applications for power stations and airplanes have to meet increasingly high demands on system efficiency. The materials used must be absolutely safe and reliable under extreme thermal and mechanical loads. The BAM Federal Institute for Materials Research and Testing carries out research to achieve this objective.
Turbine blades made from titanium aluminides
BAM's investigations now cover turbine blade materials made from an intermetallic titanium aluminide alloy (TiAl). Such alloys have very high tensile strength and a reasonable toughness at high temperatures, light weight, extraordinary corrosion resistance, and the ability to withstand extreme temperatures. Previously, turbine blades were made from nickel alloys with a relatively high specific weight. Aeroplane engines have to maintain their full strength at very high operating temperatures and TiAl alloys materials fulfil this requirement.
BAM is investigating the material properties of new TiAl turbine blade alloys in a research project sponsored by the German Research Foundation (DFG). The materials are exposed to a combination of thermal load and mechanical load. The material behaviour must be characterized under complex loads so that the design engineers can develope components using computer models. The objective of the project is to enable engines to use titanium alloy TiAl turbine blades safely and reliably in practice.
Coating of turbine materials for power stations
Electric power stations equipped with gas turbines are operated at high gas temperatures. Heavy-duty turbine blades are cooled from the inside and are coated with a thermal protection system on the outside.
Supported by the DFG, BAM examines and develops alumina coatings for oxidation and hot corrosion protection of nickel-based alloys. The objective is to develop efficient coating processes in order to supplement existing thermal protection systems or open up new applications.
BAM will present the results at MSE Materials Science and Engineering Congress and Exhibition, which will take place in Nuremberg between 1 and 4 September 2008 (www.mse-congress.de).Contact: Turbine blades from titanium aluminide
Dr. Ulrike Rockland | idw
A materials scientist’s dream come true
21.08.2018 | Friedrich-Alexander-Universität Erlangen-Nürnberg
Novel sensors could enable smarter textiles
17.08.2018 | University of Delaware
There are currently great hopes for solid-state batteries. They contain no liquid parts that could leak or catch fire. For this reason, they do not require cooling and are considered to be much safer, more reliable, and longer lasting than traditional lithium-ion batteries. Jülich scientists have now introduced a new concept that allows currents up to ten times greater during charging and discharging than previously described in the literature. The improvement was achieved by a “clever” choice of materials with a focus on consistently good compatibility. All components were made from phosphate compounds, which are well matched both chemically and mechanically.
The low current is considered one of the biggest hurdles in the development of solid-state batteries. It is the reason why the batteries take a relatively long...
New design tool automatically creates nanostructure 3D-print templates for user-given colors
Scientists present work at prestigious SIGGRAPH conference
Most of the objects we see are colored by pigments, but using pigments has disadvantages: such colors can fade, industrial pigments are often toxic, and...
Scientists at the University of California, Los Angeles present new research on a curious cosmic phenomenon known as "whistlers" -- very low frequency packets...
Scientists develop first tool to use machine learning methods to compute flow around interactively designable 3D objects. Tool will be presented at this year’s prestigious SIGGRAPH conference.
When engineers or designers want to test the aerodynamic properties of the newly designed shape of a car, airplane, or other object, they would normally model...
Researchers from TU Graz and their industry partners have unveiled a world first: the prototype of a robot-controlled, high-speed combined charging system (CCS) for electric vehicles that enables series charging of cars in various parking positions.
Global demand for electric vehicles is forecast to rise sharply: by 2025, the number of new vehicle registrations is expected to reach 25 million per year....
17.08.2018 | Event News
08.08.2018 | Event News
27.07.2018 | Event News
21.08.2018 | Power and Electrical Engineering
21.08.2018 | Life Sciences
21.08.2018 | Medical Engineering