Spectroscopic evaluation of nanocomposite formation from amorphous complex compound in Si3N4-BN system

Junichi Hojo; Koji Eto; Masato Uehara; Naoya Enomoto

doi:10.1016/S1359-6462(01)00897-1

Spectroscopic evaluation of nanocomposite formation from amorphous complex compound in Si₃N₄-BN system

Junichi Hojo, Koji Eto, Masato Uehara, Naoya Enomoto

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

The phase separation behavior of amorphous Si₃N₄-BN composite powder was investigated by spectroscopic methods. The powder was heat-treated in N₂ at 1200-1600°C with and without Y₂O₃-Al₂O₃ sintering aid. The IR analysis indicated that Si₃N₄ and BN were separated above 1400°C and the crystallization was accelerated by the sintering aid. It was found from the XPS analysis that BN was expelled from the inside to the surface of composite particles during heating. Finally; The dense nanocomposite of Si₃N₄-BN system was obtained by hot pressing at 1800°C.

Original language	English
Pages (from-to)	2169-2172
Number of pages	4
Journal	Scripta Materialia
Volume	44
Issue number	8-9
DOIs	https://doi.org/10.1016/S1359-6462(01)00897-1
Publication status	Published - May 18 2001

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

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10.1016/S1359-6462(01)00897-1

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title = "Spectroscopic evaluation of nanocomposite formation from amorphous complex compound in Si3N4-BN system",

abstract = "The phase separation behavior of amorphous Si3N4-BN composite powder was investigated by spectroscopic methods. The powder was heat-treated in N2 at 1200-1600°C with and without Y2O3-Al2O3 sintering aid. The IR analysis indicated that Si3N4 and BN were separated above 1400°C and the crystallization was accelerated by the sintering aid. It was found from the XPS analysis that BN was expelled from the inside to the surface of composite particles during heating. Finally; The dense nanocomposite of Si3N4-BN system was obtained by hot pressing at 1800°C.",

author = "Junichi Hojo and Koji Eto and Masato Uehara and Naoya Enomoto",

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AU - Hojo, Junichi

AU - Eto, Koji

AU - Uehara, Masato

AU - Enomoto, Naoya

PY - 2001/5/18

Y1 - 2001/5/18

N2 - The phase separation behavior of amorphous Si3N4-BN composite powder was investigated by spectroscopic methods. The powder was heat-treated in N2 at 1200-1600°C with and without Y2O3-Al2O3 sintering aid. The IR analysis indicated that Si3N4 and BN were separated above 1400°C and the crystallization was accelerated by the sintering aid. It was found from the XPS analysis that BN was expelled from the inside to the surface of composite particles during heating. Finally; The dense nanocomposite of Si3N4-BN system was obtained by hot pressing at 1800°C.

AB - The phase separation behavior of amorphous Si3N4-BN composite powder was investigated by spectroscopic methods. The powder was heat-treated in N2 at 1200-1600°C with and without Y2O3-Al2O3 sintering aid. The IR analysis indicated that Si3N4 and BN were separated above 1400°C and the crystallization was accelerated by the sintering aid. It was found from the XPS analysis that BN was expelled from the inside to the surface of composite particles during heating. Finally; The dense nanocomposite of Si3N4-BN system was obtained by hot pressing at 1800°C.

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ER -

Spectroscopic evaluation of nanocomposite formation from amorphous complex compound in Si₃N₄-BN system

Abstract

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