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Reaction Sintering of β-Si3N4/α'-Sialon Ceramics

Published online by Cambridge University Press:  25 February 2011

S. Boskovic ,
K.J. Lee  and
T.Y. Tien
S. Boskovic
Affiliation:
Institute of Nuclear Sciences, Vinca 11001 Belgrade, Yugoslavia
K.J. Lee
Affiliation:
Materials Science and Engineering, The University of Michigan, Ann Arbor, MI 48109
T.Y. Tien
Affiliation:
Materials Science and Engineering, The University of Michigan, Ann Arbor, MI 48109
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Abstract

Compositions in the α'-SiAlON-√-Si3N4 solid solution region in the system Si,Al,Y/N,O which contained a third phase as a sintering aid were prepared. Mixtures of starting materials were reaction sintered to full densities without applied pressure. Phases were identified and lattice parameters of β' and √ph ases were measured and compared with standards. The results were used to construct β'-SiAION-√-Si3N4 solidsolution tie lines in the two phase region. As expected, the specimens with a higher β'-SiAION content showed higher hardness and lower toughness values.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 287: Symposium K – Silicon Nitride Ceramics–Scientific and Technological Advances , 1992 , 373
Copyright
Copyright © Materials Research Society 1993

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References

REFERENCES

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