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Content archived on 2024-04-16

Improvement of the reliability of heat engine components under service conditions using finite element modelling of ceramic thermal barrier coatings

Objective


During the course of the MODELCOAT project the knowledge of the correlation between spraying parameters and the quality and duration of the coated components has been improved in three main areas:
- identification of important spraying parameters
- identification of failure mechanisms
- identification (via numerical analysis) and assessment (via testing) of possible route for improvements of coating life-times

The detail comprehension of the influences of the relevant process parameters (such as substrate temperature, deposition temperature gradients, oxidation level, etc.) does indicate ways to advance coatings quality and properties. The impact of such indications have been tested for diesel engine applications. The aim of the project has thus in the main being reached.
The modelling of thermal barrier coating microstructure, mechanical and thermal properties and behaviour under service conditions will be developed and used to design coatings for heat engine applications with improved high temperature and durability. This approach will provide a new tool in addition to empirical optimization and will overcome its limitations such as high cost and difficulty in interpreting complex deposition-microstructure-property relationships.

The overall programme consists of five major tasks:
-production, characterization and testing of state-of-the-art coatings
-model development
-assessment of model predictions
-improvement of TBC's performance based on the global model for reciprocating engine and gas turbine components
-assessment of project results.

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Topic(s)

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Call for proposal

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Funding Scheme

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Coordinator

Università degli Studi di Trento
EU contribution
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Address
Via Mesiano 77
38050 Trento
Italy

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Total cost

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Participants (4)

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