Si3N4-TiN-SiC复相陶瓷的燃烧合成 |
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引用本文: | 宇航材料工艺.Si3N4-TiN-SiC复相陶瓷的燃烧合成[J].宇航材料工艺,1999,29(3):3. |
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作者姓名: | 宇航材料工艺 |
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摘 要: | Si3N4-TiN-SiC
Multiphase ceramics was produced by self-propagating high-temperature synthesis with TiSi2
and SiC. The liqu id phases produced during combustion of TiSi2 and N2
will decrease conversi on factor of the products. The effect of the dilution and nitrogen
pressure on t he conversion of the products and combustion temperature was analyzed. The
contradictory of liquid phases, dilution and combustion temperature was reso lved by
increasing nitrogen pressure. Decrease of porosity was resulted from the volume expansion
of discomposed TiSi2,the volume expansion of Si transformed to Si3N4
at high temperature. The nitride mechanism of TiSi2 was studied. TiN was first
synthesized,then Si3N4 was formed.
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修稿时间: | :1998-06-0 |
Combustion
Synthesis of Si3N4 |
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Abstract: | |
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