A new route to synthesize β-Si6-zAlzOzN8-z powders

Kazuhiko Aoyagi; Takehito Hiraki; Ramasamy Sivakumar; Toshiyuki Watanabe; Tomohiro Akiyama

doi:10.1016/j.jallcom.2006.09.089

A new route to synthesize β-Si_6-zAl_zO_zN_8-z powders

Kazuhiko Aoyagi, Takehito Hiraki, Ramasamy Sivakumar, Toshiyuki Watanabe, Tomohiro Akiyama

Research output: Contribution to journal › Article

21 Citations (Scopus)

Abstract

β-Sialons (Si_6-zAl_zO_zN_8-z) of z values ranging between 1 and 4 were tried for combustion synthesis using mechanically activated powders of Si, Al and Al₂O₃ with desired mixing ratio in a pressurized nitrogen atmosphere of 1 MPa. The starting materials were milled to 18 min using a planetary ball mill for mechanical activation (MA). Unsuccessful propagations of z values 1 and 2 were explained in terms of amount of Al present in the raw material. Waste Si, of 94.8 mass% in purity, obtained from semiconductor industry was also introduced as a raw material to replace commercially available Si for the combustion synthesis.

Original language	English
Pages (from-to)	236-240
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	441
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jallcom.2006.09.089
Publication status	Published - 2007 Aug 30
Externally published	Yes

Keywords

Ceramics
Gas-solid reaction
SEM
X-ray diffraction

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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Aoyagi, K., Hiraki, T., Sivakumar, R., Watanabe, T., & Akiyama, T. (2007). A new route to synthesize β-Si_6-zAl_zO_zN_8-z powders. Journal of Alloys and Compounds, 441(1-2), 236-240. https://doi.org/10.1016/j.jallcom.2006.09.089

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abstract = "β-Sialons (Si6-zAlzOzN8-z) of z values ranging between 1 and 4 were tried for combustion synthesis using mechanically activated powders of Si, Al and Al2O3 with desired mixing ratio in a pressurized nitrogen atmosphere of 1 MPa. The starting materials were milled to 18 min using a planetary ball mill for mechanical activation (MA). Unsuccessful propagations of z values 1 and 2 were explained in terms of amount of Al present in the raw material. Waste Si, of 94.8 mass% in purity, obtained from semiconductor industry was also introduced as a raw material to replace commercially available Si for the combustion synthesis.",

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AU - Sivakumar, Ramasamy

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AU - Akiyama, Tomohiro

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