Preparation, Microstructure and Properties of Ternary Al2O3/YAG/ZrO2 Ceramics Hot Pressed with Eutectic Composition Powders

被引：0
作者：
Ouyang Jiahu [1 ]
Yu Tiangang [1 ]
Ma Yonghui [1 ]
Wang Zhigang [1 ]
Abdelkhalek, Henniche [1 ]
Liu Zhanguo [1 ]
Wang Yujin [1 ]
Zhou Yu [1 ]
机构：
[1] Harbin Inst Technol, Harbin 150001, Peoples R China
来源：
RARE METAL MATERIALS AND ENGINEERING | 2018年 / 47卷
关键词：
Al2O3/ZrO2/YAG ceramic; phase transition; intragranular microstructure; mechanical properties; STRENGTH; GROWTH;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Al2O3/YAG/ZrO2 powders with eutectic composition have been synthesized by the chemical co-precipitation in alcohol-water aqueous solution and calcination method, and were characterized by X-ray diffraction, scanning electron microscopy and transmission electron microscopy. The precursors were calcined at temperatures of 600 similar to 1350 degrees C in air, and the phase transition process was then revealed with increasing the calcination temperature. Al2O3/YAG/ZrO2 powders calcined at 1300 degrees C for 1 h consist of alpha-Al2O3, YAG and c-ZrO2 phases. Al2O3/YAG/ZrO2 ceramics with eutectic composition were hot-pressed at 1550 degrees C with the above-mentioned powders. The Al2O3/YAG/ZrO2 ceramic sintered at 1550 degrees C contains an intragranular microstructure, and exhibits a relative density of 98.8%, a room-temperature flexural strength of 420 MPa, a fracture toughness of 3.69 MPa.m(1/2) and a high-temperature (1000 degrees C) flexural strength of 464 MPa. The formation mechanism of an intragranular microstructure in the Al2O3/YAG/ZrO2 ceramic has been proposed.
引用
收藏
页码：288 / 293
页数：6
相关论文
共 14 条
  • [1] Laser heated pedestal growth of Al2O3/GdAlO3 eutectic fibers
    Andreeta, ERM
    Andreeta, MRB
    Hernandes, AC
    [J]. JOURNAL OF CRYSTAL GROWTH, 2002, 234 (04) : 782 - 785
  • [2] Al2O3-Y3Al5O12(YAG)-ZrO2 ternary composite rapidly solidified from the eutectic melt
    Calderon-Moreno, JM
    Yoshimura, M
    [J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2005, 25 (08) : 1365 - 1368
  • [3] Eutectic Al2O3-GdAlO3 composite consolidated by combined rapid quenching and spark plasma sintering technique
    Han, YH
    Nagata, M
    Uekawa, N
    Kakegawa, K
    [J]. BRITISH CERAMIC TRANSACTIONS, 2004, 103 (05): : 219 - 222
  • [4] Undercooled melt formation by melting of metastable eutectic structure in Al2O3-Y2O3-ZrO2 system
    Mizutani, Y
    Yasuda, H
    Ohnaka, I
    Sugiyama, A
    Takeshima, S
    Kirihara, M
    Waku, Y
    [J]. MATERIALS TRANSACTIONS, 2002, 43 (11) : 2847 - 2854
  • [5] Thermal emission properties of Al2O3/Er3Al5O12 eutectic ceramics
    Nakagawa, N
    Ohtsubo, H
    Waku, Y
    Yugami, H
    [J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2005, 25 (08) : 1285 - 1291
  • [6] Sintering, microstructure and mechanical properties of Al2O3-Y2O3-ZrO2 (AYZ) eutectic composition ceramic microcomposites
    Oelgardt, C.
    Anderson, J.
    Heinrich, J. G.
    Messing, G. L.
    [J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2010, 30 (03) : 649 - 656
  • [7] Ultra-high-strength nanofibrillar Al2O3-YAG-YSZ eutectics
    Oliete, Patricia B.
    Pena, Jose I.
    Larrea, Angel
    Orera, Victor M.
    LLorca, Javier
    Pastor, Jose Y.
    Martin, Antonia
    Segurado, Javier
    [J]. ADVANCED MATERIALS, 2007, 19 (17) : 2313 - +
  • [8] Piezospectroscopic study of residual stresses in Al2O3-ZrO2 directionally solidified eutectics
    Pardo, JA
    Merino, RI
    Orera, VM
    Peña, JI
    González, C
    Pastor, JY
    Llorca, J
    [J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2000, 83 (11) : 2745 - 2752
  • [9] Effect of the microstructure on the mechanical properties of a directionally solidified Y3Al5O12/Al2O3 eutectic fiber
    Park, DY
    Yang, JM
    [J]. JOURNAL OF MATERIALS SCIENCE, 2001, 36 (23) : 5593 - 5601
  • [10] ORIENTED EUTECTIC MICROSTRUCTURES IN SYSTEM AL203/ZR02
    SCHMID, F
    VIECHNICKI, D
    [J]. JOURNAL OF MATERIALS SCIENCE, 1970, 5 (06) : 470 - +
12