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A mixture of the mechanically alloyed 2Si-B-3C-N powder and short carbon fiber was hot pressed at 1800 °C for 30 mins in nitrogen. Careful investigation to the prepared Cfiber/2Si-B-3C-N ceramic matrix composite revealed that the composite was very difficult to be densified. Heterogeneous nucleation, abnormal grain growth and severe interface reaction occurred on the fiber surface or between the fiber...
The mechanically-alloyed amorphous 2Si-B-3C-N powder was hot pressed at 1900°C for 30mins in argon. A small amount (5mol.%) of AlN and ZrO2 was added to investigate their effect on the sintering process, microstructure and properties of the 2Si-B-3C-N ceramic. XRD, SEM, TEM and property testing results show that, the addition of AlN or ZrO2 promotes the sintering process of the 2Si-B-3C-N composite...
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