1 / 7

Acceptable limits of degradation of TBC for high-efficient turbines Department Materials (ALSTOM)

Acceptable limits of degradation of TBC for high-efficient turbines Department Materials (ALSTOM) Lab of Crystallography (ETH Z ürich) CTI project Nr. 7820.3 EPRP-IW Project start Nov. 1. 2005 Project duration 24 months. Main issues

darby
Download Presentation

Acceptable limits of degradation of TBC for high-efficient turbines Department Materials (ALSTOM)

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Acceptable limits of degradation of TBC for high-efficient turbines Department Materials (ALSTOM) Lab of Crystallography (ETH Zürich) CTI project Nr. 7820.3 EPRP-IW Project start Nov. 1. 2005 Project duration 24 months

  2. Main issues • Formation of monoclinic phase determines TBC degradation • TBC phase composition depends on: (1) properties of feedstock • (e.g. Y-content), (2) APS parameters of rapid solidification, • (3) annealing scheme, (4) operation conditions • - All factors (1), (2), (3), and (4) are Alstom-specific • Condition matrix of Alstom-specific (1), (2), (3), (4) vs. YSZ • coatings properties has to be constructed. Key parametres • Tetragonalmonoclinic as possible mechanism of stress release • - Microstructure evolution and YSZ phase composition change • Formalism for modeling of TBC aging, TC modeling, TTT diagram

  3. Milestones after month 9 and month 15

  4. Milestones after month 9 and month 15

  5. Basic experimental studies * Embedding and polishing ** We have also other options

  6. Thermal conductivity measurements (=cp)

  7. Discussion • Communication • Controlling: Microsoft project • Sample preparation • Neutron scattering (SANS) to quantify porosity and openings • TC measurements: free-standing or coating on substrates

More Related