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Tailoring Microstructure and Architecture to Build Ceramic Components with Unpre...

Tailoring Microstructure and Architecture to Build Ceramic Components with Unprecedented Damage Tolerance Advanced ceramics are often combined with metals, polymers or other ceramics to produce structural and functional systems with exceptional properties. Examples are resistors and capacitors in microelectronics, piezo-ceramic actuat... ver más

31/10/2024

Montanuniversitaet...

2M€

Presupuesto del proyecto: 2M€

Líder del proyecto

MONTANUNIVERSITAET LEOBEN No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

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Financiación concedida El organismo H2020 notifico la concesión del proyecto el día 2024-10-31

ERC-2018-COG: ERC Consolidator Grant

I+D

Cerrada hace 6 años

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2 Participantes

Montanuniversitaet Leoben

1.99M€ | Lider

TECNOLOGIA MAQUINARIA E INNO...

360.12K€ | Participante

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Duración del proyecto: 69 meses Fecha Inicio: 2019-01-15
Fecha Fin: 2024-10-31

Líder del proyecto

MONTANUNIVERSITAET LEOBEN No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Presupuesto del proyecto 2M€

Descripción del proyecto Advanced ceramics are often combined with metals, polymers or other ceramics to produce structural and functional systems with exceptional properties. Examples are resistors and capacitors in microelectronics, piezo-ceramic actuators in car injection devices, and bio-implants for hip joint replacements. However, a critical issue affecting the functionality, lifetime and reliability of such systems is the initiation and uncontrolled propagation of cracks in the brittle ceramic parts, yielding in some cases rejection rates up to 70% of components production. The remarkable damage tolerance found in natural materials such as wood, bone or mollusc, has yet to be achieved in technical ceramics, where incipient damage is synonymous with catastrophic failure. Novel multilayer designs combining microstructure and architecture could change this situation. Recent work of the PI has shown that tuning the location of protective layers within a 3D multilayer ceramic can increase its fracture resistance by five times (from ~3.5 to ~17 MPa∙m1/2) relative to constituent bulk ceramic layers, while retaining high strength (~500 MPa). By orienting the grain structure, similar to the textured and organized microstructure found in natural systems such as nacre, the PI has shown that crack propagation can be controlled within the textured ceramic layer. Thus, I believe tailored microstructures with controlled grain boundaries engineered in a layer-by-layer 3D architectural design hold the key to a new generation of damage tolerant ceramics. This proposal outlines a research program to establish new scientific principles for the fabrication of innovative ceramic components that exhibit unprecedented damage tolerance. The successful implementation of microstructural features (e.g. texture degree, tailored internal stresses, second phases, interfaces) in a layer-by-layer architecture will provide outstanding lifetime and reliability in both structural and functional ceramic devices.

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