Hydrochloric Acid Corrosion Behavior of Nb2O5-Al2O3 Ceramics Prepared by Microwave Sintering
| Periodical | Advanced Materials Research (Volumes 418 - 420) |
|---|---|
| Main Theme | Materials Processing Technology |
| Edited by | Xianghua Liu, Zhengyi Jiang and Jingtao Han |
| Pages | 55-58 |
| DOI | 10.4028/www.scientific.net/AMR.418-420.55 |
| Citation | Yun Long Ai et al., 2011, Advanced Materials Research, 418-420, 55 |
| Online since | December, 2011 |
| Authors | Yun Long Ai, Fei He, Bing Liang Liang, Wen He, Li Liu |
| Keywords | Al2O3, Microwave Sintering, Nb2O5, SKP |
| Price | US$ 28,- |
The influences of Nb2O5 on the phase, microstructure and hydrochloric acid corrosion behaviors of Nb2O5-Al2O3 ceramics sintered with 2.45 GHz microwave energy were investigated. The results showed that Nb2O5 reacted completely with Al2O3 to form AlNbO4 and densified the pure Al2O3 at a lower sintering temperature and in a short sintering time. Nb2O5-Al2O3 ceramic samples were corroded in diverse concentration hydrochloric acid for different time. Weight loss rate of Nb2O5-Al2O3 ceramic rose dramatically when the corrosion time was not longer than 4 h, and it increased slowly beyond 24 h. After Nb2O5-Al2O3 ceramic samples were corroded for 1 h, pitting corrosion was observed by scanning electric microscope, which was consistent with the analysis results of the scanning Kelvin Probe.