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Interaction of SiC with Al2O3−(t + m)ZrO2(Y2O3) Oxide Composition.
- Source :
- Russian Journal of Inorganic Chemistry; Aug2023, Vol. 68 Issue 8, p1077-1083, 7p
- Publication Year :
- 2023
-
Abstract
- We employed contact alloying in the range 1000–1860°С to study the reaction specifics between SiC and Al<subscript>2</subscript>O<subscript>3</subscript>−(t + m)ZrO<subscript>2</subscript>(Y<subscript>2</subscript>O<subscript>3</subscript>) oxide composition. Real-time experiments with photographic recording of the changing size and shape of the Al<subscript>2</subscript>O<subscript>3</subscript>−(t + m)ZrO<subscript>2</subscript>(Y<subscript>2</subscript>O<subscript>3</subscript>) sample on a SiC ceramic substrate showed that Al<subscript>2</subscript>O<subscript>3</subscript>−(t + m)ZrO<subscript>2</subscript>(Y<subscript>2</subscript>O<subscript>3</subscript>) compositions react with the silicon carbide substrate in the range 1720–1860°С to melt and penetrate into (impregnate) the substrate. X-ray powder diffraction patterns were measured for samples taken from the contact area of the oxide composition with SiC directly on the substrate and in a chipped-off <1-mm-deep near-surface layer. ZrС, Al<subscript>2</subscript>Y<subscript>4</subscript>O<subscript>9</subscript>, and Al<subscript>3.21</subscript>Si<subscript>0.47</subscript> were formed in the contact area via redox reactions involving oxide melt, in addition to 6H-SiC, Si and Al<subscript>2</subscript>O<subscript>3</subscript>, t-ZrO<subscript>2</subscript> phases, which are the initial components of the substrate and oxide composition, respectively. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00360236
- Volume :
- 68
- Issue :
- 8
- Database :
- Complementary Index
- Journal :
- Russian Journal of Inorganic Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 174267123
- Full Text :
- https://doi.org/10.1134/S003602362360106X