Abstract
Thick films of Au-loaded WO3 mixed with glass frit were prepared on an alumina substrate by the printing method, and influences of film thickness, Au-loading and operating temperature on the NH3 sensing characteristics were investigated. With an increase in film thickness and Au-loading, the maximum sensitivity (Km) increased, while the temperature for maximum sensitivity (Tm) decreased. An optimum film was revealed to be the 4.0 mass % Au-loaded one of a 250 μm-thickness for the optimum operating temperature of 450°C. The sensor proved excellent NH3 sensing characteristics in gas sensitivity, response transient, resistance to humidity and long-term stability when subjected to heat cleaning once a day during its operation.
| Original language | English |
|---|---|
| Pages (from-to) | 1112-1116 |
| Number of pages | 5 |
| Journal | Journal of the Ceramic Society of Japan |
| Volume | 104 |
| Issue number | 12 |
| Publication status | Published - 1996 Jan 1 |
Fingerprint
Keywords
- Ammonia
- Au
- Gas sensor
- Thick film
- Tungsten trioxide
ASJC Scopus subject areas
- Ceramics and Composites
- Chemistry(all)
- Condensed Matter Physics
- Materials Chemistry
Cite this
Ando, M., Tsuchida, T., Suto, S., Suzuki, T., Nakayama, C., Miura, N., & Yamazoe, N. (1996). Ammonia gas sensor using thick film of Au-loaded tungsten trioxide. Journal of the Ceramic Society of Japan, 104(12), 1112-1116.