Interaction of Alkali Metal and Halide Vapors with Ceramic Materials
- 1 July 1981
- journal article
- research article
- Published by Taylor & Francis in Journal of the Illuminating Engineering Society
- Vol. 10 (4) , 194-203
- https://doi.org/10.1080/00994480.1980.10748611
Abstract
The effect of minor constituents in alumina arc tubes on lamp performance has been investigated. It is found that arc tubes containing calcia are less resistant to sodium vapor and accelerate early failures. Microstructural studies reveal extensive formation of β—alumina phases and sodium penetration across the wall of the reacted alumina. A number of other interactions, including calcia-doped MgAl2O4 spinel have been studied. Mechanisms of sodium migration in terms of structural defects and chemical constitution of the grain boundary are presented and discussed.Keywords
This publication has 13 references indexed in Scilit:
- The cause of lamp voltage increase of high pressure sodium lampJournal of Light & Visual Environment, 1979
- Observation of Potassium βm‐Alumina in Sintered AluminaJournal of the American Ceramic Society, 1977
- Fabrication of translucent magnesium aluminate spinel and its compatibility in sodium vapourJournal of Materials Science, 1976
- Grain‐Boundary Segregation in MgO‐Doped Al2O3Journal of the American Ceramic Society, 1976
- Compatibility of Ceramics with Liquid Na and LiJournal of the American Ceramic Society, 1976
- Phases in the System NaAlO2‐Al2O3Journal of the American Ceramic Society, 1975
- Additive and Impurity Distributions at Grain Boundaries in Sintered AluminaJournal of the American Ceramic Society, 1975
- Grain Boundary Segregation in Al2O3Journal of the American Ceramic Society, 1974
- Translucent Sintered MgAl2O4Journal of the American Ceramic Society, 1974
- Study of a Beta-Alumina Electrolyte for Sodium-Sulfur BatteryJournal of the Electrochemical Society, 1973