Cation grain-boundary diffusivity in SiO2- and MgO-doped Al2O3

Lin Feng; Shen J. Dillon

doi:10.1111/jace.15104

Cation grain-boundary diffusivity in SiO₂- and MgO-doped Al₂O₃

Lin Feng, Shen J. Dillon

Research output: Contribution to journal › Article › peer-review

Abstract

Cation grain-boundary diffusion in undoped and aliovalent-doped Al₂O₃ is characterized using Cr₂O₃ as a chemical tracer. The compositional depth profiles measured by secondary ion mass spectrometry are fitted to the Whipple-LeClaire model. The results indicate that cation grain-boundary diffusivity is insensitive to MgO and SiO₂ dopants between 1100°C and 1300°C.

Original language	English (US)
Pages (from-to)	5379-5384
Number of pages	6
Journal	Journal of the American Ceramic Society
Volume	100
Issue number	12
DOIs	https://doi.org/10.1111/jace.15104
State	Published - Dec 2017

Keywords

alumina
diffusion/diffusivity
dopants/doping
grain boundaries

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

Online availability

10.1111/jace.15104

Library availability

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Cite this

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abstract = "Cation grain-boundary diffusion in undoped and aliovalent-doped Al2O3 is characterized using Cr2O3 as a chemical tracer. The compositional depth profiles measured by secondary ion mass spectrometry are fitted to the Whipple-LeClaire model. The results indicate that cation grain-boundary diffusivity is insensitive to MgO and SiO2 dopants between 1100°C and 1300°C.",

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