Effects of various reducing agents on the synthesis of Si3N4 whiskers from diatomaceous earth

Yukako Mizuhara; Masao Noguchi; Tatsumi Ishihara; Yusaku Takita

Effects of various reducing agents on the synthesis of Si3N4 whiskers from diatomaceous earth

Yukako Mizuhara, Masao Noguchi, Tatsumi Ishihara, Yusaku Takita

Research output: Contribution to journal › Article

Abstract

Diatomaceous earth were subjected to carbothermal reduction and nitridation in a flow of nitrogen containing various reducing agents; NH₃, H₂, CO, and CH₄. It was found that a carbon plate or mathane are capable of reducing SiO₂, but neither H₂ nor CO. The effect of addition of powdered carbon to diatomaceous earth was also studied. Results were obtained in terms of the yields both outside and inside the whiskers.

Original language	English
Pages (from-to)	640-645
Number of pages	6
Journal	Journal of the Ceramic Society of Japan. International ed.
Volume	102
Issue number	7
Publication status	Published - Jul 1994
Externally published	Yes

All Science Journal Classification (ASJC) codes

Engineering(all)

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Mizuhara, Y., Noguchi, M., Ishihara, T., & Takita, Y. (1994). Effects of various reducing agents on the synthesis of Si3N4 whiskers from diatomaceous earth. Journal of the Ceramic Society of Japan. International ed., 102(7), 640-645.

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abstract = "Diatomaceous earth were subjected to carbothermal reduction and nitridation in a flow of nitrogen containing various reducing agents; NH3, H2, CO, and CH4. It was found that a carbon plate or mathane are capable of reducing SiO2, but neither H2 nor CO. The effect of addition of powdered carbon to diatomaceous earth was also studied. Results were obtained in terms of the yields both outside and inside the whiskers.",

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