"Additive and Impurity Distributions at Grain Boundaries in Sintered Al" by W. C. JOHNSON and D. F. STEIN
 

Additive and Impurity Distributions at Grain Boundaries in Sintered Alumina

Document Type

Article

Publication Date

1-1-1975

Abstract

Additive and impurity distributions at grain boundaries in sintered Al2O3 were determined using a scanning Auger microprobe, transmission electron microscopy, metallography, and electron probe analysis. The results indicated that Ca was present uniformly at the boundaries as a segregant, whereas the Mg or Ni levels observed resulted from nonequilibrium spinel particles. The Ca concentrations were consistent with equilibrium segregation theory and followed an equilibrium segregation isotherm. Copyright © 1975, Wiley Blackwell. All rights reserved

Publication Title

Journal of the American Ceramic Society

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