Paper Title:
Hot Pressing of Y2O3 Doped Si3N4 Ceramics
  Abstract

The effect of seeding on the microstructure and mechanical properties of hot-pressed silicon nitride was investigated by introducing large, elongated b-Si3N4 particles into an α-Si3N4 matrix. Densification and fracture toughness were followed in the presence of Y2O3 as sintering aid. The concentration of seeds varied from 0 to 5 wt%. The maximum fracture toughness was 8.0 MPam1/2 for a material with 3 wt% seeds, hot pressed at 1750oC, for 4h.

  Info
Periodical
Edited by
Dragan P. Uskokovic, Slobodan K. Milonjic, Djan I. Rakovic
Pages
423-428
DOI
10.4028/www.scientific.net/MSF.494.423
Citation
D. Bučevac, "Hot Pressing of Y2O3 Doped Si3N4 Ceramics", Materials Science Forum, Vol. 494, pp. 423-428, 2005
Online since
September 2005
Authors
Keywords
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: A. Vučković, B. Matović, Snezana Bošković
Abstract:This paper deals with densification and a®b phase transformation of Si3N4, with a constant b-Si3N4 seeds concentration regarding sintering...
429
Authors: Ling Bai, Chang Chun Ge, Wei Ping Shen, Ke Zhang, X.D. Mao
Abstract:The densification and phase transformation of high α-phase silicon nitride powder synthesized by SHS with a combination of Y2O3 and Al2O3...
577
Authors: Ahmet Atasoy, Ahmet Ersoy
Abstract:In this study, two different starting compositions were prepared according to two cation values, and then the mixture was compacted...
902
Authors: Yong Feng Li, Ping Liu, Guan Jun Qiao, Jian Feng Yang, Hai Yun Jin, Xiang Dong Wang
Abstract:With commercial α-Si3N4 and h-BN powders as starting materials, La2O3, Al2O3, Y2O3 as sintering additives, Si3N4/BN composite ceramics with...
761
Authors: Qi Long Guo, Jun Guo Li, Qiang Shen, Lian Meng Zhang
Chapter 2: Engineering Ceramics and Ceramic Composites
Abstract:The sinterability of ZrB2-20vol.% SiC ceramics by high-energy ball milling as well as introduction of Zr and Al as sintering...
723