2024 Powder Metallurgy World Congress & Exhibition

Presentation information

General Sessions (Oral) » T5 Field Assisted Sintering Technologies

[T5] Field Assisted Sintering Technologies

Oral

Wed. Oct 16, 2024 4:10 PM - 5:30 PM Room B (3F 302, Conference Center)

Chairpersons: Hidehiro Yoshida (The University of Tokyo, Japan), Jian Luo (University of California San Diego, USA)

4:10 PM - 4:30 PM

[16B-T5-06] Fabrication and Mechanical Properties of Textured Ti3SiC2 by Slip Casting in a Strong Magnetic Field Followed by Spark Plasma Sintering

Y. Sakka1, K. Sato1, H. Hirano1,2, T. Ishigaki2, T. S. Suzuki1, *K. Morita1 (1.National Institute for Materials Science, Japan, 2.Hosei University, Japan)

Keywords:MAX phase ceramics, colloidal processing, textured ceramics, mechanical property, SPS

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 by 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.