Effects of Si3N4 Additions on Creep Resistance of Al-Al2O3 Composites

Hao Ning Shi; Yong Li; Chuan Jing Li; Hai Xia Qin; Jia Lin Sun

doi:10.4028/www.scientific.net/KEM.697.644

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 697Effects of Si3N4 Additions on Creep Resistance of...

Effects of Si₃N₄ Additions on Creep Resistance of Al-Al₂O₃ Composites

Abstract:

Si₃N₄ (0 and 6 mass%) were added to Al-Al₂O₃ composite respectively, with phenolic resin as binder, to make Al-Si₃N₄-Al₂O₃ unfired composites, which were dried at 200°C for 24h.The creep properties of composites were tested researched under 0.2MPa×50h at 1300°C. The results indicated that the samples put up the features of steady-state creep stage from 25h to 50h; Al₄O₄C appeared in the corundum matrix with the addition of Al,which improve its creep resistance; when Al and Si₃N₄ were both existed, sialon phase was formed while Al4O4C was disappeared.

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Periodical:

Key Engineering Materials (Volume 697)

Pages:

644-647

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.697.644

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Online since:

July 2016

Authors:

Hao Ning Shi, Yong Li*, Chuan Jing Li, Hai Xia Qin, Jia Lin Sun

Keywords:

Alumina, Aluminium, Creep, Silicon Nitride

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