首页|Size Effect on the Radiation Stability Silicon Dioxide Sphere Particles
Size Effect on the Radiation Stability Silicon Dioxide Sphere Particles
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The effect of protons(E=100 keV,F=5×1015 cm-2)exposure on the diffuse reflectance spectra of the SiO2with different size particles in wavelength range from 250 to 2500 nm have been investigated.Particles were nanosphere,submicrosphere,microsphere and submacrosphere,as well as solid micro-and nanocrystals.The synthesis of the particles was carried out by the formation of silica shells and dissolution of the polystyrene core particles.The surface morphology,surface area and crystal structure of the particles have been investigated.When evaluating the changes of the solar absorptance,it was found that the radiation stability of the micro-and submacro-hollow particles is higher than that of the other nanostructured particles,except for solid microcrystals.The low radiation stability of the hollow microparticles is due to the large void inside the hollow particles where radiation defects are not formed.
Laboratory of Radiation Stability Evaluation of Thermal Control Coatings,Amur State University,Blagoveshchensk 675000,Russia
Science and Technology on Material Performance Evaluating in Space Environment Laboratory,Harbin Institute of Technology,Harbin 150001,China
Radiation and Space Materials Laboratory,Tomsk State University of Control Systems and Radio-Electronics,Tomsk 634050,Russia
Department of Material Science and Technology,Nanjing University of Aeronautics&Astronautics,Nanjing 210016,China
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Ministry of Science and Higher Education of the Russian FederationMinistry of Science and Higher Education of the Russian FederationNational Key Laboratory of Materials Behavior and Evaluation Technology in Space Environment FundStability Support Fund of Harbin Institute of Technology of PR China
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