Fabrication of dense bulk nano-Si3N4 ceramics without secondary crystalline phase

A two-step sintering approach was developed to enhance densification with minimum grain growth for bulk nano-Si3N4 ceramics. Addition of Y2P3 changes the primary phase field, giving rise to beta-Si3N4 with nano-scale grain size and near full density without Si2N2O phase.

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Bibliographic Details
Published in:Scripta materialia 2006-02, Vol.54 (4), p.615-619
Main Authors: KIM, Hai-Doo, PARK, Young-Jo, HAN, Byung-Dong, PARK, Min-Who, BAE, Won-Tae, KIM, Young-Wook, LIN, Hua-Tay, BECHER, Paul F
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Metals. Metallurgy
Powder metallurgy. Composite materials
Production techniques
Sintered metals and alloys. Pseudo alloys. Cermets
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Description
Summary:A two-step sintering approach was developed to enhance densification with minimum grain growth for bulk nano-Si3N4 ceramics. Addition of Y2P3 changes the primary phase field, giving rise to beta-Si3N4 with nano-scale grain size and near full density without Si2N2O phase.
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2005.10.032