Direct Synthesis of α-Silicon Nitride Nanowires from Silicon Monoxide on Alumina
Silicon nitride nanowires were synthesized using silicon monoxide as raw materials and an alumina plate as substrate at 1500°C. The obtained nanowires were characterized by X-ray diffraction, Fourier transform infrared spectrosco‐ py, scanning electron microscopy, high-resolution trans‐ mission elec...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2015-10-01
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| Series: | Nanomaterials and Nanotechnology |
| Subjects: | |
| Online Access: | http://www.intechopen.com/journals/nanomaterials_and_nanotechnology/direct-synthesis-of-alpha-silicon-nitride-nanowires-from-silicon-monoxide-on-alumina |
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| Summary: | Silicon nitride nanowires were synthesized using silicon monoxide as raw materials and an alumina plate as substrate at 1500°C. The obtained nanowires were characterized by X-ray diffraction, Fourier transform infrared spectrosco‐ py, scanning electron microscopy, high-resolution trans‐ mission electron microscopy and thermogravimetric- differential scanning calorimetry. The results revealed that silicon nitride nanowires possess a diameter of about 200 nm and a length of several hundred micrometres. The preferred growth direction of the nanowires was [100]. The chemical and structural composition of the silicon nitride nanowires were also studied and were shown to have a composition of primarily α-Si3N4. The temperature for fierce oxidation in air was above 1135°C. The formation mecha‐ nism of silicon nitride nanowires was assumed to be a vapour-solid (VS) process. |
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| ISSN: | 1847-9804 |