TY  - JOUR
AU  - Schlegel, N.
AU  - Sebold, D.
AU  - Sohn, Y. J.
AU  - Mauer, G.
AU  - Vassen, Robert
TI  - Cycling Performance of a Columnar-Structured Complex Perovskite in a Temperature Gradient Test
JO  - Journal of thermal spray technology
VL  - 24
IS  - 7
SN  - 1544-1016
CY  - Boston, Mass.
PB  - Springer
M1  - FZJ-2015-06188
SP  - 1205 - 1212
PY  - 2015
AB  - To increase the efficiency of turbines for the power generation and the aircraft industry, advanced thermal barrier coatings (TBCs) are required. They need to be long-term stable at temperatures higher than 1200 °C. Nowadays, yttria partially stabilized zirconia (YSZ) is applied as standard TBC material. But its long-term application at temperatures higher than 1200 °C leads to detrimental phase changes and sintering effects. Therefore, new materials have to be investigated, for example, complex perovskites. They provide high melting points, high thermal expansion coefficients and thermal conductivities of approx. 2.0 W/(m K). In this work, the complex perovskite La(Al1/4Mg1/2Ta1/4)O3 (LAMT) was investigated. It was deposited by the suspension plasma spraying (SPS) process, resulting in a columnar microstructure of the coating. The coatings were tested in thermal cycling gradient tests and they show excellent results, even though some phase decomposition was found.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000363038600009
DO  - DOI:10.1007/s11666-015-0254-y
UR  - https://juser.fz-juelich.de/record/256204
ER  -