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Ti3SiC2 with a nacre-like microstructure was fabricated by slip casting in a strong magnetic field followed by spark plasma sintering (SPS). To determine the effect of the grain size and texture on the mechanical properties, two textured and non-textured Ti3SiC2 ceramics with different grain sizes were prepared with the different initial particle size and SPS sintering temperature. A powder with relatively large plate-like Ti3SiC2 particles was fabricated by the templated-grain growth method. Increasing the grain size increased the fracture toughness of the textured Ti3SiC2 ceramics but decreased the three-point bending strength. The three-point bending strength and fracture toughness of the textured Ti3SiC2 with the large grain size were 812 MPa and 7.3 MPa・m1/2, and those with the small grain size were 1045 MPa and 5.6 MPa・m1/2, respectively. Furthermore, catastrophic failure of the textured Ti3SiC2 ceramics after the fracture toughness test was prevented, similarly to in fiber-reinforced ceramics.

権利情報:

• Creative Commons BY-NC-ND Attribution-NonCommercial-NoDerivs 4.0 International
  

キーワード: MAX相, colloidal processing, textured ceramics, SPS

刊行年月日: 2025-03-15

出版者: Japan Society of Powder and Powder Metallurgy

掲載誌:

• Journal of the Japan Society of Powder and Powder Metallurgy (ISSN: 05328799) vol. 72 issue. Supplement 16B-T5-06

研究助成金:

• JSPS JP19H05115

原稿種別: 著者最終稿 (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.5400

公開URL: https://doi.org/10.2497/jjspm.16b-t5-06

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更新時刻: 2025-04-02 16:30:30 +0900

MDRでの公開時刻: 2025-04-02 17:21:17 +0900