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Academic literature on the topic 'Сплав тернарний'
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Dissertations / Theses on the topic "Сплав тернарний"
Сачанова, Юлія Іванівна, Микола Дмитрович Сахненко, Марина Віталіївна Ведь, and І. Ю. Єрмоленко. "Параметри електролізу як фактор керування складом покриттів Fе-Cо-Mо." Thesis, Національний технічний університет "Харківський політехнічний інститут", 2016. http://repository.kpi.kharkov.ua/handle/KhPI-Press/48772.
Full textЛагдан, Інна Володимирівна, Микола Дмитрович Сахненко, Марина Віталіївна Ведь, and Ірина Юріївна Єрмоленко. "Електролітичні покриття сплавом залізо-кобальт-вольфрам." Thesis, Національний технічний університет "Харківський політехнічний інститут", 2017. http://repository.kpi.kharkov.ua/handle/KhPI-Press/41690.
Full textЛагдан, Інна Володимирівна, Микола Дмитрович Сахненко, Марина Віталіївна Ведь, and Ірина Юріївна Єрмоленко. "Електролітичні покриття сплавом залізо-кобальт-вольфрам." Thesis, Національний технічний університет України "Київський політехнічний інститут", 2016. http://repository.kpi.kharkov.ua/handle/KhPI-Press/34636.
Full textГапон, Юліана Костянтинівна. "Функціональні покриття тернарними сплавами кобальту з тугоплавкими металами." Thesis, НТУ "ХПІ", 2017. http://repository.kpi.kharkov.ua/handle/KhPI-Press/27602.
Full textThesis for the Degree of Candidate of Technical sciences in specialty 05.17.03 – Technical Electrochemistry. – National Technical University "Kharkiv Polytechnic Institute", Kharkiv, 2017. The thesis is devoted to development of technologies for galvanic coatings synthesis of the ternary alloys cobalt-molybdenum-tungsten from poly-ligand electrolytes to produce materials with improved physical and mechanical properties. The constant instability and composition of mono- and bi-ligand complexes of cobalt are determined, and both citrate-diphosphate and ammonia-citrate systems suggested for the deposition of cobalt alloys with tungsten and molybdenum. The mechanism of alloy deposition is defined based on kinetic patterns analysis. Metals recovered by stages from hetero-nuclear complexes of composition [MO₄Со(P₂O₇)]⁴⁻ and mononuclear Со(Cit)₂⁴⁻ (where M = Mo, W) when deposited from citrate-diphosphate bath. Conjugate deposition of metals in alloy from ammonia-citrate electrolyte occurred from complexes [MO₄Со(Cit)]³⁻. The effect of electrolytes composition and deposition modes (stationary and pulse) on the components content, morphology, structure and functional properties of alloys as well as process efficiency are substantiated. A technological scheme for functional electrolytic cobalt alloy coatings deposition with molybdenum and tungsten is offered and relevant technological instructions are developed. It was established high corrosion resistance coatings, synergic growth of microhardness and catalytic activity compared with alloying components.
Гапон, Юліана Костянтинівна. "Функціональні покриття тернарними сплавами кобальту з тугоплавкими металами." Thesis, НТУ "ХПІ", 2017. http://repository.kpi.kharkov.ua/handle/KhPI-Press/27601.
Full textThesis for the Degree of Candidate of Technical sciences in specialty 05.17.03 – Technical Electrochemistry. – National Technical University "Kharkiv Polytechnic Institute", Kharkiv, 2017. The thesis is devoted to development of technologies for galvanic coatings synthesis of the ternary alloys cobalt-molybdenum-tungsten from poly-ligand electrolytes to produce materials with improved physical and mechanical properties. The constant instability and composition of mono- and bi-ligand complexes of cobalt are determined, and both citrate-diphosphate and ammonia-citrate systems suggested for the deposition of cobalt alloys with tungsten and molybdenum. The mechanism of alloy deposition is defined based on kinetic patterns analysis. Metals recovered by stages from hetero-nuclear complexes of composition [MO₄Со(P₂O₇)]⁴⁻ and mononuclear Со(Cit)₂⁴⁻ (where M = Mo, W) when deposited from citrate-diphosphate bath. Conjugate deposition of metals in alloy from ammonia-citrate electrolyte occurred from complexes [MO₄Со(Cit)]³⁻. The effect of electrolytes composition and deposition modes (stationary and pulse) on the components content, morphology, structure and functional properties of alloys as well as process efficiency are substantiated. A technological scheme for functional electrolytic cobalt alloy coatings deposition with molybdenum and tungsten is offered and relevant technological instructions are developed. It was established high corrosion resistance coatings, synergic growth of microhardness and catalytic activity compared with alloying components.
Єрмоленко, Ірина Юріївна, Марина Віталіївна Ведь, and Микола Дмитрович Сахненко. "Морфологія і магнітні характеристики покриттів тернарними сплавами заліза і кобальту з молібденом і вольфрамом." Thesis, Національний університет харчових технологій, 2016. http://repository.kpi.kharkov.ua/handle/KhPI-Press/34625.
Full textЄрмоленко, Ірина Юріївна. "Наукові основи електрохімічної технології покриттів тернарними сплавами заліза з тугоплавкими металами." Thesis, НТУ "ХПІ", 2018. http://repository.kpi.kharkov.ua/handle/KhPI-Press/37459.
