𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Design and Properties of Thermal Barrier Coatings for advanced turbine engines

✍ Scribed by Dr. M. Peters; Dr. K. Fritscher; Dr. G. Staniek; Dr. W. A. Kaysser; Dr. U. Schulz


Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
712 KB
Volume
28
Category
Article
ISSN
0933-5137

No coin nor oath required. For personal study only.

✦ Synopsis


Abstract

The efficiency and performance of advanced aircraft turbines can be markedly increased if higher gas temperatures are used. Although the highly loaded blades and vanes in the high pressure turbine are heavily cooled, today's substrate materials are unable to provide sufficient strength in the temperature range up to 1500Β°C and above. If thermal barrier coatings (TBCs) are applied on superalloy turbine blades a substantial temperature drop of the parts can be achieved. The resulting increase in efficiency comes from reduced cooling and/or increased gas turbine inlet temperatures of up to 150Β°C. TBCs are either processed by plasma spraying (PS) or electron beam physical vapour deposition (EB‐PVD). While PS is lower in cost EB‐PVD leads to superior strain and thermoshock tolerant coatings. Furthermore, cooling hole closure of turbine blades and vanes is prevented and aerodynamic design maintained. Finally, future research and development needs in TBC technology are stressed.


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