Investigation of fracture behavior of cement-bonded corundum castables using wedge splitting test and digital image correlation method
| Autor: | Baokuan Li, Liping Pan, Yajie Dai, Tianbin Zhu, Qinghu Wang, Xiaofeng Xu, Zhu He, Yawei Li |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Cement Digital image correlation Materials science business.product_category Fracture mechanics Corundum 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology Microstructure 01 natural sciences Wedge (mechanical device) Brittleness 0103 physical sciences Materials Chemistry Ceramics and Composites Fracture (geology) engineering Composite material 0210 nano-technology business |
| Zdroj: | Journal of the European Ceramic Society. 40:1728-1737 |
| ISSN: | 0955-2219 |
| Popis: | To investigate the fracture behavior of cement-bonded corundum castables, various cement contents and pre-treating temperatures have been comparatively studied using the wedge splitting method and the digital image correlation technique. The results show that the microstructure enhances the mechanical properties, so the fracture energy and the maximum load as well as the fracture modes are affected correspondingly. The castables demonstrate the highest fracture energy and maximum load at 1600 °C with cement content of 10 wt% due to an appropriate amount of CA6. At the temperatures of 110 and 1100 °C, the crack propagation within the matrix and along the interface are dominated whereas within the aggregates significantly increased at 1600 °C, leading to the brittleness of materials. However, increasing the cement content can reduce their brittleness, caused by the maximum strain in thex-direction, largest length of the main crack, and high ratio of crack propagation in the matrix. |
| Databáze: | OpenAIRE |
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