Densification and polymorphic transition of multiphase Y2O3 nanoparticles during spark plasma sintering

被引：14
作者：
Marder, R. [1 ]
Chaim, R. [1 ]
Chevallier, G. [2 ]
Estournes, C. [2 ]
机构：
[1] Technion Israel Inst Technol, Dept Mat Engn, IL-32000 Haifa, Israel
[2] Inst Carnot Cirimat, CNRS, F-31602 Toulouse 9, France
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2011年 / 528卷 / 24期
关键词：
Spark plasma sintering; Phase transformation; Densification; Y2O3; PARTICLE REARRANGEMENT; NANOCRYSTALLINE Y2O3; PHASE-TRANSITIONS; CERAMICS; POWDER;
D O I：
10.1016/j.msea.2011.06.044
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Multiphase (MP) monoclinic and cubic Y2O3 nanoparticles, 40 nm in diameter, were densified by spark plasma sintering for 5-15 min and100 MPa at 1000 degrees C, 1100 degrees C, and 1500 degrees C. Densification started with pressure increase at room temperature. Densification stagnated during heating compared to the high shrinkage rate in cubic single-phase reference nanopowder. The limited densification of the MP nanopowder originated from the vermicular structure (skeleton) formed during the heating. Interface controlled monoclinic to cubic polymorphic transformation above 980 degrees C led to the formation of large spherical cubic grains within the vermicular matrix. This resulted in the loss of the nanocrystalline character and low final density. (C) 2011 Elsevier By. All rights reserved.
引用
收藏
页码：7200 / 7206
页数：7
相关论文
共 25 条
  • [1] Fundamental investigations on the spark plasma sintering/synthesis process III. Current effect on reactivity
    Anselmi-Tamburini, U
    Garay, JE
    Munir, ZA
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2005, 407 (1-2): : 24 - 30
  • [2] ARTZT E, 1983, METALLURGICAL T A, V14, P211
  • [3] Cubic or monoclinic Y2O3:Eu3+ nanoparticles by one step flame spray pyrolysis
    Camenzind, A
    Strobel, R
    Pratsinis, SE
    [J]. CHEMICAL PHYSICS LETTERS, 2005, 415 (4-6) : 193 - 197
  • [4] Densification maps for spark plasma sintering of nanocrystalline MgO ceramics
    Chaim, R
    Margulis, M
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2005, 407 (1-2): : 180 - 187
  • [5] Densification of nanocrystalline Y2O3 ceramic powder by spark plasma sintering
    Chaim, Rachman
    Shlayer, Amit
    Estournes, Claude
    [J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2009, 29 (01) : 91 - 98
  • [6] Low-temperature spark plasma sintering of NiO nanoparticles
    Chaim, Rachman
    Reshef, Ram
    Liu, Guanghua
    Shen, Zhijian
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2011, 528 (06): : 2936 - 2940
  • [7] Phase transitions in nanocrystalline barium titanate ceramics prepared by spark plasma sintering
    Deng, XY
    Wang, XH
    Wen, H
    Kang, AG
    Gui, ZL
    Li, LT
    [J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2006, 89 (03) : 1059 - 1064
  • [8] ALPHA-ALUMINA FORMATION IN ALUM-DERIVED GAMMA-ALUMINA
    DYNYS, FW
    HALLORAN, JW
    [J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1982, 65 (09) : 442 - 448
  • [9] The formation of cubic and monoclinic Y2O3 nanoparticles in a gas-phase flame process
    Guo, B.
    Harvey, A.
    Risbud, S. H.
    Kennedy, I. M.
    [J]. PHILOSOPHICAL MAGAZINE LETTERS, 2006, 86 (07) : 457 - 467
  • [10] Pressure-Induced Structural Phase Transitions in Y2O3 Sesquioxide
    Halevy, I.
    Carmon, R.
    Winterrose, M. L.
    Yeheskel, O.
    Tiferet, E.
    Ghose, S.
    [J]. INTERNATIONAL CONFERENCE ON HIGH PRESSURE SCIENCE AND TECHNOLOGY, JOINT AIRAPT-22 AND HPCJ-50, 2010, 215
123