Flexural Strength of Superfine Grained Si2N2O-Si3N4 Composites |
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| Journal | Key Engineering Materials (Volumes 353 - 358) |
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| Volume | Progresses in Fracture and Strength of Materials and Structures |
| Edited by | Yu Zhou, Shan-Tung Tu and Xishan Xie |
| Pages | 1477-1480 |
| DOI | 10.4028/www.scientific.net/KEM.353-358.1477 |
| Citation | Jun Ting Luo et al., 2007, Key Engineering Materials, 353-358, 1477 |
| Online since | September, 2007 |
| Authors | Jun Ting Luo, Qing Zhang, Kai Feng Zhang |
| Keywords | Flexural Strength, Si2N2O-Si3N4, Superfine Grained Composite |
| Abstract | The Si3N4- Si2N2O composites were fabricated with amorphous nano-sized silicon nitride powders by the liquid phase sintering(LPS) method. The sintering temperatures ranged from 1500ºC to 1700ºC. Microstructure and component of the composites were performed by scanning electron microscopy (SEM) and X-ray diffraction (XRD). Results show that sintered body consists of Si2N2O and β-Si3N4, with an average grain size about 1μm. The maximum value of flexural strength of the material is 680MPa when sintered at 1700°C. Transcrystalline cracking is the main fracture mechanism of the composites. |
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