Registration Number
2120U009841, Article
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Стаття
Title
Regularities of influence of electron beam technology on heat resistance of optical elements in precision instrument-making. (AI translated)
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Yatsenko Irina
Antonyuk Victor
Vashchenko Vyacheslav
Kyrychenko Oksana
Butenko Tatiana
Kolinko Sergiy
Yatsenko Kateryna
Яценко Ірина В'ячеславівна
Ващенко Вячеслав Андрійович
Бутенко Тетяна Іванівна
Колінько Сергій Олександрович
Яценко Катерина
Yatsenko Irina
Antonyuk Victor
Vashchenko Vyacheslav
Kyrychenko Oksana
Butenko Tatiana
Kolinko Sergiy
Yatsenko Kateryna
Yatsenko Iryna V'yacheslavivna
Vashchenko Vyacheslav Andriiovych
Butenko Tetyana Ivanivna
Kolinko Serhii Oleksandrovych
Yatsenko Kateryna
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01-01-2020
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Черкаський державний технологічний університет
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https://er.chdtu.edu.ua/handle/ChSTU/4115
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Machines. Technologies. Materials
Description
Existing experimental researches show that in order to prevent the destruction of optical elements of modern opto-electronic
devices (discs as the light filter linings for IR devices, the input protective windows of laser sighting systems for observation in IR areas of
the spectrum, semispherical fairings of IR devices for homing and observation of objects, lightguides for laser medical devices, etc.),
electron beam method becomes promising, as it provides cleaning of surfaces, increases their microhardness, makes them more resistant to
external influences. The results of experimental studies to improve the properties of the surface layers of elements from optical ceramics
after their processing with a moving electron beam with a heat density Fn = 106...1.6∙107 W/m2 and moving speed V = 10-3...10-1 m/s
(increase in the surface microhardness from 1.2 ... 2.9 GPa (raw elements) to 5.7 ... 6.4 GPa (processed elements), the occurrence of
hardened layers with a thickness of 210... 230 microns). It has been established that the improvement of these properties leads to an increase
in the resistance of elements to external thermal effects: an increase of 1.3...1.7 times the critical values of external heat flows and their
exposure times, exceeding which leads to the destruction of elements and the failure of devices for the studied range of change of external
pressure is 105...107 Pa; increasing the maximum allowable values of thermoelastic stresses in elements from 50...140 MPa to 160...370
MPa at heating temperatures of 300...1200 K.
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2026-04-27
