This title appears in the Scientific Report :
2002
Thermal stability of lanthanum zirconate plasma-sprayed coating
Thermal stability of lanthanum zirconate plasma-sprayed coating
Lanthanum zirconate (La2Zr2O7, LZ) is a newly proposed material for thermal barrier coatings (TBCs). The thermal stability of LZ coating was studied in this work by long-term annealing and thermal cycling. After long-term annealing at 1400 degreesC or thermal cycling, both LZ powder and plasma-spray...
Saved in:
Personal Name(s): | Cao, X. Q. |
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Vaßen, R. / Jungen, W. / Schwartz, S. / Tietz, F. / Stöver, D. | |
Contributing Institute: |
Werkstoffsynthese und Herstellungsverfahren; IWV-1 |
Published in: | Journal of the American Ceramic Society, 84 (2001) S. 2086 - 2090 |
Imprint: |
Oxford [u.a.]
Wiley-Blackwell
2001
|
Physical Description: |
2086 - 2090 |
Document Type: |
Journal Article |
Research Program: |
Werkstoff- und Bauteilentwicklung für fortschrittliche Kraftwerke |
Series Title: |
Journal of the American Ceramic Society
84 |
Subject (ZB): | |
Publikationsportal JuSER |
Lanthanum zirconate (La2Zr2O7, LZ) is a newly proposed material for thermal barrier coatings (TBCs). The thermal stability of LZ coating was studied in this work by long-term annealing and thermal cycling. After long-term annealing at 1400 degreesC or thermal cycling, both LZ powder and plasma-sprayed coating still kept the pyrochlore structure, and a preferred crystal growth direction in the coating was observed by X-ray diffraction. A considerable amount of La2O3 in the powder was evaporated in the plasma flame, resulting in a nonstoichiometric coating. Additionally, compared with the standard TBC material yttria-stabilized zirconia (YSZ), LZ coating has a lower thermal expansion coefficient, which leads to higher stress levels in a TBC system. |