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Preparation and application of MgO/nano MgAl2O4 core-shell aggregates with improved hydration and thermal shock resistance.
- Source :
-
Ceramics International . Oct2022, Vol. 48 Issue 20, p30451-30461. 11p. - Publication Year :
- 2022
-
Abstract
- MgO/nano MgAl 2 O 4 core-shell aggregates were prepared using nano-Al 2 O 3 suspension and MgO aggregates by vacuum impregnation method and then heat treated. The MgO/nano MgAl 2 O 4 core-shell aggregates possess excellent hydration resistance and thermal shock resistance (TSR), which are attributed to the in-situ formed MgAl 2 O 4 reducing the contacting area between MgO and water as well as the reduced pore and pore size. The pinning effect of nano-MgAl 2 O 4 and thermal mismatch between MgO and MgAl 2 O 4 contribute to improving TSR of aggregates. The TSR and hot modulus of ruputure were enhanced when the prepared MgO/nano MgAl 2 O 4 core-shell aggregates were introduced into MgO–C slide plate. [ABSTRACT FROM AUTHOR]
- Subjects :
- *THERMAL shock
*THERMAL resistance
*MAGNESIUM oxide
*HYDRATION
*HEAT treatment
Subjects
Details
- Language :
- English
- ISSN :
- 02728842
- Volume :
- 48
- Issue :
- 20
- Database :
- Academic Search Index
- Journal :
- Ceramics International
- Publication Type :
- Academic Journal
- Accession number :
- 158674365
- Full Text :
- https://doi.org/10.1016/j.ceramint.2022.06.325