This title appears in the Scientific Report :
2009
Please use the identifier:
http://dx.doi.org/10.1007/s11666-009-9302-9 in citations.
Application of Plasma-Sprayed Complex Perovskites as Thermal Barrier Coatings
Application of Plasma-Sprayed Complex Perovskites as Thermal Barrier Coatings
In an effort to improve the performance of heat engines at high temperatures, advanced surface coatings have been developed from complex perovskites. Materials of Ba(Mg1/3Ta2/3)O-3 and La(Al1/4Mg1/2Ta1/4)O-3 composition were synthesized and applied as ceramic topcoats of thermal barrier coating (TBC...
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Personal Name(s): | Jarligo, M.O. |
---|---|
Mack, D. E. / Vaßen, R. / Stöver, D. | |
Contributing Institute: |
Werkstoffsynthese und Herstellungsverfahren; IEF-1 JARA-ENERGY; JARA-ENERGY |
Published in: | Journal of thermal spray technology, 18 (2009) S. 187 - 193 |
Imprint: |
Boston, Mass.
Springer
2009
|
Physical Description: |
187 - 193 |
DOI: |
10.1007/s11666-009-9302-9 |
Document Type: |
Journal Article |
Research Program: |
Erneuerbare Energien |
Series Title: |
Journal of Thermal Spray Technology
18 |
Subject (ZB): | |
Publikationsportal JuSER |
In an effort to improve the performance of heat engines at high temperatures, advanced surface coatings have been developed from complex perovskites. Materials of Ba(Mg1/3Ta2/3)O-3 and La(Al1/4Mg1/2Ta1/4)O-3 composition were synthesized and applied as ceramic topcoats of thermal barrier coating (TBC) systems by atmospheric plasma spraying (APS) in single layer and in double-layer combination with conventional yttria stabilized zirconia (YSZ). Microstructural and phase analyses reveal that plasma spraying of complex perovskites is accompanied with the formation of vertical crack networks and secondary oxide phases which influence the failure mechanism of the TBCs. The low value of fracture toughness for the complex perovskites and the thermally grown oxide at the topcoat-bondcoat interface of the TBCs are, however, the major factors which lead to the coating failure on thermal cycling at about 1250 A degrees C. |