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0215U001432,
0111U007673
,
Material science and design-engineering development of advanced nuclear and neutron absorbing materials, core elements on their basis and validation of their reliability, integrity and safety
Krasnorutskyy Volodymyr Semenovich,
02-03-2015
National Science Center "Kharkov Institute of Physics & Technology" National Academy of Science, Ukraine
At this stage, the results of informational analysis on the mechanisms of zirconium alloys corrosion are given. The structure of forming oxide on different oxidation stages is presented. The results of long-term corrosion testing of zirconium alloys operational E110 and Ukrainian pilot KTC-110 and hafnium brand GFE-1in medium that corresponds in composition and parameters to the primary coolant of WWER-1000 reactors on power operation. These materials were also tested in a high temperature water steam at atmospheric pressure. Detailed studies of corrosion kinetics of these materials were continued. The phenomenon of kinetic "transition" that appears as breakaway on the curve on the graph dependence of weight gain or the oxide film thickness on time, and its effect on corrosion resistance were considered. Emphasis is placed on the fact that during long exposure times oxide films on zirconium alloys are multilayered and each layer corresponds to a certain stage of oxidation. Analytical results of experimental data on the corrosion kinetics of zirconium alloys and hafnium indicate that the corrosion resistance of hafnium is higher than zirconium. An attempt was made to explain the corrosion mechanism of zirconium alloys and hafnium in high-temperature aqueous medium at high pressures. The suggestion, based on literature data and experimental results, is that the surface layer of metal, saturated with oxygen, makes the main contribution to the limitation of oxygen diffusion into the metal. Also, corrosion kinetics of zirconium alloys in aqueous environments with the addition of zinc or aluminum were compared. It was shown that these additives do not adversely affect the corrosion resistance of zirconium alloys.
Іщенко Надія Іванівна
Антонова Ганна Іллівна
Бєлаш Микола Миколайович
Висоцький Володимир Олександрович
Ворожко Володимир Васильович
Грицина Віктор Михайлович
Гулько Володимир Миколайович
Дикий Іван Валерійович
Долгий Валерій Анатолійович
Зігунов Володимир Володимирович
Зуйок Валерій Анатолійович
Клименко Сергій Петрович
Колотілов Олександр Миколайович
Корнєєва Віра Василівна
Красноруцький Володимир Семенович
Кривошея Сергій Олексійович
Куштим Яна Олексіївна
Лаврентьєв Микола Олександрович
Матющенко Роман Вікторович
Мухін Михайло Вікторович
Остапов Артем Валерійович
Пасенов Феодор Андрійович
Петельгузов Іван Антонович
Пузік Володимир Олексійович
Пушкін Сергій Владленович
Рєдкіна Ганна Петрівна
Рудь Роман Олександрович
Свириденко Сергій Петрович
Слабоспицька Олена Олександрівна
Степаненко Олександр Михайлович
Татарінов Володимир Романович
Трет'яков Михайло Віталійович
Федченко Ігор Вікторович
Черняєва Тетяна Павлівна
Чуносов Віталій Олександрович
2020-04-02
Updated: 2025-12-05
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