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Synthesis of in situ reinforced silicon nitride composites

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2004
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Authors
Vučković, Aleksandra
Bošković, Snežana B.
Zivkovic, L
Article
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Abstract
The objective of this work was to investigate the effect of two different sintering additives (CeO2 and Y2O3 + Al2O3), sintering time and amount of beta-Si3N4 seeds on the densification. mechanical properties and microstructure of self-reinforced Si3N4 based composites obtained by pressureless sintering. Preparation of beta-Si3N4 seeds, also obtained by a pressureless sintering procedure. is described. Samples without seeds were prepared for comparison. The results imply that self-reinforced silicon nitride based composites with densities close to the theoretical values and with fracture toughness of 9.3 MPa m(1/2) can be obtained using a presureless sintering procedure.
Keywords:
beta-Si3N4 seeds / additive / pressureless sintering / self-reinforced composites / densification / fracture toughness
Source:
Journal of the Serbian Chemical Society, 2004, 69, 1, 59-67

DOI: 10.2298/JSC0401059V

ISSN: 0352-5139

WoS: 000188757900008

Scopus: 2-s2.0-1442351121
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http://vinar.vin.bg.ac.rs/handle/123456789/2707
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