Academic Journal
Reinforcing Mechanisms of Graphene and Nano-TiC in Al2O3-Based Ceramic-Tool Materials
| العنوان: | Reinforcing Mechanisms of Graphene and Nano-TiC in Al2O3-Based Ceramic-Tool Materials |
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| المؤلفون: | Zhefei Sun, Jun Zhao, Xuchao Wang, Enzhao Cui, Hao Yu |
| المصدر: | Nanomaterials, Vol 10, Iss 9, p 1815 (2020) |
| بيانات النشر: | MDPI AG, 2020. |
| سنة النشر: | 2020 |
| المجموعة: | LCC:Chemistry |
| مصطلحات موضوعية: | graphene/nano-TiC, ceramics, microstructure, mechanical properties, reinforcing mechanisms, Chemistry, QD1-999 |
| الوصف: | Graphene and nano-TiC, which have good reinforcing effects on Al2O3-based ceramic-tool materials, are generally used as additive phases for ceramics. In this study, nine kinds of samples were sintered, to investigate the effects of graphene and nano-TiC on the reinforcing mechanisms of Al2O3-based ceramics. The experimental results indicated that adding 0.5 vol% graphene and 10 vol% nano-TiC can obtain the optimum flexural strength, fracture toughness, and Vickers hardness, which were 705 ± 44 MPa, 7.4 ± 0.4 MPa m1/2, and 20.5 ± 0.8 GPa, respectively. Furthermore, the reinforcing mechanisms of crack bridging, pull-out of graphene, and pull-out of nano-TiC are identified, which are contributed to improving the mechanical properties of ceramics. Meanwhile, other reinforcing mechanisms induced by graphene (graphene break, crack guiding, and 3D propagation) and nano-TiC (crack branching, crack deflection, and peeling) are discussed. These reinforcing mechanisms are coupled together, while decoupling is hard to work out. Thus, further quantitative studies of reinforcing effects of graphene and nano-TiC on Al2O3-based ceramic-tool materials are necessary to be carried out. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 10091815 2079-4991 |
| Relation: | https://www.mdpi.com/2079-4991/10/9/1815; https://doaj.org/toc/2079-4991 |
| DOI: | 10.3390/nano10091815 |
| URL الوصول: | https://doaj.org/article/77be3193f80e45babc86b806f206cf40 |
| رقم الانضمام: | edsdoj.77be3193f80e45babc86b806f206cf40 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 10091815 20794991 |
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| DOI: | 10.3390/nano10091815 |