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Item type: Item , Structural-Phase Transformations in the Diffusion Zone Nitrooxidiation of Alloy Steels(AIP Conference Proceedings, 2025-06-17) Eshkabilov, Kholikul KarshiyevichAbstract. Increasing the corrosion resistance and wear resistance of cutting tools used under conditions of dynamic wear and shock loads requires the formation on their surface of a high-strength diffusion zone with damping properties. In the process of oxidation of the nitrided layer, the creation of a barrier oxide film on its surface due to the dissociation of high nitrogen nitrides deep into the matrix, as a result of which structural and phase changes occur in the diffusion zone. In the process of oxidation of the nitrided layer, the creation of a barrier oxide film on its surface due to the dissociation of highnitrogen nitrides deep into the matrix, as a result of which structural and phase changes occur in the diffusion zone. The process of resorption of the nitride layer at the nitride-matrix interface due to volumetric and reaction diffusion is accompanied by the formation of a transition zone with intermediate low-nitrogen nitrides and an increase in the diffusion zone in the matrix. As a result of phase changes in the transition zone with low-nitrogen nitrides with the achievement of the maximum concentration of nitrogen solubility at the “nitride-matrix” boundary, stable and metastable phases of solid solutions, both base metal and alloying elements, are released in the diffusion zone. Corrosion tests and determination of the surface gradient properties of the composite layer have proposed compositions for surface hardening of cutting tools, consisting of combined layers “oxide-nitride-diffusion zone”, providing a double damping effect of the high-strength diffusion zone.Item type: Item , Aromatization patterns of hexane in high silicon zeolite(E3S Web of Conferences, 2024-05-16) Rаhmatov, Khudoyor; Fayzullaev, Normurot; Buronov, Firdavsiy; Matmuratov, Shavkat; Takhirov, Yuldash; Rifky, Mohamed; Dissanayake, Kasun; Samadiy, MurodjonIn this article, methods of preparation of catalysts in analogues of in high-silica zeolite, conversion of n-hexane in the catalysts keeping in high-silica zeolite, of n-hexane to aromatic hydrocarbons, n-hexane to aromatic hydrocarbons in catalysts with high catalytic activity and selectivity modified with copper, 2%Cu*8%Zn/Н-High silica zeolite-40 conversion of n-hexane to aromatic hydrocarbons in the composition, activity in chain branching and aromatization processes to obtain high-octane components of fuels 2%Cu*8%Zn/Н- High silica zeolite-40 high silicon, A mesoporous aluminosilicate catalyst with high catalytic activity and selectivity was studied for the catalytic Aromatization of nhexane to aromatic hydrocarbons. H-High silica zeolite-40 and 2%Cu*8 %Zn/H-High silica zeolite-40 catalysts with high catalytic activity and selectivity selected for catalytic Aromatization of n-hexane to aromatic hydrocarbons, Aromatization, chain branching and carbon-carbon by hydrogen action activity in the process of breaking the bond was studied.Item type: Item , Increasing the Efficiency of Heat Exchanging by Improving the Design of Heat Exchanger Devices3304, 030059 (2025)(AIP Conference Proceedings, 2025-07-21) Buronov, Firdavsiy; Abdugaffor, Khurmamatov; Rakhimov, Ganisher; Murtazayev, FeruzbekOil and natural gas are crucial global resources, serving as the primary sources of energy and fuel production. The products derived from these resources are integral to various sectors, including industry, agriculture, transportation, and daily life. They significantly influence the economic strength and technological capabilities of nations. Advancements in oil and gas processing technology are essential for producing high-quality products that adhere to international standards. A key area for improvement is the design of heat exchangers used in natural gas processing. Enhancing the design of these heat exchangers and optimizing the hydrodynamic conditions of raw material flow can extend maintenance intervals and boost economic efficiency. One effective strategy for improving heat exchange efficiency involves enhancing the distribution of raw materials within the distribution chamber. This can be achieved by incorporating a fixed structural element that generates centrifugal forces at the inlet fitting of the shell-and-tube heat exchanger. This modification promotes a more uniform distribution of materials through the exchanger pipes, thereby improving the overall heat exchange process.Item type: Item , Kinetics and Mechanism of Vapor Phase Vinyl Acetate Synthesis Reaction from Ethylene(AIP Conference Proceedings, 2025-07-21) Burоnоv, FirdavsiyActive and selective synthesis of vinyl acetate from ethylene was selected for the process of oxidative acetylation of ethylene with ethanoic acid in the presence of air oxygen, the substance that increases the speed of the chemical reaction was selected for the purpose of the development of the substance that increases the rate of the chemical reaction, and in order to control the catalytic properties of the included components, it was selected for the process of oxidative acetylation of ethylene with ethanoic acid in the presence of air oxygen, the rate of the chemical reaction the effect of the amount and ratio of individual components of the enhancer was studied.Item type: Item , NEFT VA GAZ QUDUQLARINI BURG‘ILASH ISHLARIDA QO‘LLANILADIGAN QORISHMALARNING TERMIK BARQARORLIGINI TADQIQ ETISH("Innovatsion texnologiyalar" ilmiy-texnik jurnali, , 2024,, 2024-12) Murtazayev, Abdijabar Mustafayevich; Haydarov, Islom Qosimovich; Samadov, Aziz Xasanovich; Murtazayev, Abdijabar MustafayevichMaqolada neft va gaz quduqlarini burg‘ilash suyuqligining reologiyasi tahlil qilingan bo‘lib, burg’ilash eritmasining xossalari, vazifasi va burg’ilash tezligiga ta’siri o’rganilgan. Quduq tanasida eritmaning bukishini oldini oluvchi va o’pirilishga qarshi kurasha oladigan burg’ilash eritmasining tarkibini ishlab chiqish, import reagentlar o’rnini bosuvchi modifikatsiyalangan karboksimetil kraxmal polimer kompozitlari asosidagi burgʼilash qorishmalarni yangi tarkiblarni yaratish va qo’llash tartiblari bo’yicha tadqiqotlar olib borildi. Reagent bo’yicha tadqiqot natijalari, xulosalar va takliflar keltirilgan.