Fast microwave sintering process of combined silicon nitride-silicon carbide refractorg material |
Title： |
| Fast microwave sintering process of combined silicon nitride-silicon carbide refractorg material |
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Application Number： |
200410009794 |
Application Date： |
2004/11/12 |
Announcement Date： |
2005/04/27 |
Pub. Date： |
2006/06/14 |
Publication Number： |
1609057 |
Announcement Number： |
1259284 |
Grant Date： |
2006-6-14 |
Granted Pub. Date： |
2006-6-14 |
ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
C04B 35/64, C04B 35/565, C04B 35/583 |
Applicant(s)： |
Tsinghua Univ. |
Inventor(s)： |
Pan Wei, Peng Hu, Zhang Xiaodong |
Key Words： |
Fast microwave sintering process, silicon nitride-silicon carbide, refractorg material |
Abstract： |
The present invention relates to refractory material technology. By means of the fast homogeneous heating of microwave to material and reaction promoting effect of microwave field on nitriding reaction, homogeneously mixed silicon nitride, silicon powder and small amount of organic adhesive pressed into blank, stoved and defatted are heated with microwave of industrial microwave source of 900-3000 MHz frequency to 1100-1500 deg.c under the nitrogen atmosphere for nitriding reaction and sintering to densify. After cooling naturally to room temperature, combined refractory silicon nitride-silicon carbide material in specific shape and with bulk weight 2.65-2.80 g/cu cm, compression strength higher than 250 MPa, bending strength higher than 60 MPa, porosity lower than 15 % and excellent heat shock resistance is prepared. |
Claim： |
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Priority： |
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PCT： |
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LegalStatus： |
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