Grain boundary segregation in titanium dioxide: Evaluation of relative driving forces for segregation

被引：0
|
作者：
Wang, QL [1 ]
Lian, GD [1 ]
Dickey, EC [1 ]
机构：
[1] Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA
来源：
STRUCTURE-PROPERTY RELATIONSHIPS OF OXIDE SURFACES AND INTERFACES II | 2003年 / 751卷
关键词：
D O I：
暂无
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Solute segregation to grain boundaries is a fundamental phenomenon in polycrystalline metal-oxide electroceramics that has enormous implications for the macroscopic dielectric behavior of the materials. This paper presents a systematic study of solute segregation in a model dielectric, titanium dioxide. We investigate the relative role of the electrostatic versus strain energy driving forces for segregation by studying yttrium-doped specimens. Through analytical transmission electron microscopy studies, we quantitatively determine the segregation behavior of the material. The measured Gibbsian interfacial excesses are compared to thermodynamic predictions.
引用
收藏
页码：179 / 190
页数：12
相关论文
共 50 条
  • [1] Grain boundary blocking and segregation effects in yttrium-doped polycrystalline titanium dioxide
    Wang, Qinglei
    Varghese, Oomman K.
    Grimes, Craig A.
    Dickey, Elizabeth C.
    [J]. SOLID STATE IONICS, 2007, 178 (3-4) : 187 - 194
  • [2] GRAIN BOUNDARY SEGREGATION
    INMAN, MC
    TIPLER, HR
    [J]. ACTA METALLURGICA, 1959, 7 (03): : 221 - 222
  • [3] Grain boundary segregation and grain boundary wetting
    Vilenkin, A
    [J]. DIFFUSION, SEGREGATION AND STRESSES IN MATERIALS, 2003, 216-2 : 189 - 195
  • [4] SURFACE SEGREGATION AS A GUIDE TO GRAIN-BOUNDARY SEGREGATION
    LEA, C
    SEAH, MP
    [J]. SCRIPTA METALLURGICA, 1975, 9 (06): : 583 - 586
  • [5] Segregation driving forces in perovskite titanates
    Horvath, G
    Gerblinger, J
    Meixner, H
    Giber, J
    [J]. SENSORS AND ACTUATORS B-CHEMICAL, 1996, 32 (02) : 93 - 99
  • [6] Grain boundary segregation and fracture
    Faulkner, RG
    [J]. ZEITSCHRIFT FUR METALLKUNDE, 2005, 96 (10): : 1213 - 1218
  • [7] EQUILIBRIUM GRAIN BOUNDARY SEGREGATION
    BITLER, WR
    [J]. SCRIPTA METALLURGICA, 1971, 5 (12): : 1045 - &
  • [8] Grain boundary segregation in metals
    Rao, PR
    [J]. CURRENT SCIENCE, 1997, 73 (07): : 580 - 592
  • [9] GRAIN-BOUNDARY SEGREGATION
    SEAH, MP
    [J]. JOURNAL OF PHYSICS F-METAL PHYSICS, 1980, 10 (06): : 1043 - 1064
  • [10] ON THE EQUILIBRIUM SEGREGATION AT A GRAIN BOUNDARY
    CAHN, JW
    HILLIARD, JE
    [J]. ACTA METALLURGICA, 1959, 7 (03): : 219 - 221
12345