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| Mechanism of Solid silicon particles controlling bubble structure in Na2O-CaO-SiO2 porous glass-ceramics |
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Received:October 31, 2022
Revised:October 31, 2022
Accepted:November 08, 2022
Published Online:April 21, 2023
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| DOI： |
| KeyWord:Silicon particles; Porous structure; Glass-ceramics; Bubble nucleation |
| Author | Institution |
| GUAN Shi-xuan |
China Circular Economy Association |
| YAN Ming-ming |
Key Laboratory of Green Process Engineering,National Engineering Research Center for Green Recycling of Strategic Metal Resources,Institute of Process Engineering,Chinese Academy of Sciences |
| CAO Jian-wei |
Key Laboratory of Green Process Engineering,National Engineering Research Center for Green Recycling of Strategic Metal Resources,Institute of Process Engineering,Chinese Academy of Sciences |
| WANG Zhi |
Key Laboratory of Green Process Engineering,National Engineering Research Center for Green Recycling of Strategic Metal Resources,Institute of Process Engineering,Chinese Academy of Sciences |
| CHANG Ya-li |
China University of Mining and Technology-Beijing |
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| Abstract: |
| Aiming at the unequal distribution of pores in the materials, this paper put forward that solid silicon particles to control the bubble nucleation mechanism within NCS porous glass-ceramics. The effects of solid silicon particles on the thermal field and liquid phase inside NCS porous glass-ceramic were studied using SEM, image processing software Image pro plus 6.0, DSC, and other analytical methods, and the bubble nucleation mechanism of silicon particles regulating NCS porous glass-ceramic was investigated. The results show that the internal thermal diffusion rate of the NCS porous glass-ceramic base batch could be increased by 23.5%, the internal liquid phase generation temperature could be reduced by 60 °C, and the liquid phase generation rate could be increased by 7-8 times. We found that the liquid phase formed initially surrounding the solid silicon particles, the liquid bubble molecules formed from uneven nucleation on the surface of the solid silicon particles. With the temperature increasing, solid silicon particles were not located to produce a new liquid phase. The bubble molecules in the new liquid phase diffused to the surface of the solid silicon particles, promoting the growth of the original bubbles or nucleating them. |
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