Microstructure and Mechanical Properties of 2D Tyranno SA/SiC Composites by Hot Pressing

Author(s):  
Shao Ming Dong ◽  
Yu Sheng Ding ◽  
Qing Zhou ◽  
Akira Kohyama
2010 ◽  
Vol 658 ◽  
pp. 352-355 ◽  
Author(s):  
Hong Feng Yin ◽  
Lin Lin Lu

Ti3SiC2/SiC composites were fabricated by reactive hot pressing method. Effect of processing condition on the microstructure and mechanical properties of the composites were investigated. The results showed that: (1) Hot-pressing temperature influenced the phase constituent of Ti3SiC2/SiC composites. The flexural strength and fracture toughness of composites increased with hot pressing temperature. (2) The flexural strength and fracture toughness of composites increased when the content of SiC was increased. When the SiC content was 30wt% the flexural strength and fracture toughness of Ti3SiC2/SiC composite were 371MPa and 6.9MPa•m1/2 respectively. However, when the content of SiC reached 50wt%, the flexural strength and fracture toughness of composites decreased due to high porosity in the composites. (3) The flexural strength and fracture toughness of composites increased with the particle size of SiC added in composites. (4) Ti3SiC2/SiC composites were non-brittle at room temperature.


2007 ◽  
Vol 353-358 ◽  
pp. 1489-1492
Author(s):  
Shao Ming Dong ◽  
Yu Sheng Ding ◽  
Qing Zhou ◽  
Akira Kohyama

SiC/SiC composites were fabricated by hot pressing (HP) via liquid phase sintering (LPS) using carbon coated 2D woven Tyranno SA fabrics as reinforcement. Both nano-SiC and micro-SiC powders with sintering additives were used for matrix. The effects of preparation conditions on the microstructure and mechanical properties of the composites were characterized. Highly densified composite was obtained at 1780°C under 20MPa with nano-SiC particles. The strength and elastic modulus of the composite were enhanced. When micro-SiC powder was used, higher strength revealed for the composite sintered at 1780°C under 15MPa, although it was not densified enough. Higher sintering temperature (1800°C) is beneficial for the densification of the composite, but is not obvious for the improvement of mechanical properties.


Author(s):  
Daimeng Chen ◽  
Kuibao Zhang ◽  
Jianjun Zeng ◽  
Haiyan Guo ◽  
Bo Li ◽  
...  

2000 ◽  
Vol 283-287 ◽  
pp. 1262-1266 ◽  
Author(s):  
Yutai Katoh ◽  
M Kotani ◽  
A Kohyama ◽  
M Montorsi ◽  
M Salvo ◽  
...  

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