Fabrication and Mechanical Properties of High-Pure Ti₃SiC₂ Bulk Materials Directly by Hot-Pressing its Powder

Abstract:

High-pure bulk Ti3SiC2 samples were fabricated by directly hot-pressing (HP) high-pure Ti3SiC2 powder without any additives at 1200°C to 1500°C for 0.5–2 hours in flow argon atmosphere. X-ray diffraction (XRD) and scanning electron microscope (SEM) were used for phase identification and microstructure evaluation. The fabricated Ti3SiC2 materials have relative high density with high purity, flexural strength of 500-700MPa and fracture toughness of 9-12MPa·m1/2. The influence of sintering temperature and soaking time on the mechanical properties of Ti3SiC2 materials was discussed. The sintering mechanism for Ti3SiC2 powder without any additives was considered to be related with the fragile-ductile transformation of Ti3SiC2 at 1100°C.

• Periodical: Key Engineering Materials (Volumes 336-338)
• Pages: 958-960
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.336-338.958
• Online since: April 2007
• Authors: Yang Song, Chang An Wang, Chun Qing Peng, Yong Huang
• Keywords: High Purity, Hot-Pressing, Ti₃SiC₂ Bulk Material

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