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https://elib.bsu.by/handle/123456789/304347| Title: | Воздействие УФ лазерных наносекундных импульсов на поверхность хромовой бронзы |
| Other Titles: | Influence of UV laser nanosecond pulses on the surface of chromium bronze / Sergey Mikolutskiy, Taras Malinskiy, Radmir Khasaya, Yury Khomich |
| Authors: | Миколуцкий, С. И. Малинский, Т. В. Хасая, Р. Р. Хомич, Ю. В. |
| Keywords: | ЭБ БГУ::ЕСТЕСТВЕННЫЕ И ТОЧНЫЕ НАУКИ::Физика |
| Issue Date: | 2023 |
| Publisher: | Минск : БГУ |
| Citation: | Взаимодействие излучений с твердым телом : материалы 15-й Междунар. конф., Минск, Беларусь, 26-29 сент. 2023 г. / Белорус, гос. ун-т ; редкол.: В. В. Углов (гл. ред.) [и др.]. – Минск : БГУ, 2023. – С. 273-275. |
| Abstract: | Исследовано воздействие наносекундных импульсов Nd:YAG-лазера с длиной волны 355 нм на поверхность хромовой бронзы. Обнаружено образование субмикронных шарообразных структур в диапазоне плотностей энергии в импульсе от 0.15 до 1.85 Дж/см2. Представлена зависимость концентрации хрома в приповерхностном слое хромовой бронзы после лазерной обработки от плотности энергии излучения в импульсе. Обнаружена некоторая корреляция между пространственной плотностью полученных структур и концентрацией хрома у поверхности сплава. Показано, что максимальная концентрация хрома в приповерхностном слое и наибольшее количество субмикронных структур достигаются при 0.85 Дж/см2. Полученная корреляция пространственной плотности субмикронных структур и концентрации хрома в приповерхностном слое позволяет сделать выводы о возможном механизме возникновения шарообразных структур |
| Abstract (in another language): | The effect of nanosecond pulses generated by a Nd:YAG laser at the third harmonic with a wavelength of 355 nm on the surface of chromium bronze has been studied. The original samples had traces of mechanical processing in the form of a small-scale structure with a characteristic size of several micrometers and a large-scale structure with a size of about 50 μm. Scanning electron microscopy revealed the formation of submicron spherical structures in the range of pulse energy densities from 0.15 to 1.85 J/cm2. Moreover, the diameter of the spherical top was about 600 nm, and the length of the leg-stand was about 1 μm. Studies of the elemental composition of the irradiated surface using energy-dispersive X-ray spectroscopy made it possible to obtain the dependence of the chromium concentration in the near-surface layer of chromium bronze on the energy density of laser radiation per pulse. A certain correlation was found between the spatial density of the obtained structures and the chromium concentration near the alloy surface. It is shown that the maximum concentration of chromium in the near-surface layer and the largest number of submicron structures per unit area are achieved at 0.85 J/cm2. It is assumed that the increase in the concentration of chromium at a certain energy density is associated with different melting and boiling points of copper and chromium, when the first material is already removed from the surface, and the second one still remains. The obtained correlation of the spatial density of submicron structures and the concentration of chromium in the near-surface layer allows us to draw conclusions about the possible mechanism of the formation of spherical structures. This occurs due to the concentration of particles of more refractory chromium at the tops of spherical structures and the removal of low-melting copper around such structures by means of numerous nanosecond laser pulses |
| Description: | Секция 3. Влияние излучений на структуру и свойства материалов = Section 3. Radiation influence on the structure and properties of materials |
| URI: | https://elib.bsu.by/handle/123456789/304347 |
| ISSN: | 2663-9939 (Print) 2706-9060 (Online) |
| Licence: | info:eu-repo/semantics/openAccess |
| Appears in Collections: | 2023. Взаимодействие излучений с твердым телом |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 273-275.pdf | 340,85 kB | Adobe PDF | View/Open |
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