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The mechanism study of low-pressure air plasma cleaning on large-aperture optical surface unraveled by experiment and reactive molecular dynamics simulation 被引量:1
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作者 Yuhai LI Qingshun BAI +9 位作者 Yuheng GUAN Hao LIU Peng ZHANG Buerlike BATELIBIEKE Rongqi SHEN Lihua LU Xiaodong YUAN Xinxiang MIAO Wei HAN caizhen yao 《Plasma Science and Technology》 SCIE EI CAS CSCD 2022年第6期77-87,共11页
Low-pressure air plasma cleaning is an effective method for removing organic contaminants on large-aperture optical components in situ in the inertial confinement fusion facility.Chemical reactions play a significant ... Low-pressure air plasma cleaning is an effective method for removing organic contaminants on large-aperture optical components in situ in the inertial confinement fusion facility.Chemical reactions play a significant role in plasma cleaning,which is a complex process involving abundant bond cleavage and species generation.In this work,experiments and reactive molecular dynamics simulations were carried out to unravel the reaction mechanism between the benchmark organic contaminants of dibutyl phthalate and air plasma.The optical emission spectroscopy was used to study the overall evolution behaviors of excited molecular species and radical signals from air plasma as a reference to simulations.Detailed reaction pathways were revealed and characterized,and specific intermediate radicals and products were analyzed during experiments and simulation.The reactive species in the air plasma,such as O,HO_(2)and O_(3)radicals,played a crucial role in cleaving organic molecular structures.Together,our findings provide an atomic-level understanding of complex reaction processes of low-pressure air plasma cleaning mechanisms and are essential for its application in industrial plasma cleaning. 展开更多
关键词 organic contaminants large-aperture optical components low-pressure air plasma plasma cleaning reactive species reactive molecular dynamics
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Preparation and properties of Ni-W-P-TiO_(2)nanocomposite coatings developed by a sol-enhanced electroplating method
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作者 Zhen He Yu Zhou +4 位作者 Yuxin Wang Pingyi Guo Wensen Jiang caizhen yao Xin Shu 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2022年第4期369-376,共8页
Several Ni-W-P-TiO_(2) nanocomposite coatings were developed by the sol-enhanced electroplating method. The phase and elemental compositions of coatings were determined, and the surface and cross-section morphology we... Several Ni-W-P-TiO_(2) nanocomposite coatings were developed by the sol-enhanced electroplating method. The phase and elemental compositions of coatings were determined, and the surface and cross-section morphology were characterized. The mechanical and corrosion performance were systematically tested. The results revealed the addition of 5 ml·L^(-1) TiO_(2) sol caused a compact coating surface,while higher concentrations of TiO_(2) reduced the coating thickness and led to the inferior surface microstructure. The comparison in physiochemical properties of prepared coatings confirmed the superior performance of the Ni-W-P-TiO_(2) nanocomposite coating at 5 ml·L^(-1) TiO_(2) sol addition. Under this condition, the best mechanical properties were achieved when abrasive wear was the dominating wearresistance mechanism, and the best corrosion resistance was obtained due to its smooth and compact surface microstructure. 展开更多
关键词 NI-W-P TiO_(2) ELECTROPLATING Mechanical property
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