Kinetics of the α-β Phase Transformation in Seeded Si3N4 Ceramics

被引：21
作者：
Bucevac, D. [1 ]
Boskovic, S. [1 ]
Matovic, B. [1 ]
机构：
[1] Inst Nucl Sci Vinca, Belgrade 11001, Serbia
来源：
SCIENCE OF SINTERING | 2008年 / 40卷 / 03期
关键词：
Seeded Si3N4; Phase Transition; Hot-Pressing;
D O I：
10.2298/SOS0803263B
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The alpha-beta phase transformation in Si3N4 was studied for seeded samples using all Y2O3-Al2O3 mixture as a sintering aid. The concentration of beta-seeds varied from 0 to 5 wt.%. The results showed that alpha-beta phase transformation followed the first-order reaction. The calculated activation energy for seeded samples was in the range from 348 to 3 78 KJ/mol, indicating boundary reaction as the rate limiting step.
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收藏
页码：263 / 270
页数：8
相关论文
共 16 条
  • [1] SINTERING PROCESS OF Y2O3-ADDED SI3N4
    ABE, O
    [J]. JOURNAL OF MATERIALS SCIENCE, 1990, 25 (08) : 3641 - 3648
  • [2] HOT-PRESSING AND ALPHA-BETA PHASE-TRANSFORMATION IN SILICON-NITRIDE
    BOWEN, LJ
    WESTON, RJ
    CARRUTHERS, TG
    BROOK, RJ
    [J]. JOURNAL OF MATERIALS SCIENCE, 1978, 13 (02) : 341 - 350
  • [3] Correlation between fracture toughness and microstructure of seeded silicon nitride ceramics
    Bucevac, D.
    Boskovic, S.
    Matovic, B.
    Zivkovic, Lj.
    Vlajic, M.
    Krstic, Vladimir
    [J]. JOURNAL OF MATERIALS SCIENCE, 2007, 42 (18) : 7920 - 7926
  • [4] Bucevac D, 2004, J MATER SCI TECHNOL, V20, P241
  • [5] Progress in silicon-based non-oxide structural ceramics
    Dressler, W
    Riedel, R
    [J]. INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS, 1997, 15 (1-3) : 13 - 47
  • [6] GAZZARA CP, 1977, AM CERAM SOC BULL, V56, P777
  • [7] Hampshire S., 1983, Progress in Nitrogen Ceramics. Proceedings of the NATO Advanced Study Institute, P225
  • [8] MICROSTRUCTURE CONTROL OF SILICON-NITRIDE BY SEEDING WITH RODLIKE BETA-SILICON NITRIDE PARTICLES
    HIRAO, K
    NAGAOKA, T
    BRITO, ME
    KANZAKI, S
    [J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1994, 77 (07) : 1857 - 1862
  • [9] HWANG CM, 1978, P INT S FACT DENS SI, P1028
  • [10] Variation of sintering parameters at an early stage of densification affecting β-Si3N4-microstructure
    Lehner, W
    Kleebe, HJ
    Ziegler, G
    [J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2006, 26 (1-2) : 201 - 208
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