Additive and Impurity Distributions at Grain Boundaries in Sintered Alumina
- 1 November 1975
- journal article
- Published by Wiley in Journal of the American Ceramic Society
- Vol. 58 (11-12) , 485-489
- https://doi.org/10.1111/j.1151-2916.1975.tb18764.x
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.Keywords
This publication has 8 references indexed in Scilit:
- Plausible Concepts Necessary and Sufficient for Interpretation of Ceramic Grain‐Boundary Phenomena: II, Solute Segregation, Grain‐Boundary Diffusion, and General Discussion*Journal of the American Ceramic Society, 1974
- Study of the role of impurities and additives on ceramic densificationPublished by Office of Scientific and Technical Information (OSTI) ,1973
- Grain‐Boundary Segregation in MgO‐Doped Al2O3Journal of the American Ceramic Society, 1972
- Auger electron spectroscopySurface Science, 1971
- Chemical Analysis of Grain Boundary Impurities in Polycrystalline Ceramic Materials by Spark Source Mass SpectrometryJournal of the American Ceramic Society, 1970
- Role of Solute Segregation at Grain Boundaries During Final–Stage Sintering of AluminaJournal of the American Ceramic Society, 1964
- On the equilibrium segregation at a grain boundaryActa Metallurgica, 1959
- CHEMICAL REACTIONS AT LOW PRESSURES.1Journal of the American Chemical Society, 1915