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Influence of Si3N4 Adding on the Performance of Al-Al2O3 Composite

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Abstract:

Al-Si3N4-Al2O3 composite was prepared using tabular corundum, white fused corundum,α-Al2O3 fine powder and Si3N4 fine powder as raw materials and phenolic resin as low temperature binder under nitrogen atmosphere at 1 300 °C for 8 h. The results show that the main reinforced phase of Al-Al2O3 is Al4O4C in Al-Al2O3 specimens without Si3N4 fine powder adding,the main reinforced phase of Al-Si3N4-Al2O3 is SIALON while small quantity of Al,Si plastic phase presents in Si3N4 adding Al-Al2O3 specimens. Si5AlON7(Z=1) is formed in Al-Si3N4-Al2O3 specimens at low temperature (1 300 °C), which presents good comprehensive properties.

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Periodical:

Key Engineering Materials (Volume 633)

Pages:

53-56

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.633.53

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Online since:

November 2014

Authors:

Chuan Jing Li, Yong Li*, Hai Xia Qin, Jia Lin Sun, Jun Hong Chen, Wen Dong Xue

Keywords:

Alumina, Aluminum (Al), Composite, Plastic Phase, Reinforced Phase, SiAlON

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© 2015 Trans Tech Publications Ltd. All Rights Reserved

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