Preparation of β-Phase Silicon Nitride Powders

Jian Lei Wang; Jiu Ming Liu; Shu Xia Ren

doi:10.4028/www.scientific.net/AMR.650.58

Paper Titles

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Fast Detection of Local Anesthetic Ropivacaine by Impedance Method on Polypyrrole-Graphene Oxide
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Improved Dark Current Properties in Bi-Layer Structured Organic Photodetectors
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Preparation of β-Phase Silicon Nitride Powders
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The Focus of Beam Using Optical Transformation
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 650Preparation of β-Phase Silicon Nitride Powders

Preparation of β-Phase Silicon Nitride Powders

Abstract:

Silicon nitride powders high in β-phase content have been prepared by direct nitriding method. The silicon powders were first milled with 30%α-Si₃N₄ and 4% FeCl₃ for 30 minutes. Then the mixture was heat-treated at 1400°C for 2 hours in the pure nitrogen gas. The phase and the microstructure of the as-prepared product were detected by X-ray diffraction (XRD) and scanning electron microscope (SEM). The results showed that the product mainly consisted of β-Si₃N₄, whose content is more than 92%, and a little amount of α-Si₃N₄, and no silicon were detected within the detection limit.

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Periodical:

Advanced Materials Research (Volume 650)

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58-60

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.650.58

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Online since:

January 2013

Authors:

Jian Lei Wang, Jiu Ming Liu, Shu Xia Ren

Keywords:

Powder, Silicon Nitride, β-Phase

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