التفاصيل البيبلوغرافية
| العنوان: |
Influence of high field strength ions on the crystallization characteristics and properties of slag glass-ceramics. |
| المؤلفون: |
Wei, Ying1 (AUTHOR), Du, Yongsheng1 (AUTHOR) dys1111@imust.edu.cn, Guo, Yuhang1 (AUTHOR), Zhao, Dongyu1 (AUTHOR), Zhang, Hongxia1 (AUTHOR), Deng, Leibo1 (AUTHOR), Chen, Hua1 (AUTHOR), Zhao, Ming2 (AUTHOR) |
| المصدر: |
Ceramics International. Oct2024:Part B, Vol. 50 Issue 20, p39516-39527. 12p. |
| مصطلحات موضوعية: |
*FERRIC oxide, *GLASS-ceramics, *DIFFERENTIAL scanning calorimetry, *NUCLEATING agents, *TITANIUM dioxide, *GRAIN refinement |
| مستخلص: |
Blast furnace slag glass–ceramics were prepared by melting using rare-earth-containing blast furnace slag (REBFS) as the main raw material and Fe 2 O 3 and Cr 2 O 3 as composite nucleating agents. By adding different TiO 2 contents, the study comprehensively revealed the effects of high field strength ions on the glass network structure, crystalline properties, elemental distribution and physicochemical properties. Raman spectroscopy and differential scanning calorimetry revealed that TiO 2 acted primarily as a network modifier in the glass network. The appropriate TiO 2 content disrupted the glass network, decreasing the crystallization activation energy (E C) of the glass–ceramic. However, excess TiO 2 repaired the network structure, thereby increasing the E C. The combined effect of the Cr and Ti substantially improved the crystallization characteristics of the glass-ceramics. Cr 2 O 3 induced the formation of spinel, which promoted the crystallization of the main crystalline augite phase. The self-aggregation of the high field strength Ti4+ ion induced the formation of a titanium- and cerium-containing titanite phase, which also contributed to grain refinement. This titanite phase effectively increased the Vickers hardness and acid and alkali resistances of the glass-ceramics to 9.16 GPa and over 98.5 %, respectively. The excellent physicochemical properties render REBFS glass–ceramics as being promising materials for various construction applications. This research provides theoretical support for comprehensively utilizing blast furnace slag and provides theoretical guidance for preparing slag glass–ceramics possessing desirable physicochemical properties. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
Academic Search Index |