Effect of High-Temperature Aging on the Fracture Toughness of 40 mol% Ceria-Stabilized Zirconia

被引：16
作者：
Jiang, Kuo [1 ]
Liu, Songbai [1 ]
Xi, Wenjun [2 ]
机构：
[1] Southwest Univ Sci & Technol, Dept Def Sci & Technol, Mianyang 621010, Peoples R China
[2] Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China
来源：
JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2015年 / 98卷 / 01期
关键词：
THERMAL-BARRIER COATINGS; PHASE-STABILITY; MECHANICAL-PROPERTIES; PARTIAL SUBSTITUTION; CONDUCTIVITY; CERAMICS; ENGINE; ZRO2; MICROSTRUCTURE; INDENTATION;
D O I：
10.1111/jace.13308
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 40mol% CeO2-stabilized ZrO2 ceramic was synthesized by the sol-spray pyrolysis method and aged at 1400 degrees C-1600 degrees C. The effects of high-temperature aging on its fracture toughness were investigated after heat treatments at 1500 degrees C for 6-150h in air. Characterization results indicated that the activation energy for grain growth of 40mol% CeO2-stabilized ZrO2 was 593 +/- 47kJ/mol. The average grain size of this ceramic varied from 1.4 to 5.6m within the aging condition of 1500 degrees C for 6-150h. The Ce-lean tetragonal phase has a constant tetragonality (ratio of the c-axis to a-axis of the crystal lattice) of 1.0178 during the aging process. It was found that the fracture toughness of 40mol% CeO2-stabilized ZrO2 was determined to be 2.0 +/- 0.1MPa.m(1/2), which did not vary significantly with prolonging aging time. Since no monoclinic zirconia was detected in the regions around the indentation crack-middle and crack-tip, the high fracture toughness maintained after high-temperature aging can be attributed to the remarkable stability of the tetragonal phase in 40mol% CeO2-stabilized ZrO2 composition.
引用
收藏
页码：331 / 337
页数：7
相关论文
共 41 条
  • [1] A CRITICAL-EVALUATION OF INDENTATION TECHNIQUES FOR MEASURING FRACTURE-TOUGHNESS .1. DIRECT CRACK MEASUREMENTS
    ANSTIS, GR
    CHANTIKUL, P
    LAWN, BR
    MARSHALL, DB
    [J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1981, 64 (09) : 533 - 538
  • [2] Ceramic materials for thermal barrier coatings
    Cao, XQ
    Vassen, R
    Stoever, D
    [J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2004, 24 (01) : 1 - 10
  • [3] Thermal-barrier coatings for more efficient gas-turbine engines
    Clarke, David R.
    Oechsner, Matthias
    Padture, Nitin P.
    [J]. MRS BULLETIN, 2012, 37 (10) : 891 - 902
  • [4] Materials design for the next generation thermal barrier coatings
    Clarke, DR
    Levi, CG
    [J]. ANNUAL REVIEW OF MATERIALS RESEARCH, 2003, 33 : 383 - 417
  • [5] FRACTURE TOUGHNESS DETERMINATIONS BY INDENTATION
    EVANS, AG
    CHARLES, EA
    [J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1976, 59 (7-8) : 371 - 372
  • [6] Effect of powder coating on stabilizer distribution in CeO2-stabilized ZrO2 ceramics
    Fang, PA
    Gu, H
    Wang, PL
    [J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2005, 88 (07) : 1929 - 1934
  • [7] Thermal conductivity of ytterbia-stabilized zirconia
    Feng, Jing
    Ren, Xiaorui
    Wang, Xiaoyan
    Zhou, Rong
    Pan, Wei
    [J]. SCRIPTA MATERIALIA, 2012, 66 (01) : 41 - 44
  • [8] Huang SG, 2004, J MATER SCI TECHNOL, V20, P75
  • [9] Thermophysical Properties and Sintering of Ytterbia-Stabilized Tetragonal Zirconia Ceramic
    Jiang, Kuo
    Liu, Songbai
    [J]. ADVANCED ENGINEERING MATERIALS, 2015, 17 (01) : 21 - 27
  • [10] Effects of RE 3+Ionic Radius on Monoclinic Phase Content of 8 mol% REO1.5 Partially Stabilized ZrO2 ( RE = Yb, Y, Gd, and Nd) Powder Compacts after Annealing at High Temperature
    Jiang, Kuo
    Liu, Songbai
    Li, Yuan
    Li, Yaofei
    [J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2014, 97 (03) : 990 - 995
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