Effect of gas-solid interface on pore wall microstructure evolution during thermal melting of foamed ceramics
文献类型：期刊论文
| 作者 | Li, Jiahui1,2; Cao, Jianwei1; Xu, Baoqiang2; Wang, Zhi1 |
| 刊名 | Journal of Thermal Analysis and Calorimetry
 |
| 出版日期 | 2022-02-01 |
| 卷号 | 147期号:3页码:2035-2046 |
| ISSN号 | 13886150 |
| 关键词 | Pore pressure - Phase interfaces - Porous materials - Melting point - Silicates - Nucleation - Sodium compounds - Gases |
| DOI | 10.1007/s10973-021-10585-w |
| 英文摘要 | In this paper, through thermal analysis of the melting process of foamed ceramics, the microstructure evolution of foamed ceramics and the effect mechanism of the appearance of gas鈥搒olid interface on the evolution of pore wall structure are studied. A new method for regulating the microstructure of pore wall based on gas鈥搒olid interface is proposed. The results show that after the initial melting temperature point, the appearance of the gas鈥搒olid interface provides a large number of heterogeneous nucleation sites, which promotes the precipitation of anorthite in the pore wall. Within the soaking time of 0鈥?0聽min, the gas鈥搒olid interface showed a decreasing trend, which resulted in a significant decrease in the anorthite content on the pore wall and eventually disappeared. The addition of alkali metal oxide-Na2O not only reduces the melting point of the raw material, but also increases the number of gas鈥搒olid interfaces, thereby increasing the content of anorthite in the pore wall. When the Na2O content reaches 2.1聽mass%, the effect of the gas鈥搒olid interface is significantly reduced. Na2O reacts with quartz to form a sodium silicate melt, at the same time, the addition of Na2O provides excess O2鈭? The Mg2+ and Al3+ in the raw material combine with free O2鈭?to form spinel, which promotes the spinel precipitation in the pore wall, leading to the main crystalline phase from anorthite to spinel. This research has important guiding significance for enriching and precisely controlling the preparation process of porous materials. 漏 2021, Akad茅miai Kiad贸, Budapest, Hungary. |
| 学科主题 | Thermoanalysis |
| 项目编号 | This work was funded by the National Key R&D Program of China (2018YFC1901806) and Key R&D Program of Hebei Province (20373807D). |
| 出版者 | Springer Science and Business Media B.V. |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/61213]  |
| 作者单位 | 1.CAS Key Laboratory of Green Process and Engineering, Innovation Academy for Green Manufacture, Institute of Process Engineering, Chinese Academy of Sciences, Beijing; 100190, China 2.Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming; 650093, China |
| 推荐引用方式 GB/T 7714 | Li, Jiahui,Cao, Jianwei,Xu, Baoqiang,et al. Effect of gas-solid interface on pore wall microstructure evolution during thermal melting of foamed ceramics[J]. Journal of Thermal Analysis and Calorimetry,2022,147(3):2035-2046. |
| APA | Li, Jiahui,Cao, Jianwei,Xu, Baoqiang,&Wang, Zhi.(2022).Effect of gas-solid interface on pore wall microstructure evolution during thermal melting of foamed ceramics.Journal of Thermal Analysis and Calorimetry,147(3),2035-2046. |
| MLA | Li, Jiahui,et al."Effect of gas-solid interface on pore wall microstructure evolution during thermal melting of foamed ceramics".Journal of Thermal Analysis and Calorimetry 147.3(2022):2035-2046. |
入库方式： OAI收割
来源：过程工程研究所
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