✦ LIBER ✦

Temperature-controlled synthesis of Si3N4 nanomaterials via direct nitridation of Si powders

✍ Scribed by Feng Wang; Xiaofang Qin; Guoqiang Jin; Xiangyun Guo

Publisher: Elsevier Science
Year: 2010
Tongue: English
Weight: 434 KB
Volume: 42
Category: Article
ISSN: 1386-9477
DOI: 10.1016/j.physe.2010.03.017

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✦ Synopsis

Si 3 N 4 nanomaterials with different morphologies have been synthesized via direct nitridation of Si powders without using any catalyst by controlling the reaction temperature. The purified Si 3 N 4 samples were characterized by X-ray diffraction and transmission electron microscopy. The results showed that the reaction temperature has an important effect on the crystalline phase and morphology of the Si 3 N 4 samples. The Si 3 N 4 samples undergo a phase transformation of a-Si 3 N 4 to b-Si 3 N 4 , and their morphologies change from nanoparticles to nanowires, and then to nanobelts with increase in the reaction temperature.

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