Fabrication of dense bulk nano-Si 3N 4 ceramics without secondary crystalline phase

A two-step sintering approach was developed to enhance densification with minimum grain growth for bulk nano-Si 3N 4 ceramics. Addition of Y 2O 3 changes the primary phase field, giving rise to β-Si 3N 4 with nano-scale grain size and near full density without Si 2N 2O phase.

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Bibliographic Details
Published inScripta materialia Vol. 54; no. 4; pp. 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 Journal Article
LanguageEnglish
Published Elsevier Ltd 2006
Subjects
Bulk nano-silicon nitride
Densification
Grain growth
Two-step sintering
Densification
Two-step sintering
Grain growth
Bulk nano-silicon nitride
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Summary:A two-step sintering approach was developed to enhance densification with minimum grain growth for bulk nano-Si 3N 4 ceramics. Addition of Y 2O 3 changes the primary phase field, giving rise to β-Si 3N 4 with nano-scale grain size and near full density without Si 2N 2O phase.
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2005.10.032