A novel approach for preparing electrically conductive α/β SiAlON-TiN composites by spark plasma sintering

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概要

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• An effective approach for preparing electrically conductive SiAlON-TiN composites have been developed. Granules of a designed composition of α-β SiAlON were obtained by spray drying and coated with varying amounts of TiO_2 powder (0-10 vol%) homogenously by mechanical mixing. Fully dense composites were obtained by spark plasma sintering (SPS) under a pressure of 50 MPa at 1650℃ for 5min. According to the scanning electron microscope (SEM) analysis, unique microstructures containing continuously segregated in-situ formed TiN phase in 3D were achieved. Additionally, X-ray diffraction (XRD) studies revealed that all TIO_2 was successfully converted to TiN. The resistivity of the α-β SiAlON (1 x 10^<11> Ω・m) was drastically reduced down to 2 x 10^<-4> Ω・m at 5 vol% TiO_2 addition.

• 社団法人日本セラミックス協会の論文
• 2008-07-01

著者

• KARA A.

  Department of Biological Sciences, National University of Singapore

• Kara F.

  Department Of Materials Science & Engineering Anadolu University

• Kalemtas A.

  Department Of Materials Science & Engineering Anadolu University

• AYAS E.

  Department of Materials Science & Engineering, Anadolu University

• Ayas E.

  Department Of Materials Science & Engineering Anadolu University

• Kara A.

  Department Of Biological Sciences National University Of Singapore

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• A novel approach for preparing electrically conductive α/β SiAlON-TiN composites by spark plasma sintering

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