发明名称 |
METHOD OF MANUFACTURE OF ALUMINIUM NITRIDE-BASED HEAT-CONDUCTING CERAMICS |
摘要 |
FIELD: powder metallurgy; manufacture of aluminium nitride-based heat-conducting ceramics. SUBSTANCE: method consists in sintering aluminium nitride powder having form of microcrystals with needle particles obtained in mode of self-propagating high-temperature synthesis or mixture of aluminium nitride obtained by any known method with at least 5 mas.-% of aluminum nitride obtained in mode of self-propagating high-temperature synthesis and containing particles in form of monocrystal fibers at presence of no more than 6 mas.-% of yttrium oxide within a period of time of no more than 1 hour in nitrogen medium at pressure of no less than 0.12 Mpa followed by annealing sintered ceramics in the same gaseous medium at temperature not higher than 1800 C for at least 5 hours. EFFECT: enhanced economical efficiency; increased heat conductivity to 200 W/m k. 2 cl, 1 dwg, 1 tbl
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申请公布号 |
RU2144010(C1) |
申请公布日期 |
2000.01.10 |
申请号 |
RU19980103569 |
申请日期 |
1998.02.20 |
申请人 |
IALOVEDENIJA RAN;IALOVEDENIJA RAN |
发明人 |
SHARIVKER S.JU.;BOROVINSKAJA I.P.;ZAKORZHEVSKIJ V.V.;KOBJAKOV V.P. |
分类号 |
C04B35/581;(IPC1-7):C04B35/581 |
主分类号 |
C04B35/581 |
代理机构 |
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地址 |
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