This title appears in the Scientific Report :
2009
Please use the identifier:
http://dx.doi.org/10.1016/j.jeurceramsoc.2009.03.019 in citations.
Corrosion Behaviour of Chromium-Free Ceramics for Liquid Slag Removal in Pressurized Pulverized Coal Combustion
Corrosion Behaviour of Chromium-Free Ceramics for Liquid Slag Removal in Pressurized Pulverized Coal Combustion
The corrosion behaviour of HfO2, HfSiO4, ZrSiO4, NiAl2O4 and, for comparison, a commercial Cr2O3-containing ceramic was investigated under Pressurized Pulverized Coal Combustion (PPCC) conditions at 1450 degrees C in the presence of liquid slag. Although Cr2O3-containing ceramics show sufficient cor...
Saved in:
Personal Name(s): | Müller, M. |
---|---|
Hilpert, K. / Singheiser, L. | |
Contributing Institute: |
Werkstoffstruktur und Eigenschaften; IEF-2 JARA-ENERGY; JARA-ENERGY |
Published in: | Journal of the European Ceramic Society, 29 (2009) S. 2721 - 2726 |
Imprint: |
Amsterdam [u.a.]
Elsevier Science
2009
|
Physical Description: |
2721 - 2726 |
DOI: |
10.1016/j.jeurceramsoc.2009.03.019 |
Document Type: |
Journal Article |
Research Program: |
Rationelle Energieumwandlung |
Series Title: |
Journal of the European Ceramic Society
29 |
Subject (ZB): | |
Publikationsportal JuSER |
The corrosion behaviour of HfO2, HfSiO4, ZrSiO4, NiAl2O4 and, for comparison, a commercial Cr2O3-containing ceramic was investigated under Pressurized Pulverized Coal Combustion (PPCC) conditions at 1450 degrees C in the presence of liquid slag. Although Cr2O3-containing ceramics show sufficient corrosion resistance, they have the main disadvantage of vaporisation of toxic Cr(VI)-species. Among the investigated chromium-free ceramics, HfO2 and HfSiO4 showed relatively good corrosion resistance in laboratory investigations. The stability of the latter one depends not only on the microstructure of the ceramic but also on the slag composition. Technically produced ceramic balls of HfO2 and ZrSiO4 performed very well in the liquid slag separator of a PPCC test facility. (C) 2009 Elsevier Ltd. All rights reserved. |