Full textDissertation for the Degree of the Doctor of Engineering Sciences in the Specialty of 05.17.03 – Technical Electrochemistry. – National Technical University "Kharkіv Polytechnic Institute", Kharkіv, 2018. This doctoral thesis is devoted to the development of scientific basics for electrochemical technologies used for the application of coatings consisting of ternary iron and cobalt alloys combined with molybdenum and tungsten of improved functionality. The hypothesis as for the competitive reduction of iron ternary metals with refractory components preconditioned by the mutual interaction of thermal-&-dynamic and crystal-&-chemical characteristics of the alloy-forming metals and the kinetic parameters of cathode process and it was proved experimentally. The kinetic regularities of the co-reduction in Fe³⁺ ‒ MoO₄²⁻ ‒ WO₄²⁻ ‒ Cit³⁻, Fe³⁺ ‒ Со²+ ‒ WO₄²⁻ (MoO₄²⁻) ‒ Cit³⁻ systems have been defined and the mechanism of deposition of ternary Fe-Mo-W, Fe-Co-W (Mo) alloys has been substantiated. The influence of composition of electrolytes and modes of electrolysis on elemental, phase composition and surface morphology of the obtained coatings has been deter-mined. The possibility of controlling the composition and morphology of multicomponent coatings on the basis of iron and cobalt by varying the composition of the electrolyte (the ratio of component concentrations, the ratio of ligand and complexing agent), and by used of galvanostatic and pulsed electrolysis regimes with a ranging of current density 2.5 ‒ 6.5 A/dm², and durations pulse/pause 5 ‒ 10 / 5 ‒ 20 ms, has been proved. The electrolytes and the deposition modes were developed that provide the deposition of Fe-Co-W coatings with the Co content of 32 to 47 аt. %, and W of 5 to 13 аt. %, and Fe-Mo-W coatings with the tungsten content of 5 to 11 at. %, and the molybdenum contents of 26 to 32 at. %, and the Fe-Сo-Мо coatings with the Co content ranging from 26 to 48 at. %, and Mo content ranging from 15 to 31 at. %, and the current efficiency ranging from 58 to 82 %. The variation schemes of electrochemical processes were suggested and these allow for the deposition of Fe-Mo-W and Fe-Co-W(Мо) coatings depending on their practical application. The perspective directions of the application of the obtained materials according to the results of experimental researches and tests of functional properties in model environments and technological conditions are determined.
Єрмоленко, Ірина Юріївна. "Наукові основи електрохімічної технології покриттів тернарними сплавами заліза з тугоплавкими металами." Thesis, НТУ "ХПІ", 2018. http://repository.kpi.kharkov.ua/handle/KhPI-Press/37455.
Full textDissertation for the Degree of the Doctor of Engineering Sciences in the Specialty of 05.17.03 – Technical Electrochemistry. – National Technical University "Kharkіv Polytechnic Institute", Kharkіv, 2018. This doctoral thesis is devoted to the development of scientific basics for electrochemical technologies used for the application of coatings consisting of ternary iron and cobalt alloys combined with molybdenum and tungsten of improved functionality. The hypothesis as for the competitive reduction of iron ternary metals with refractory components preconditioned by the mutual interaction of thermal-&-dynamic and crystal-&-chemical characteristics of the alloy-forming metals and the kinetic parameters of cathode process and it was proved experimentally. The kinetic regularities of the co-reduction in Fe³⁺ ‒ MoO₄²⁻ ‒ WO₄²⁻ ‒ Cit³⁻, Fe³⁺ ‒ Со²+ ‒ WO₄²⁻ (MoO₄²⁻) ‒ Cit³⁻ systems have been defined and the mechanism of deposition of ternary Fe-Mo-W, Fe-Co-W (Mo) alloys has been substantiated. The influence of composition of electrolytes and modes of electrolysis on elemental, phase composition and surface morphology of the obtained coatings has been deter-mined. The possibility of controlling the composition and morphology of multicomponent coatings on the basis of iron and cobalt by varying the composition of the electrolyte (the ratio of component concentrations, the ratio of ligand and complexing agent), and by used of galvanostatic and pulsed electrolysis regimes with a ranging of current density 2.5 ‒ 6.5 A/dm², and durations pulse/pause 5 ‒ 10 / 5 ‒ 20 ms, has been proved. The electrolytes and the deposition modes were developed that provide the deposition of Fe-Co-W coatings with the Co content of 32 to 47 аt. %, and W of 5 to 13 аt. %, and Fe-Mo-W coatings with the tungsten content of 5 to 11 at. %, and the molybdenum contents of 26 to 32 at. %, and the Fe-Сo-Мо coatings with the Co content ranging from 26 to 48 at. %, and Mo content ranging from 15 to 31 at. %, and the current efficiency ranging from 58 to 82 %. The variation schemes of electrochemical processes were suggested and these allow for the deposition of Fe-Mo-W and Fe-Co-W(Мо) coatings depending on their practical application. The perspective directions of the application of the obtained materials according to the results of experimental researches and tests of functional properties in model environments and technological conditions are determined.