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Sintering Character of Coated Al2O3-Y2O3/ZrB2 Composite Powder Materials via Spark Plasma Sintering

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Abstract:

ZrB2 has some excellent physical performance and chemical stability, it has been widely applied in a lot of fields. In order to improve disadvantages of ZrB2 that the sintering densification of ZrB2 is too difficult, and it is easy oxidized at high temperature, in this paper, the sintering character of coated A12O3-Y2O3/ZrB2 composite powder materials via spark plasma sintering were investigated. Al2O3-Y2O3/ZrB2 composite powders were prepared by a co-precipitation methods. When the pH is 9, the encapsulted structure of A1(OH)3-Y(OH)3/ZrB2 composite powders is the best. By analyzing the ZrB2 surface status with TEM, the A12O3-Y2O3/ZrB2 composite powders were prepared under the calcining conditions of 600°C¡æ in argon. The high density ZrB2-YAG multi-phase ceramics are prepared via spark splama sintering, which indicate the raw materials adding A12O3-Y2O3 help for the densification of ZrB2 ceramics.

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Periodical:

Advanced Materials Research (Volume 804)

Pages:

42-46

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.804.42

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Online since:

September 2013

Authors:

Jie Guang Song, Ming Han Xu, Xiu Qin Wang, Shi Bin Li, Gang Chang Ji

Keywords:

Sintering Character, Spark Plasma Sintering (SPS), Ultra-High-Temperature Ceramics, ZrB2

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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