OXYGEN TRACER DIFFUSION IN SINGLE-CRYSTAL ALUMINA

被引:37
作者
CAWLEY, JD
HALLORAN, JW
COOPER, AR
机构
[1] Department of Materials Science and Engineering, Case Western Reserve University, Cleveland, Ohio
关键词
D O I
10.1111/j.1151-2916.1991.tb08264.x
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
Oxygen tracer diffusion coefficients are determined in single-crystal alumina samples with differing dopant levels using the gas-exchange technique. The diffusion direction is parallel to the c-axis and the ambient P(o2) is 1 atm (10(5) Pa) for all experiments except a single run with a low P(o2) almost-equal-to 10(-15) atm (10(-10) Pa) produced by a CO/CO2 mixture. The diffusion is insensitive to both impurities and ambient P(o2). The insensitivities are discussed in terms of point-defect clustering. Prior tracer studies are compared and discussed.
引用
收藏
页码:2086 / 2092
页数:7
相关论文
共 22 条
[11]   SELF-DIFFUSION OF OXYGEN IN SINGLE-CRYSTAL ALUMINA [J].
OISHI, Y ;
ANDO, K ;
KUBOTA, Y .
JOURNAL OF CHEMICAL PHYSICS, 1980, 73 (03) :1410-1412
[12]  
OISHI Y, 1983, J AM CERAM SOC, V66, pC130, DOI 10.1111/j.1151-2916.1983.tb10106.x
[13]  
OISHI Y, 1984, ADV CERAM, V10, P379
[14]  
OISHI Y, 1977, YOGYO KYOKAISHI, V85, P54
[15]  
OISHI Y, 1959, J CHEM PHYS, V33, P480
[16]   OXYGEN DIFFUSION IN SAPPHIRE [J].
REDDY, KPR ;
COOPER, AR .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1982, 65 (12) :634-638
[17]   OXYGEN DIFFUSION IN MAGNESIUM ALUMINATE SPINEL [J].
REDDY, KPR ;
COOPER, AR .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1981, 64 (06) :368-371
[18]   ION-PROBE MEASUREMENT OF OXYGEN SELF-DIFFUSION IN SINGLE-CRYSTAL AL2O3 [J].
REED, DJ ;
WUENSCH, BJ .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1980, 63 (1-2) :88-92
[19]  
REED DJ, 1977, THESIS MIT CAMBRIDGE
[20]   APPLICATION OF A NONDESTRUCTIVE SINGLE-SPECTRUM PROTON ACTIVATION TECHNIQUE TO STUDY OXYGEN DIFFUSION IN ZINC OXIDE [J].
ROBIN, R ;
COOPER, AR ;
HEUER, AH .
JOURNAL OF APPLIED PHYSICS, 1973, 44 (08) :3770-3777