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A Diffusion‐Compensation Relation for Normal Grain Growth and Grain‐Boundary Diffusion of Oxygen in Oxides
Author(s) -
Joesten Raymond
Publication year - 1985
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.1151-2916.1985.tb15287.x
Subject(s) - grain boundary diffusion coefficient , effective diffusion coefficient , grain growth , diffusion , grain boundary , materials science , oxygen , grain size , grain boundary strengthening , thermodynamics , mineralogy , analytical chemistry (journal) , metallurgy , chemistry , physics , microstructure , medicine , organic chemistry , chromatography , magnetic resonance imaging , radiology
Values of D 0 /δ and Q for grain‐boundary diffusion, derived from published studies of normal grain growth in Al 2 O 3 , BeO, CaO, MgO, SiO 2 , and CaSiO 3 , are fit by the linear compensation equation log D 0 /δ=0.03170Q ‐7.6792 (r 2 =0.9384). Comparison of grain‐boundary diffusion coefficients derived from grain growth in oxides with those obtained by direct experimental measurement suggests that the kinetics of normal grain growth are controlled by grain‐boundary diffusion of oxygen.