TY  - JOUR
AU  - Cao, X. Q.
AU  - Vaßen, R.
AU  - Jungen, W.
AU  - Schwartz, S.
AU  - Tietz, F.
AU  - Stöver, D.
TI  - Thermal stability of lanthanum zirconate plasma-sprayed coating
JO  - Journal of the American Ceramic Society
VL  - 84
SN  - 0002-7820
CY  - Oxford [u.a.]
PB  - Wiley-Blackwell
M1  - PreJuSER-57124
SP  - 2086 - 2090
PY  - 2001
N1  - Record converted from VDB: 12.11.2012
AB  - 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.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000170962600026
UR  - https://juser.fz-juelich.de/record/57124
ER  -