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weichang

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515825903931(½ð±Ò+1,VIP+0): 6-17 22:24
keywords: self-propagating combustion synthesis, silicon carbide,  preheating treatment,
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2Â¥2009-06-17 21:09:13
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weichang

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515825903931(½ð±Ò+5,VIP+0): 6-17 22:24
study on synthesis of SiC at high temperature by self-propagation

Silicon and carbon powders with different diameters and with the mole ratio of  of 1:1 were used to synthesize SiC by self-propagating combustion. ²ÉÓò»Í¬Á£¾¶µÄ¹è·ÛÓë̼·ÛΪԭ²ÄÁÏ£¬ÔÚĦ¶û±ÈΪ1£º1µÄÌõ¼þϽøÐÐ×ÔÂûÑÓȼÉպϳÉSiC¡£²¢Í¨¹ýXÉäThe synthesized product was analysized by X-ray diffraction (XRD), analysis of the particle size, and scanning electron microscope (SEM). ÏßÑÜÉä¡¢Á£¶È·ÖÎöÓëɨÃèµç¾µ¶ÔºÏ³É²úÎï½øÐзÖÎö¡£½á¹û±íÃ÷£ºÍ¨¹ý×ÔÂûÑÓȼÉÕ·½·¨¿ÉÒԺϳÉSiC£¬ºÏ³ÉSiCÁ£¶ÈÓë̼·ÛÁ£¶È´óСÓйء£The results showed that the diameter of SiC particles synthesized by self-propagating combustion  was associated with the size of carbon powder.

[ Last edited by weichang on 2009-6-17 at 21:26 ]
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weichang

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prince_of_persia

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515825903931(½ð±Ò+1,VIP+0): 6-17 22:24
preheating reaction Ô¤ÈÈ·´Ó¦
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4Â¥2009-06-17 21:25:32
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monitor2885

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515825903931(½ð±Ò+3,VIP+0): 6-17 22:25
²ÉÓò»Í¬Á£¾¶µÄ¹è·ÛÓë̼·ÛΪԭ²ÄÁÏ£¬ÔÚĦ¶û±ÈΪ1£º1µÄÌõ¼þϽøÐÐ×ÔÂûÑÓȼÉպϳÉSiC¡£²¢Í¨¹ýXÉäÏßÑÜÉä¡¢Á£¶È·ÖÎöÓëɨÃèµç¾µ¶ÔºÏ³É²úÎï½øÐзÖÎö¡£½á¹û±íÃ÷£ºÍ¨¹ý×ÔÂûÑÓȼÉÕ·½·¨¿ÉÒԺϳÉSiC£¬ºÏ³ÉSiCÁ£¶ÈÓë̼·ÛÁ£¶È´óСÓйء£
Combustion synthesis of SiC was completed using different sizes for the silica  power and carbon power as raw materials, under 1:1 molar ratio conditions of self-propagating. By X-ray diffraction, particle size analysis and scanning electron microscopy were applied to analyze this synthetic product. The results show that this method, self-propagating combustion synthesis of SiC, was successful, and particle size of synthesis of SiC concerned particle size of carbon power.
Retirement
5Â¥2009-06-17 22:11:45
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