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Spark plasma sintering of alpha/beta-SiAlON synthesized by salt-assisted combustion

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Title: Spark plasma sintering of alpha/beta-SiAlON synthesized by salt-assisted combustion
Authors: Niu, Jing Browse this author
Yi, Xuemei Browse this author
Harada, Kazuto Browse this author
Akiyama, Tomohiro Browse this author →KAKEN DB
Keywords: SiAlON
Salt-assisted synthesis
Spark plasma sintering
Phase transformation
Vickers hardness
Issue Date: 25-Dec-2016
Publisher: Elsevier
Journal Title: Journal of alloys and compounds
Volume: 689
Start Page: 266
End Page: 270
Publisher DOI: 10.1016/j.jallcom.2016.07.106
Abstract: This paper describes the spark plasma sintering (SPS) of Y- and Ca-alpha/beta-SiAlON powders synthesized by salt-assisted combustion at temperatures of 1600 degrees C with different holding times. X-ray diffraction reveals that with increasing holding time, the alpha to beta transformation ratio of Y-alpha-SiAlON becomes greater than that of Ca-alpha-SiAlON. Nevertheless, all samples effectively reach their theoretical density after sintering. The Vickers hardness measured with an applied load of 19.614 (2.0 kg) decreases with a decreasing amount of alpha-SiAlON, with a maximum value of 19.4 GPa being achieved in Ca-alpha/beta-SiAlON with an alpha-SiAlON content of 55%.
Rights: © 2016, Elsevier. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
Type: article (author version)
Appears in Collections:エネルギー・マテリアル融合領域研究センター (Center for Advanced Research of Energy and Material) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 秋山 友宏

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