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0421U103576,
Кандидат технічних наук
20-09-2021
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Improving the tribotechnical properties of piston rings by multilayer hardening with nanostructured coating
Maltsev Taras Vitaliiovych,
popup.head Skoblo Tamara S.
popup.opponent Aulin Viktor Vasylovych
popup.opponent Tsymbal Bohdan Mykhailovich
Дисертація присвячена вивченню впливу технології зміцнення маслоз'ємних поршневих кілець двигунів спеціальної техніки багатошаровими іонно-плазмовими наноструктурними покриттями TiN/CrN, а також вибору та аналізу оптимального співвідношення Ti/Cr. Виявлено зниження їх зношування при різних швидкостях ковзання. Виконано оцінку зміни їх мікротвердості до і після випробувань. Запропонований та використаний спосіб оцінки і контролю ступеня неоднорідності напружено-деформованого стану поршневих кілець до і після зміцнення іонно-плазмовим покриттям. Локальним мікрорентгеноспектральним аналізом встановлено характер зміни структури та їх складу при різних параметрах випробувань на поверхні тертя. Виконана оцінка залишкової товщини іонно-плазмового покриття після експлуатації кілець. Методом оптико-математичного аналізу виявлені особливості структуризації поверхні тертя.
2021-10-04
2021-10-04
Updated: 2025-12-06
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