Рахадилов Бауыржан Корабаевич


Degree: степень не известна

Position: начальник группы

Phone: No phone

Email: rakhadilov@nnc.kz

Count articles: 7

Author articles


The change in the structural-phase state and microhardness of the 67CoNi5Nb alloy while ion and electron beams processing

Authors: Скаков Мажын Канапинович, Рахадилов Бауыржан Корабаевич, Зарва Денис Борисович, Гулькин Александр Владимирович

Keywords: ионная имплантация, электронно-лучевая обработка, микротвердость, сплав

Organisation: РГП «Национальный ядерный центр Республики Казахстан»

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The article shows the influence of ion implantation of nitrogen and electron-beam processing on structural-phase state and microhardness of a dispersion-hardening 67CoNi5Nb alloy. It is established that at the surface treatment of electronic and ion beams is the place to morphological changes, and changes in the elemental composition of the 67CoNi5Nb alloy. It is determined that in the result of treatment by nitrogen ions and electrons on the surface of a dispersion-hardening 67CoNi5Nb alloy formed fine inclusion due to surface segregation of niobium. It is shown that the
ion implantation leads to an increase in the microhardness to 10–50%, depending from dose of irradiation. It is determined that the surface microhardness of the 67CoNi5Nb alloy after electron irradiation increases almost to 2 times.

Structure and surface morphology of R6M5 steel after electrolyte-plasma treatment

Authors: Скаков Мажын Канапинович, Зарва Денис Борисович, Гулькин Александр Владимирович, Рахадилов Бауыржан Корабаевич

Keywords: сталь, азотирование

Organisation: Восточно-Казахстанский государственный технический университет им. Д. Серикбаева

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In article influence of nitriding on the structure and morphology of R6M5 high-speed steel by electrolytic-plasma treatment was study. It is shown that after nitriding by electrolytic-plasma treatment on the R6M5 steel surface formation of small pores, microdefects and fine inclusion. It is found experimentally that R6M5 steel surface after electrolytic-plasma nitriding at 550°C temperature formed diffusion strengthened layer with Fe4N-monophasic nitride (γ’-phase). The content of nitrogen on structural components after nitriding was determined. It is revealed that modified surface differs by having greater magnitude of the surface imperfection.

Study of structural-phase ceramic exchange after firing

Authors: Кантай Н., Плотников С.В., Рахадилов Бауыржан Корабаевич, Кантай Н., Касмамытов Н.К.

Keywords: керамика

Organisation: Восточно-Казахстанский Государственный университет им. С. Аманжолова

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Based on this article, high-voltage porcelain ceramics was prepared as local raw materials. According to state standard (GOST 7025-91), density, water absorption, and volume shrinkage were determined. A structural analysis was carried out using a scanning electron microscope, and an X-ray phase analysis was carried out on an Xpert PRO diffractometer. It was found, that in the initial state, ceramics consist of hexagonal (SiO2) and in a small amount of monoclinic phase, above a temperature of 1150 °С it consists of hexagonal (SiO2), an orthorhombic lattice, and also contains mullite (Al2Si2O13).

Thermal resistant coating obtained from zirconium and aluminum oxides by detonation method

Authors: Плотников С.В., Кантай Н., Рахадилов Бауыржан Корабаевич, Абилев М., Пашковский М.

Keywords: микротвердость, 12Х18Н10Т, детонационный метод

Organisation: Восточно-Казахстанский Государственный университет им. С. Аманжолова

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The aim of this work was to study coatings deposited by the detonation method on the surface of stainless steel 12X18H10T. CCDS detonation complex, Xpert Pro X-ray analysis (U = 40 kV, I = 30 mA CuKα), Phenom ProX scanning electron microscope (SEM) and DuraScan-20 microstructure detection methods were used. The surface of the steel was covered by Al2O3 and ZrO2 powders in 500 and 1100 μm thick. The thickness of the coating was measured and the elemental analysis was performed. Based on literary reviews and research, it was found that the covering of the metal with different coatings increases the physico-mechanical and tribological properties.

Modification of TiN coatings by electron irradiation

Authors: Журерова Л., Рахадилов Бауыржан Корабаевич, Кенесбеков А.Б., Кожанова Р.

Keywords: облучение, микротвердость, TiN

Organisation: Восточно-Казахстанский Государственный университет им. С. Аманжолова

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This work presents the experimental results of structural and phase changes research study in TiN coatings under thermal and electron irradiation. Continuous electron irradiation of coated samples was performed on the ELV-4 accelerator. It was determined that electron irradiation with an electron energy of 1.3 MeV and an integral irradiation dose of 0.52·1019 e − /cm2 leads to an increase in the microhardness of TiN coatings by 20%. It has been established that the main factor in increasing the microhardness of the coating after electron irradiation in the above regimes is the formation of new phases, in particular the intermetallide of Co2Ti.

Structural transformation in the steel 20GL after electrolyte plasma surface hardening

Authors: Рахадилов Бауыржан Корабаевич, Байжан Д.Р., Кенесбеков А.Б., Сагдолдина Ж.Б.

Keywords: сталь 20ГЛ, электролитно-плазменная поверхностная закалка

Organisation: Восточно-Казахстанский Государственный университет им. С. Аманжолова

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The present work is devoted to the investigation of the effect of the electrolyte-plasma surface hardening process on the structure and properties of 20GL steel used for the preparation of railroad products (the supertor bar and the side frame). The electrolyte-plasma surface hardening process was carried out in an electrolyte from an aqueous solution of 20% sodium carbonate in the following mode: the applied voltage between the anode and the sample when heated to a quenching temperature of 320 V, the heating time by electrolytic-plasma exposure of 2 s and 3 s, ~ 850 °С. The results of a study of the structure of the sample showed the lines of the α-phase and the weak reflexes of cementite and oxide. The thickness of the modified layer was 500–550 μm. The results of the study of the mechanical properties of the sample showed a slight increase in the microhardness, but a significant increase in wear resistance of the 20GL steel sample after treatment.

Effect of electron beam treatment on the wear resistance of polymers

Authors: Рахадилов Бауыржан Корабаевич, Буйткенов Д.Б., Акатан К.

Keywords: электронно-лучевая обработка, полимеры

Organisation: Восточно-Казахстанский Государственный университет им. С. Аманжолова

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This work is related to the study of the effect of electron-beam processing on the physical and mechanical properties of polymer materials (PEI and PET). After electron-beam processing with a beam current of 30 mA and an energy of 1.2 keV, the microhardness of the polymers increased by a factor of 1.5 compared to the initial state. PET polymer samples show a decrease in wear rate of up to 30%, and resistance to abrasion of the polymer increased by 1.3 times compared to the original sample. The results of the conducted studies have shown the prospects of using electron irradiation for increasing the operational characteristics of polymer materials.