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Effect of Various Additives on the Oxidation Behavior of ZrB2-Based Ultra-High-Temperature Ceramics at 1800°C.
- Source :
- Journal of the American Ceramic Society; Feb2010, Vol. 93 Issue 2, p345-349, 5p, 1 Color Photograph, 1 Diagram, 1 Graph
- Publication Year :
- 2010
-
Abstract
- The effect of various additives such as TiB<subscript>2</subscript>, HfB<subscript>2</subscript>, CrB<subscript>2</subscript>, TaB, TaSi<subscript>2</subscript>, LaB<subscript>6</subscript>, La<subscript>2</subscript>O<subscript>3</subscript>, and AlN on the oxidation behavior of ZrB<subscript>2</subscript>-based ultra-high-temperature ceramics (UHTCs) at 1800°C was investigated. The additions of CrB<subscript>2</subscript> and HfB<subscript>2</subscript> to the ZrB<subscript>2</subscript>–SiC composites have minor effect on the structure evolution of the oxide scale and oxidation resistance. However, all the other additives, especially for Ti and Ta compounds, have changed the oxidation mechanism resulting in a marked detrimental effect on the oxidation resistance of ZrB<subscript>2</subscript>-based UHTCs. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00027820
- Volume :
- 93
- Issue :
- 2
- Database :
- Complementary Index
- Journal :
- Journal of the American Ceramic Society
- Publication Type :
- Academic Journal
- Accession number :
- 47828642
- Full Text :
- https://doi.org/10.1111/j.1551-2916.2009.03420.x