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- W2379221907 abstract "AlN ceramics prepared at high pressure with Y2O3 as a sintering aids were heat treated in a nitrogen flow atmosphere.The effects of heat treatment on microstructure and thermal conductivity of AlN ceramics were studied.The results show that the grain size of the AlN ceramics heat-treated at 970 ℃ for 2h is significantly increased,and the actual crystal is more perfect and the second phases are almost present at the grain boundaries and triple junctions compared with the samples without heat treatment,and its thermal conductivity increases to 156.7 W/(m.K) from 77.3 W/(m.K) of the un-treated ceramics.However,the pore size of AlN ceramics is increased and the phenomenon of anti-densification is observed while the heat treatment time is extended to 4 h.The thermal conductivity of AlN ceramics heat-treated at 970 ℃ for 4 h is reduced to 92.6 W/(m.K)." @default.
- W2379221907 created "2016-06-24" @default.
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- W2379221907 date "2011-01-01" @default.
- W2379221907 modified "2023-09-25" @default.
- W2379221907 title "Microstructure and thermal conductivity of heat-treated aluminum nitride ceramics sintered at high pressure" @default.
- W2379221907 hasPublicationYear "2011" @default.
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