Gas sensing behavior of porous ZnO varistors densified via rate controlled sintering
Conference
·
OSTI ID:462756
- Georgia Inst. of Tech., Atlanta, GA (United States)
A hydrogen gas sensor based on shift in breakdown voltage of a ZnO varistor was developed. Changes in rate controlled sintering schedules resulted in significant variations in microstructure. Microstructures showing more intergranular porosity and finer grain size demonstrated a comparatively more linear and broad response to H{sub 2} concentration. A mechanism for the shift in breakdown voltage based on adsorbed oxygen is suggested for this unique and potentially very useful sensor.
- OSTI ID:
- 462756
- Report Number(s):
- CONF-960401--; ISBN 1-55899-334-7
- Country of Publication:
- United States
- Language:
- English
Similar Records
Sintering behavior of doped ZnO powders for high field varistors
Development of functional microstructure during sintering of a ZnO varistor material
High-field ZnO varistors: microstructures and properties
Technical Report
·
Wed Aug 01 00:00:00 EDT 1990
·
OSTI ID:6455598
Development of functional microstructure during sintering of a ZnO varistor material
Journal Article
·
Thu Dec 31 23:00:00 EST 1992
· Journal of the American Ceramic Society; (United States)
·
OSTI ID:6270583
High-field ZnO varistors: microstructures and properties
Technical Report
·
Sat Jun 01 00:00:00 EDT 1985
·
OSTI ID:5271309