White paper in materials engineering with environmental impact

LIGHTWEIGHT CERAMIC INTERMETALLIC MATRIX COMPOSITES FOR HIGH TEMPERATURE APPLICATIONS

Proposal for funding through the Fifth Framework organized by the European Union.


Duration: 3 years

Submission deadline: June 15, 1999

Principle Investigators:

W. A. Goddard III (Caltech, USA), N. P. O'Dowd (Imperial College, UK), F. Muecklich (Universitaet Saarlandes, Germany), J. M. Georges (Ecole Centrale de Lyon, France), C. Weber (Universitaet Saarlandes, Germany), M. Hoffmann (Universitaet Karlsruhe, Germany), M. Anglada (Universitat Politecnica de Catalunya, Spain), R. Hongming (Zoz GmbH, Germany), B. Clayton (Teer Coatings, UK), K-H. Thiemann (DaimlerChrysler, Germany), G. Boretto (Fiat, Italy)

EU Project Coordinator: E. Pifarre Montaner (Univ. Politec. Catalunya, EU)

USA Project Coordinator: M. Blanco (Caltech, USA)

Last Modified: June 9, 1999


News

PLEASE SEND YOUR TASKS AND A3 - A4 FORMS TO THE COORDINATOR AS SOON AS POSSIBLE

NEXT FRIDAY 11, FROM 8 a.m. TO 1 p.m. WE WILL DISCUSS THE TASKS AND THE BUDGET OF THE DIFFERENT CONSORTIA PARTNERS

IT IS OUR LAST EFFORT, SO PLEASE TRY TO SEND YOUR CONTRIBUTION AS SOON AS POSSIBLE.

THE COORDINATOR APPRECIATES YOUR EFFORT

Thank you, E. Pifarre

Project organization: Budget AND Workpackages-milestones-planning


Executive Summary

Overview and State of the art

Turbine or car engines performance, increases respectively with the temperature of the working fluid and with the weight reduction. The new light materials challenges must center their efforts on new compounds strong, and stiff at high temperatures, and with some ductility at both elevated and ambient temperature. Oxidation and corrosion resistance is also highly required.

In the last decade significant materials engineering efforts have been targeting advanced light ceramics and in paralel intermetallic light materials. The major difficulties found for the advanced ceramics such as Si3N4 were the fracture toughness and the high processing costs (related to its toughness)[3]. On the other hand intermetallics such as Ni3Al or TiAl, at high temperature are affected by the diffusion of defects producing a dramatic softening and material failure[4].

Good high-temperature mechanical properties might be expected using a compromise of both materials. The formation of low melting intermetallics originates from a liquid - phase and consequently enhances the densification of the Si3N4 intermetallic composite. At elevated temperature most intermetallic compounds would act as ductile phases, improving the Si3N4 fracture toughness (better resistance to fracture), and reducing considerably the elaboration costs.

We propose study lightweight ceramic - intermetallic matrix composite matetials for high temperature applications.

In addition to 7 research organisations/universities the consortium will consist of 1 material producers, 1 manufacturer and 2 large industrial conglomerates as end-users. The multi-sectorial industrial participation will ensure a very fast explotation of the results for different high temperature industrial components.

Coordination

E. Pifarre Montaner (European Coordination)

Materials Engineering Department-Prof. M. Anglada Group
Universitat Politecnica de Catalunya
Avenida Diagonal 647
E-08028 Barcelona, Spain
FAX: 34 93 401 67 06
email:enrique@wag.caltech.edu or FP5Coordination@cmem.upc.es>

M. Blanco (US Coordination)

Materials & Process Simulation Center
Beckman Institute (179-74)
Pasadena, CA 91125 USA
email:mario@wag.caltech.edu