Evaluation of the self-healing capacity of ceramics produced with alumina and silicon carbide
| Autor: | N. R. de Souza, P. R. P. de Paiva |
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| Jazyk: | English<br />Portuguese |
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Cerâmica, Vol 68, Iss 386, Pp 229-235 (2022) |
| Druh dokumentu: | article |
| ISSN: | 1678-4553 0366-6913 07794355 |
| DOI: | 10.1590/0366-69132022683863198 |
| Popis: | Abstract The self-healing capacity of a ceramic material produced by uniaxial pressing with alumina (Al2O3), silicon carbide (SiC), and magnesium oxide (MgO) was evaluated. To assess self-healing, a discontinuity was generated on the surface of the specimens. The healing time in the oven, at a temperature of 1000 ºC, was 1, 30, and 60 min. The specimens were analyzed by physical and mechanical tests. The results showed that, for the mixture containing 15% SiC, the specimens healed at 60 min had an increase in flexural strength of 84.9% when compared to the specimens that were only indented while for the specimens containing 20% SiC, this increase was 61.1% at 30 min. For the 30 min healing time, there was a reduction in the size of the discontinuity in the specimens by about 19.1% and 14.8%, for the formulation containing 15% and 20% of SiC, respectively. |
| Databáze: | Directory of Open Access Journals |
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