MICROSTRUCTURE OF PRESSURELESS-SINTERED AL2O3-24 VOL-PERCENT ZRO2 COMPOSITE STUDIED BY HIGH-RESOLUTION ELECTRON-MICROSCOPY

被引：17
|
作者：
LEE, BT
HIRAGA, K
SHINDO, D
NISHIYAMA, A
机构：
[1] TOHOKU UNIV,INST ADV MAT PROC,SENDAI,MIYAGI 980,JAPAN
[2] MITSUBISHI MAT CO,CENT RES INST,SAITAMA 330,JAPAN
来源：
JOURNAL OF MATERIALS SCIENCE | 1994年 / 29卷 / 04期
关键词：
D O I：
10.1007/BF00351417
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The microstructure of an Al2O3-24 vol % ZrO2 composite prepared by pressureless-sintering was investigated by high-resolution electron microscopy. The composite was formed of homogeneously dispersed ZrO2 and Al2O3 grains with average sizes of 0.3 and 0.5 mum, respectively. Most ZrO2 grains had a monoclinic structure, but a few ZrO2 embedded in Al2O3 grains were a tetragonal structure. At interfaces between ZrO2 with a lamella-type twin structure and Al2O3, microcracks were observed, in addition to strain fields in the Al2O3 matrix. Complex twin structures accompanied by dislocations were observed in ZrO2 with a spherical shape. In in situ observations with electron-beam heating, it was found that a crack propagated along an Al2O3/ZrO2 interface and stopped at the place where a tetragonal ZrO2 had undergone a structural change to monoclinic ZrO2.
引用
收藏
页码：959 / 964
页数：6
相关论文
共 50 条
  • [31] YBA2CU3O7-DELTA FILMS ON SI WITH Y-STABILIZED ZRO2 AND Y2O3 BUFFER LAYERS - HIGH-RESOLUTION ELECTRON-MICROSCOPY OF THE INTERFACES
    BARDAL, A
    ZWERGER, M
    EIBL, O
    WECKER, J
    MATTHEE, T
    APPLIED PHYSICS LETTERS, 1992, 61 (10) : 1243 - 1245
  • [32] HIGH-RESOLUTION TRANSMISSION ELECTRON-MICROSCOPY OF INTERPHASE INTERFACES IN NIO-ZRO2(CAO)
    DRAVID, VP
    LYMAN, CE
    NOTIS, MR
    REVCOLEVSCHI, A
    ULTRAMICROSCOPY, 1989, 29 (1-4) : 60 - 70
  • [33] THE INFLUENCE OF SINTERING TECHNIQUE ON MICROSTRUCTURE AND PROPERTIES OF ZrO2/Al2O3 COMPOSITE
    Wojteczko, Agnieszka
    Wojteczko, Kamil
    Strzelecka, Marta
    Nam, Tatyana
    Jach, Katarzyna
    Rosinski, Marcin
    Bucko, Miroslaw M.
    Pedzich, Zbigniew
    COMPOSITES THEORY AND PRACTICE, 2019, 19 (04): : 157 - 160
  • [34] Microstructure control of Al2O3/ZrO2 composite by fibrous monolithic process
    Kim, TS
    Kim, KH
    Goto, T
    Lee, BT
    MATERIALS TRANSACTIONS, 2004, 45 (02) : 431 - 434
  • [35] Quasi in situ sequential sulfidation of CoMo/Al2O3 studied using high-resolution electron microscopy
    Kooyman, PJ
    Buglass, JG
    Reinhoudt, HR
    van Langeveld, AD
    Hensen, EJM
    Zandbergen, HW
    Veen, JAR
    JOURNAL OF PHYSICAL CHEMISTRY B, 2002, 106 (45): : 11795 - 11799
  • [36] Extruded and Pressureless-Sintered Al2O3-SiCw Composite Rods: Fabrication, Structure, Electrical Behavior, and Elastic Modulus
    Bertram, Brian D.
    Gerhardt, Rosario A.
    Schultz, John W.
    JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2011, 94 (12) : 4391 - 4398
  • [37] A HIGH-RESOLUTION ELECTRON-MICROSCOPY STUDY OF MGO/AL2O3 INTERFACES AND MGAL2O4 SPINEL FORMATION
    LI, DX
    PIROUZ, P
    HEUER, AH
    YADAVALLI, S
    FLYNN, CP
    PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES, 1992, 65 (02): : 403 - 425
  • [38] HIGH-RESOLUTION ELECTRON-MICROSCOPY STUDY OF SR2NDNBCU2O8
    ZANDBERGEN, HW
    CAVA, RJ
    KRAJEWSKI, JJ
    PECK, WF
    JOURNAL OF SOLID STATE CHEMISTRY, 1992, 101 (02) : 322 - 330
  • [39] DEGRADATION OF THE HIGH-TC SUPERCONDUCTOR YBA2CU3O7-Y STUDIED BY HIGH-RESOLUTION ELECTRON-MICROSCOPY
    NAGAKURA, S
    HIROTSU, Y
    SASAKI, J
    MIYAGAWA, K
    NAKAMURA, Y
    BRITO, ME
    ULTRAMICROSCOPY, 1991, 39 (1-4) : 254 - 267
  • [40] STRUCTURAL STUDIES BY ELECTRON-MICROSCOPY - HIGH-RESOLUTION OBSERVATIONS ON BETA-ZRO2 12NB2O5
    ALLPRESS, JG
    IIJIMA, S
    ROTH, RS
    STEPHENSON, NC
    JOURNAL OF SOLID STATE CHEMISTRY, 1973, 7 (01) : 89 - 93
12345