where his activities concentrated on weldable Ti alloys and advanced Al alloys. 1982 he joined DLR's Institute of Materials Research in KΓΆln, where he worked as group leader on AlΒ±Li alloys and high temperature titanium alloys. 1988 he became section head ΒͺLight Metals and CoatingsΒΊ. Presently he is
Design and Properties of Thermal Barrier Coatings for advanced turbine engines
β 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.
β¦ 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 (EBβPVD). While PS is lower in cost EBβPVD 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.
π SIMILAR VOLUMES
Thermal Barrier Coatings (TBCs) are used extensively to protect components of gas turbines or diesel engines against deterioration at high temperatures, oxidation and corrosion attack by reactive species, especially sulfurs. A TBC can be manufactured by implementing atmospheric plasma spraying (APS)
The improvement of the adherence of thermal barrier coatings on a copper material as used in rocket combustion chambers by introducing an additional Al or Ti reaction layer and by realizing an optimum surface roughness is presented. Boundary layer reactions of Al and Ti with the copper substrate hav