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- W2359559989 abstract "Al2O3matrix ceramic substrate was prepared by gelcasting technology using high purity α-Al2O3powder as raw material and the sintered steatite,calcium carbonate,kaolin clay as sintering aids.The results show that the sintering temperature of the green bodies is between 1530℃ and 1550℃.The microstructures,thermal and electrical properties of the sintered bodies were studied by using SEM and so on.And the results of experiments show that the grains arrange uniformly and orderly,and the pore ratio is low.The thermal diffusivity is 0.0668～0.0154cm2/s from 20℃ to 1000℃,and reduces with increasing the temperature.In the range of the testing frequencies,the dielectric constant is 9.3~9.4 and the dielectric loss angle tangent is 2.2×10-3～5.4×10-3.The dielectric constant firstly decreases and then keeps constant as the frequency increases.The dielectric loss angle tangent reduces firstly,and then increases." @default.
- W2359559989 created "2016-06-24" @default.
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- W2359559989 date "2008-01-01" @default.
- W2359559989 modified "2023-09-27" @default.
- W2359559989 title "Study on Preparation and Properties of Alumina Ceramic Substrate" @default.
- W2359559989 hasPublicationYear "2008" @default.
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