The efficiency of thermal processes increases with the available temperature interval. The temperature range of the metallic superalloys used today is limited by their maximum operating temperature. In order for ceramics to be used in thermomechanically highly stressed areas, such as in gas turbines, the naturally brittle ceramics must be reinforced with ceramic fibres resistant to high temperatures. The fibres are embedded in a ceramic matrix. If fibres and matrix consist of oxide ceramics, this is called O-CMC (Oxide Ceramic Matrix Composites). Until now, O-CMCs have had an open-pored matrix. Their maximum application temperature is limited to approx. 1100 °C.
The aim of the project is to develop an O-CMC that can be used at significantly higher temperatures up to approx. 1250 °C. In addition, a demonstrator component made of this novel material is to be developed: a stator for micro gas turbines. The open-pored matrix of the O-CMC is to be replaced by a dense oxide ceramic matrix. In addition, fibre coatings are to be developed to bond the fibres to the matrix. It is to be shown that the efficiency of micro gas turbines can be significantly increased with the new material.
|Project Duration||01.07.2019 - 30.06.2022
|Sponsor||Federal Ministry of Education and Research
|Funding Amount||485,000 Euro|
|Project Partners||Fraunhofer-Centre HTL
Paul Rauschert GmbH & Co. KG
|Project Coordination||BMBF call for proposals "High-performance materials for efficient and environmentally friendly drive systems" (HoMAS)|
|Project management at the HTL||Arne Rüdinger|