Paper Title:
Pressureless Sintering and Properties Investigation of Silicon Nitride
  Abstract

Different grain size of starting powder was choosed and different sintering additives were used to fabricate Si3N4 ceramics by pressureless sintering. Samples’ relative density and mechanical properties including Vickers hardness, bending strength and fracture toughness were tested. Then XRD, SEM and EDS were carried out to identify phase and observe microstructure and fracture morphology. The result shows that high purity α phase Si3N4 powder of 5 μm is suitable for sintering and combination of 5 wt.% MgO +5 wt.% Y2O3 is most effective within six kinds of sintering aids.

  Info
Periodical
Advanced Materials Research (Volumes 194-196)
Edited by
Jianmin Zeng, Taosen Li, Shaojian Ma, Zhengyi Jiang and Daoguo Yang
Pages
1464-1469
DOI
10.4028/www.scientific.net/AMR.194-196.1464
Citation
B. Li, Y. Feng, H. Q. Liu, Y. F. Zhu, D. B. Yu, X. B. Zhang, X. B. Pan, J. Tu, X. P. Ouyang, L. Z. Cao, H. C. Wu, "Pressureless Sintering and Properties Investigation of Silicon Nitride", Advanced Materials Research, Vols. 194-196, pp. 1464-1469, 2011
Online since
February 2011
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Price
$35.00
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