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Grain Boundary Diffusion of Oxygen in Alumina Ceramics
Author(s) -
Sakaguchi Isao,
Srikanth Varanasi,
Ikegami Takayasu,
Haneda Hajime
Publication year - 1995
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1995.tb08703.x
Subject(s) - grain boundary diffusion coefficient , grain boundary , materials science , doping , diffusion , ceramic , effective diffusion coefficient , analytical chemistry (journal) , oxygen , resistive touchscreen , mineralogy , metallurgy , chemistry , thermodynamics , microstructure , optoelectronics , electrical engineering , medicine , physics , organic chemistry , radiology , chromatography , magnetic resonance imaging , engineering
The volume and grain boundary diffusion coefficients (D v and δD gb ) of oxygen at 1673 K in pure and Mg‐doped alumina were studied by using a resistive anode encoder of SIMS. The effect of Mg‐doping on D v , was observed clearly. The differences on δD gb in pure and Mg‐doped alumina were about 3 orders and 1 order of magnitude, respectively. The Mg‐doping in alumina is useful for homogenizing grain boundary diffusion.