.; Ganovichev, D. A.; Miniyazov, Arman; Bukina, Olga

doi:10.1016/j.nme.2017.07.005

Cited by 15 publications

(7 citation statements)

References 5 publications

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“…The sizes and volume fractions of the secondary phases, as well as the αand γ-phases were determined from images confirmed by microdiffraction patterns and dark-field images obtained in the reflections of the corresponding phases. The phases were identified according to standard procedures described in the following works [20][21][22]. Microdiffraction patterns were used for it which calculated from tabular values of the parameters of the crystal lattices.…”

Section: Methodsmentioning

confidence: 99%

Impact of Electronic Radiation on the Morphology of the Fine Structure of the Surface Layer of R6M5 Steel

et al. 2021

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In recent decades, great efforts have been made to significantly improve the performance characteristics of high-speed steel using various surface hardening techniques. Electron beam modification is engaging because it has an exceptionally high thermal efficiency and can significantly improve steels’ physical and mechanical properties. This work is devoted to researching the fine structure and changing the structural phase state of the surface layer of R6M5 high-speed steel after exposure to an electron beam. Electron beam treatment of steel R6M5 was carried out on a vacuum installation. The structure and phase composition of P6M5 steel samples were studied by transmission electron microscopy. Determined that after electron irradiation, the steel structure as in the initial state consists of martensite, carbides and residual austenite. After electron irradiation, an increase in the volume fraction of lamellar martensite is observed: the fraction of lamellar martensite in the initial state is 80%, and after irradiation, it is ~90% of the total fraction of α′-martensite. The action of the electron beam led to an increase in internal stresses in α′-martensite. Revealed, the value of the scalar dislocation density in R6M5 steel after exposure to an electron beam is higher than in the initial state. A cardinal difference in the state of the material after exposure to an electron beam is the presence of bending extinction contours in all M6C carbide particles.

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Section: Methodsmentioning

confidence: 99%

Impact of Electronic Radiation on the Morphology of the Fine Structure of the Surface Layer of R6M5 Steel

et al. 2021

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“…Research of the phase composition of samples were carried out by x-ray diffraction analysis using X'PertPro diffractometer using CuK α -radiation. For study the general nature of the structure was used an optical microscope «NEOPHOT-21» [6,7]. The tribological characteristics of the coatings were studied using a friction machine according to the scheme «ball-on disk» on the tribometer TRB3.…”

Section: Methodsmentioning

confidence: 99%

Influence of the detonation-spraying mode on the phase composition and properties of Ni-Cr coatings

Maulet¹,

Rakhadilov²,

Sagdoldina³

et al. 2020

Eurasian J. Phys. Funct. Mater.

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In work considers the results of studies of the phase composition and mechanical-tribological properties of Ni-Cr detonation coatings obtained at different values of the volume of filling the detonation barrel with an explosive acetylene-oxygen mixture. Analysis of the obtained experimental results indicates that the phase composition and properties of detonation coatings strongly depend on the technological parameters of spraying. When the barrel is filled with an explosive gas mixture of 40%, the coating is not dense enough, with noticeable boundaries between individual particles, which may be the result of insufficient heating and acceleration of the particles of the sprayed powder. It is determined that when the volume of filling the detonation barrel with an explosive mixture is up to 60%, there is a widening and a decrease in the intensity of the main peaks. Higher values of microhardness were obtained at 50% filling of the barrel. The results of tribological tests of coatings showed that the coating applied when filling the detonation barrel with an explosive mixture of up to 60% has a lower coefficient of friction than other coatings.

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“…The research phase composition of the samples was studied by x-ray diffractometer X'PertPro using CuK α -radiation [22,23]. The measurement of hardness and modulus of elasticity was determined by indenting on the nanohardometer "NanoScan-4D compact" in accordance with GOST R 8.748-2011 and ISO 14577.…”

Section: Phase Composition and Nanohardness Of Detonation Coatingsmentioning

confidence: 99%

Obtained of powder coatings by detonation spraying

Буйткенов¹,

Rakhadilov²,

Sagdoldina³

et al. 2020

Eurasian J. Phys. Funct. Mater.

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In this work, consider the aspects of obtaining powder coatings that possessing certain working properties obtained by detonation spraying. Experimental research were carried on the effect of technological parameters of the detonation spraying process on the phase composition and properties of Ti-Si-C coatings. It is determined that when the volume of filling the detonation barrel with an explosive mixture increases to 70% in the detonation wave flow, the Ti 3 SiC 2 powder partially decomposes into TiC consequently the high-speed shock interaction of heated to high temperatures. Installed that when filling the barrel with an explosive mixture of 50% and 60%, a low extent of decomposition of Ti 3 SiC 2 powder can be achieved. It is determined that an increase in the volume content of the TiC phase in the composition of coatings bring to a decrease in the hardness of the TiC -Si coating.

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Interaction between nitrogen plasma and tungsten

Cited by 15 publications

References 5 publications

Impact of Electronic Radiation on the Morphology of the Fine Structure of the Surface Layer of R6M5 Steel

Impact of Electronic Radiation on the Morphology of the Fine Structure of the Surface Layer of R6M5 Steel

Influence of the detonation-spraying mode on the phase composition and properties of Ni-Cr coatings

Obtained of powder coatings by detonation spraying

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