Microstructure and mechanical properties of Ti3SiC2/3Y-TZP composites by spark plasma sintering

Ti3SiC2/3Y-TZP (3 mol% yttria-stabilised tetragonal zirconia polycrystal) composites were fabricated by SPS. The effect of Ti3SiC2 content on the room-temperature mechanical properties and microstructure of the composites were investigated. The Vickers hardness and bending strength of the composites...

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Veröffentlicht in:	Journal of the European Ceramic Society 2007, Vol.27 (1), p.413-417
Hauptverfasser:	WEI PAN, SHI, Sui-Lin
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Building materials. Ceramics. Glasses Ceramic industries Cermets, ceramic and refractory composites Chemical industry and chemicals Cross-disciplinary physics: materials science rheology Exact sciences and technology Materials science Miscellaneous Other materials Physics Specific materials Technical ceramics
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Zusammenfassung:	Ti3SiC2/3Y-TZP (3 mol% yttria-stabilised tetragonal zirconia polycrystal) composites were fabricated by SPS. The effect of Ti3SiC2 content on the room-temperature mechanical properties and microstructure of the composites were investigated. The Vickers hardness and bending strength of the composites decreased with increasing Ti3SiC2 content whereas the fracture toughness increased. The maximum fracture toughness of 9.88 MPa.m1/2 was achieved for the composite with 50 vol% Ti3SiC2. The improvement of the fracture toughness is due to crack deflection, crack bridging, and transformation toughening effects. 21 refs.
ISSN:	0955-2219 1873-619X
DOI:	10.1016/j.jeurceramsoc.2006.05.072